Best Practices for Solid
Waste Management:
A Guide for Decision-Makers in
Developing Countries
August 2020
EPA 530-R-20-002
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Best Practices for Solid Waste Management:
A Guide for Decision-Makers in Developing Countries
United States Environmental Protection Agency
Office of Resource Conservation and Recovery
August
2020
Notice: Mention of trade names, products, resources, or services does not convey, and should not
be interpreted as conveying, official EPA approval, endorsement, or recommendation. Unless
otherwise indicated, photos included in this document were obtained by EPA and its contractors,
or stock photo aggregators.
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Contents
i
Contents
Case Study List iii
Case-in-Point List iv
Key Point Box List v
Acronyms and Abbreviations vi
Acknowledgments vii
1. Introduction 1
1.1. Sections of the Guide 4
1.2. Key Features of the Guide 5
2. Understanding the Need for Solid Waste Management 7
2.1. Why Is Solid Waste Management Important? 9
2.2. Common Challenges 10
3. Approaches 15
3.1. Why Is a Hierarchy of Solid Waste Management Approaches Important? 17
3.2. Elements of the Solid Waste Management Hierarchy 17
4. Stakeholder Engagement 19
4.1. Why Involve Stakeholders? 21
4.2. Best Practices 22
5. Planning Systems 29
5.1. Why Is Planning Important for Solid Waste Management Systems? 31
5.2. Key Steps in Planning 31
6. Economic Considerations 35
6.1. Solid Waste Management Costs 37
6.2. Internal Funding 38
6.3. External Financing 39
6.4. Contracting with the Private Sector 42
6.5. Extended Producer Responsibility 42
7. Waste Characterization 47
7.1. Why Is Waste Characterization Important? 49
7.2. Best Practices 50
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Contents
8. Prevention and Minimization 59
8.1. What is Waste Prevention and Minimization? 61
8.2. Why is Waste Prevention and Minimization Important? 61
8.3. Incorporating Prevention and Minimization into Solid Waste Management 62
9. Separation, Collection, and Transportation 65
9.1. Why Is Collection Important? 67
9.2. Challenges 68
9.3. Best Practices 68
9.4. Marine Litter 77
10. Organic Waste Management 81
10.1. What is Organic Waste? 83
10.2. Why Focus on Organic Waste? 83
10.3. Treatment Options 84
10.4. Best Practices 86
11. Recycling 93
11.1. What Is Recycling? 95
11.2. Challenges 96
11.3. Best Practices 98
11.4. Informal Sector Recycling 103
12. Dumpsite Management 107
12.1. Why Focus on Open Dumpsites? 109
12.2. Best Practices 111
13. Sanitary Landfills 115
13.1. What Are Sanitary Landfills? 117
13.2. Best Practices 118
14. Energy Recovery 127
14.1. Why Consider Energy Recovery? 129
14.2. Types of Energy Recovery 129
14.3. Challenges 130
14.4. When to Consider WtE 131
15. Bibliography 133
Appendix A - Summary of Key Resources 147
Appendix B - Region-Specific Resources for Solid Waste Management 151
Appendix C - Public Engagement/Communications Tools 152
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Contents
Case Study List
Exhibit Number
Title Page Number
4.3
Stakeholder Engagement in Battambang, Cambodia
26
4.4
The Role of Partnerships in Solid Waste Management in Cebu City,
Philippines
27
5.1
Disaster Waste Planning in Nepal
34
6.2
Public Private Partnerships in the West Bank and Gaza
45
7.2
Waste Characterization in Naucalpan, Mexico
54
8.1
Food Waste Prevention in Hong Kong
63
9.7
Santos, Brazil's Door-to-Door Separate Collection Scheme
Z9
10.5
Separating and Recycling Organic Waste in La Pintana, Chile
91
11.2
Using Waste Banks to Process Recyclables in Indonesia
101
11.3
Independent Waste Recyclers in Ho Chi Minh City, Vietnam
102
11.5
Incorporating the Informal Sector in Solid Waste Management
Activities in Bangalore, India
106
12.2
Dumpsite Rehabilitation in East Delhi, India
114
13.4
Developing a Roadmap for Transitioning to a Sanitary Engineered
Landfill in San Cristobal, Dominican Republic
125
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Contents
Case in Point List
Incorporating Solid Waste Management in Primary School Lessons in Cambodia
24
Establishing Variable Collection Fees Tied to Socioeconomic Status
Extended Producer Responsibility in South Africa
Drain Blockage
61
Communal Collection in Addis Ababa, Ethiopia
Santa Juana, Chile's Source Separate Collection
Sao Paulo, Brazil's Organic Waste Management Strategy
87
Tunisia's Recycling Program
97
Incorporating the Informal Sector in Solid Waste Management Activities in Dakar, Senegal
105
Generating Electricity from Landfill Gas in Sao Paulo, Brazil
121
Brazil's National Solid Waste Policy
Kampala, Uganda's Waste Characterization Study
Door-to-Door Collection inTrichy, India
69
Public Private Partnerships in China
130
Closing Open Dumpsites in Oman
7 72
Climate Bonds for Solid Waste Management
39
Electric Collection Vehicles in Rio de Janeiro, Brazil
Sample Feasibility Studies
India's Solid Waste Management Rules
Composting in Dhaka, Bangladesh
89
Title
Engaging with the Informal Sector in Peru
Page Number
Engaging with the Informal Sector in Peru
Incorporating Solid Waste Management in Primary SchoolLessons in Cambodia 24
Sample Feasibility Studies
Establishing Variable Collection Fees Tied to Socioeconomic Status 36
Climate Bonds for Solid Waste Management
Extended Producer Responsibility in South Africa43
Kampala, Uganda's Waste Characterization Study
Drain Blockage6Z
Door-to-Door Collection in Trichy, India69
Communal Collection in Addis Ababa, Ethiopia70
Electric Collection Vehicles in Rio de Janeiro, Brazil
Santa Juana, Chile's Source Separate Collection84
India's Solid Waste Management Rules
Sao Paulo, Brazil's Organic Waste Management Strategy87
Composting in Dhaka, Bangladesh89
Tunisia's Recycling Program97
Brazil's National Solid Waste Policy99
Incorporating the Informal Sector in Solid Waste Management Activities in Dakar, Senegal
Closing Open Dumpsites in Oman
Generating Electricity from Landfill Gas in Sao Paulo, Brazil
Public Private Partnerships in China
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Contents
v
Key Point Box List
List
Page Number
Marine Litter and the Environment
9
Cities Can Leverage Centers of Excellence to Build Capacity
11
The Five Ps for Solid Waste Management
32
Types of Private Sector Arrangements
42
Risks Associated with Oversizing Waste Treatment Facilities
53
Challenges in Implementing Waste Prevention and Minimization Policies
62
Collection Coverage versus Collection Efficiency
68
Open Dumpsites, Controlled Dumpsites, and Sanitary Landfills
109
Closing Dumpsites Campaign
113
Handling Special Wastes
118
Factors to Consider When Determining Landfill Cost
119
Key Steps in Collecting and Treating Leachate
1 22
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Contents
vi
Acronyms and Abbreviations
AD
Anaerobic Digestion
CBI
Climate Bonds Initiative
CCAC
Climate and Clean Air Coalition
CEC
Commission for Environmental Cooperation
EPR
Extended Producer Responsibility
e-waste
Electronic Waste
GMI
Global Methane Initiative
Guide
Best Practices for Solid Waste Management: A Guide for Decision-Makers in Developing Countries
ISWA
International Solid Waste Association
JSC-H&B
Joint Services Council for Hebron and Bethlehem
LFG
Landfill Gas
MRF
Material Recovery Facility
NGO
Nongovernmental Organization
PET
Polyethylene Terephthalate
PETCO
PET Recycling Company NPC
PPP
Public-Private Partnership
QR
Quick Response
S.M.A.R.T.
Specific, Measurable, Attainable, Relevant, and Timely
UNEP
United Nations Environment Programme
U.S. EPA
United States Environmental Protection Agency
WtE
Waste-to-Energy
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Contents
vii
Acknowledgements
The United States Environmental Protection Agency's (U.S. EPA's) Office of Resource Conservation and
Recovery developed the Best Practices for Solid Waste Management: A Guide for Decision-Makers in
Developing Countries (Guide) based on U.S. EPA's long history of supporting solid waste management
practices and policies that protect human health and the environment.
U.S. EPA received content development, graphical, editorial, and production support from Abt Associates
under contract EP-W-10-054, with considerable support from independent consultant Nimmi Damodaran.
The following individuals and organizations supported the development of the Guide:
International Organizations
United Nations Environment Programme
International Environmental Technology Centre (Keith
Alverson)
German Environment Agency (Anja Schwetje)
United Nations Environment Programme (Sandra
Mazo-Nix)
International Solid Waste Association (Aditi Ramola)
C40 Cities (Ricardo Cepeda)
The World Bank (Silpa Kaza)
Swedish Environmental Protection Agency (Asa
Bergerus Rensvik)
The Energy and Resources Institute (Sourabh Manuja)
Brazilian Association of Sanitation & Special Waste
Companies (Gabriela Otero)
Center for Clean Air Policy (Gerardo Canales)
Center for Circular Economy and Climate Change
(Goran Vujic)
Institute for Global Environmental Strategies
(Premakumara Jagath Dickella Gamaralalage)
George Mason University (KuoTian)
U.S. EPA
Krystal Krejcik
Lia Yohannes
Brandon Bray
Chris Cariseullo
Swarupa Ganguli
Tom Frankiewicz
Stephanie Adrian
Andrew Horan
Janice Sims
Al Korgi
Laura McMillan
Pam Swingle
Chris Newman
Paul Reusch
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1 INTRODUCTION
I*- %ytl v
iCfK L
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1
Introduction
3
Section 1
Introduction
Solid waste management is a local issue with global
implications. As the world's population continues to
grow, so does the amount of waste being produced.
In 2015, the world generated 2 billion metric tons
of solid waste. This number is expected to grow
to 3.4 billion metric tons by 2050. In low-income
countries, the amount of waste is expected to
increase by more than three times by 2050 (Kaza
et al. 2018). As waste generation increases, so does
the importance of having an effective solid waste
management system in place. However, cities and
local governments face many challenges when it
comes to properly managing their solid waste. As
a result, it is estimated that at least 2 billion people
live in areas that lack waste collection and rely on
uncontrolled dumpsites (UNEP and ISWA 2015).
Inadequate solid waste management systems present
serious risks to human health, the environment, and
livelihoods in many cities.
The Best Practices for Solid Waste Management:
A Guide for Decision-Makers in Developing
Countries (Guide) is focused on best practices for
solid waste management in medium and large urban
centers in developing countries (generally referred to
as "cities" in the Guide), because they face the most
substantial solid waste management challenges.
Given their waste generation projections, these
challenges will only become more acute in the future
and decision-makers have the opportunity to take
important and effective action. Portions of the Guide
might also be applicable to rural towns, villages,
or other small jurisdictions. The Guide's primary
audience is state and local government authorities
in these cities.These authorities typically include
decision-makers, policymakers, and agency staff
involved in solid waste management. Aspects of the
Guide might be applicable to other stakeholders such
as nongovernmental organizations, private sector
actors, or residents.
The Guide is not intended to be a step-by-step
implementation manual, but it does highlight
many such manuals and other resources that local
authorities and decision-makers can refer to for more
detailed technical guidance. Approaches that may
be successful in one city or region may not function
everywhere, so the Guide presents decision-makers
with the information and resources to improve solid
waste management within the context of their given
situation.The following page summarizes the Guide's
sections.
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1
Introduction
4
Sections of the Guide
e
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urn
m
9
Understanding the need for solid waste
management. Section 2 describes
the benefits of improved solid waste
management and identifies several primary
challenges that developing countries face
when dealing with solid waste.
Approaches. Section 3 introduces the solid
waste management hierarchy and explains
its rationale.
Stakeholder engagement. Section 4
describes best practices for identifying and
engaging with stakeholders to support
effective solid waste management systems.
Planning systems. Section 5 introduces key
concepts associated with planning effective
solid waste management systems.
Economic considerations. Section 6
describes several ways in which cities can
pay for solid waste management programs
and projects, including using internal
revenue sources and accessing external
financing.
Waste characterization. Section 7 includes
information on what categories to consider,
what information to collect, and how to
ensure data quality.
Prevention and minimization. Section 8
includes strategies for reducing waste from
diverse sources.
Separation, collection, and
transportation. Section 9 includes
information on primary (e.g., from
households) and secondary collection
using transfer stations (also called waste
collection centers; these are decentralized
facilities where waste is sorted and
transferred).
0
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Organic waste management. Section
10 includes information on the types of
treatment (e.g., composting and anaerobic
digestion) and policies and programs to
support diversion strategies.
Recycling. Section 11 includes descriptions
of types of recyclable materials, strategies
for promoting recycling, and infrastructure
and policy considerations.
Dumpsite management. Section 12
includes approaches to upgrade from open
to controlled dumpsites and ultimately
close dumpsites.
Sanitary landfills. Section 13 includes
approaches and keys aspects of planning,
designing, operating, and closing sanitary
landfills. It also addresses landfill gas energy
recovery and use, a key aspect of sanitary
landfills.
Energy recovery. Section 14 profiles
information on waste combustion and
energy generation.
Bibliography
Appendix A - Summary of Key Resources
Appendix B - Region-Specific Resources for
Solid Waste Management
AppendixC- Public Engagement/
Communications Tools
You can use the home icon to access this
"Sections of the Guide" page at any time.
You can also use the back icon to return to
your most recently viewed page.
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1
Introduction
5
Key Features of the Guide
Q|^r=i
0
Case Studies
Case studies provide more
detailed descriptions of
projects or activities from
cities worldwide
Stakeholder Engagement
EXHIBIT 4.3 CASE STUDY _(Q
Stakeholder Engagement in Battambang, Cambodia
In 2011, the City of Battambang. Cambodia, launched an effort to overhaul its solid waste management system.
The city, which is home to more than 150,000 people;, was facing several common solid waste management
challenges, including an insufficient operating budget low collection coverage, waste burning, and associated
environmental and public health concerns. Battambang partnered with NGOs, the Cambodian Education and
Waste Management Organizatioa and the Institute for Global Environmental Strategies to scope their solid waste
management challenges, engage multiple stakeholder groups, and design strategies for effective solid waste
management
Battambang engaged a variety of stakeholder groups as a part of this process, including:
Local government staff took part in a city-to-city information exchange with Phitsanulok. Thailand. This exchange
helped local government staff form a preliminary strategy for solid waste management with the benefit of the
experiences and hindsight of their Thai counterparts.
NGOs, particularly the Cambodian Education and Waste Management Organization, assisted in facilitating the
process and supporting the local government
Private sector waste collectors ONTO and Leap Lim were critical partners in the engagement effort since
Battambang does not operate any collection services itself. For reasonable foes the city committed to better
collection services. ONTO also owns and operates the city's dumpsite.
Commercial waste generators, including several markets, agreed to participate in an organic waste segregation
pilot project with the Cambodian Education and Waste Management Organisation and CINTRI.
Residential waste generators were engaged through the installation
of new waste bins and signage, the distribution of brochures, voice
announcements, community workshops, and a pilot project Reasonable
fees linked to improved collection services were intended to reduce
te burning. The pilot project identified a need for more education and
outreach on waste segregation.
Informal recycling workers operated at the local dumpsite in unsafe
conditions, including waste fires. Workers participated in a voluntary
training session on the health and environmental impacts of waste fires,
and how to extinguish them. Additionally, several informal recycling
workers are now employed at the organic waste separation facility.
O 3©
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DRAFT. DO NOT CITE, QUOTE, OR DISTRIBUTE
Case in Point
Case in point boxes
provide brief examples
from cities across the
world
Stakeholder Engagement
waste management activities encourages the use
of collection services and participation in recycling
and organic waste diversion programs. Engaging
with local and national policy makers can lead to
adoption of solid waste management regulations and
increased funding for programs [CCAC Undated(c)J.
Traditional awareness-raising programs can indude
media campaigns, door-to-door visits to discuss solid
waste management activities with stakeholders,
and community dean up events. Competitions
among neighborhoods and communities can help
raise awareness for solid waste management and
encourage behavior change. Education campaigns
can be integrated into school and university
curriculums to reach the youth population and
encourage good waste management practices.
Appendix C includes a variety of public engagement
and communication tools.
Questions for Decision-Makers
What are the key issues or areas of
interest for the project?
Who are the key stakeholder groups?
• What might be their level of interest?
Who are the key contacts for the groups?
• What are the best mechanisms for
engaging with these groups?
• Are there gr oups that would oppose, or
might be affected by, changes to solid
waste management?
How will stakeholders be engaged
throughout the life of the project?
Best Practices
O
DRAFT. DO NOT CITE. QUOTE. OR DISTRIBUTE
Best practices highlight solid
waste management options
and benefits
mP
Questions
• Questions for
decision-makers to
consider when evaluating
options for improving
solid waste management
09®®®99®0®9©©©0
Including solid waste management in school curriculums 6 an important
way to raise awareness with the youth population. The Institute for Global
Environment Strategies and the United Nations Environment Programme
developed a series of lesson plans for primary school teachers in Cambodia
looking to add environmental education and waste management to their
curriculum. Students can take lessons about waste reduction, source
separation, recycling, and composting; and apply them in their own homes.
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1
Introduction
Solid Waste Management (UNEP 2005a)
Ahead (U.S. EPA 70091
What a Waste 2.0: A Global Snapshot of Solid
Global Waste Management Outlook (UNEP and
ISWA20IS)
Understanding the Need for Solid Waste
Management
Solid waste management systems are designed to
protect the environment and improve conditions in
cities worldwide.
This section reviews the key benefits of effective
solid waste management systems, and common
challenges that prevent cities from establishing and
effectively implementing those systems.
Why Is Solid Waste Management
Important?
Inadequate solid waste management can impact cities
and their residents in myriad ways. These impacts can
generally be categorized into three categories:
• Human health. The improper handling of waste
can impact human health (e.g., decomposing
organic waste attracts rodents, insects, and stray
animals). In some cities, human fecal matter and
urine are not separated from solid waste, which
attract insects and germs that spread disease
(e.g, typhoid, cholera). Mosquitos also pose a
concern when they breed in solid waste (e.g..
used tires); mosquitos can be vectors for diseases
such as malaria, dengue and the Zika virus.
Mismanaged solid waste and open dumpsites can
lead to environmental contamination erf surface
and groundwater, which are common sources of
drinking water. Uncontrolled burning of waste
may result in emissions of air pollutants including
dioxins, furans. black carbon, heavy metals, and
particu late matter, many of which can be toxic
for human health {1SWA 2015). For populations
living in direct contact with or close proximity to
waste disposal sites, these health effects can be
particularly severe For more information on the
health risks to informal sector workers who are
exposed to inadequately managed waste streams,
see the Informal Sector Recyding section.
Environmental. Inadequate control of leachate
water that filters through waste and draws
out chemicals, at disposal sites can lead to
environmental contamination of soils and
waterbodies, impacting local ecosystems (US. EPA
2018d). Mismanaged waste is also a threat to
stray animals and wildlife as animals may try to
consume waste that contains food residue or
scraps. Open burning of waste produces emissions
of black carbon, a component of particulate matter
that has a significant impact on regional air quality
Understanding the Need for Solid Waste Management
O
Key Resources
Key resource boxes
identify useful
guidance materials,
tools, and studies
©0
Navigation
Icons
Clickable icons
facilitate easy
navigation
between topics
DRAFT. DO NOT CITE. QUOTE OR tlSTRJBUTI
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Key Point Boxes
Key Point boxes highlight
important concepts, issues, or
other details to consider when
evaluating opportunities for
improving solid waste
management
O® (f)®®OO©^0©©©
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2 UNDERSTANDING
THE NEED FOR
SOLID WASTE
MANAGEMENT
©
1
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Solid Waste Management (UNEP 2005a)
The Weight of Nations: Material Outflows from
Industrial Economies (Matthews et ai. 2000)
Sustainable Materials Management: The Road
Ahead (U.S. EPA 2009)
What a Waste 2.0: A Global Snapshot of Solid
Waste Management to 2050 (Kaza eta I. 2018)
Global Waste Management Outlook (UNEP and
ISWA2015)
O
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ms
M
fi@
111
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Understanding the Need for Solid Waste Management
9
Section 2
Understanding the Need for Solid Waste
Management
Solid waste management systems are designed to
protect the environment and improve conditions in
cities worldwide.
This section reviews the key benefits of effective
solid waste management systems, and common
challenges that prevent cities from establishing and
effectively implementing those systems.
Why Is Solid Waste Management
Important?
Inadequate solid waste management can impact cities
and their residents in myriad ways.These impacts can
generally be categorized into three categories:
• Human health. The improper handling of waste
can impact human health (e.g., decomposing
organic waste attracts rodents, insects, and stray
animals). In some cities, human fecal matter and
urine are not separated from solid waste, which
attract insects and germs that spread disease
(e.g., typhoid, cholera). Mosquitos also pose a
concern when they breed in solid waste (e.g., used
tires); mosquitos can be vectors for diseases
such as malaria, dengue, and the Zika virus.
Mismanaged solid waste and open dumpsites can
lead to environmental contamination of surface
and groundwater, which are common sources of
drinking water, Uncontrolled burning of waste
may result in emissions of air pollutants including
dioxins, furans, black carbon, heavy metals, and
particulate matter, many of which can be toxic
for human health (ISWA 2015). For populations
living in direct contact with or close proximity to
waste disposal sites, these health effects can be
particularly severe. For more information on the
health risks to informal sector workers who are
exposed to inadequately managed waste streams,
refer to the Informal Sector Recycling section.
• Environmental. Inadequate control of leachate,
water that filters through waste and draws
out chemicals, at disposal sites can lead to
environmental contamination of soils and
waterbodies, impacting local ecosystems
(U.S. EPA 2018d). Mismanaged waste is also a
threat to stray animals and wildlife as animals may
try to consume waste that contains food residue or
scraps. Open burning of waste produces emissions
of black carbon, a component of particulate matter
that has a significant impact on regional air quality
KEY POINT
Marine Litter and the
Environment
Inadequate solid waste management contributes
to the global marine litter challenge. In fact, studies
suggest that as much as 80 percent of marine
litter comes from land-based sources. For more
information on sources, impacts, and strategies for
reducing marine litter, see the Marine Litter section.
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2
Understanding the Need for Solid Waste Management
10
and global climate. Waste disposal sites release
methane, which contributes to the formation
of ground-level ozone. In addition, methane is
a greenhouse gas that contributes to climate
change. For more information on the air quality
and climate change impacts of inadequate solid
waste management, see the Climate and Clean Air
Coalition's Municipal Solid Waste Initiative website).
• Socioeconomic. Inadequate solid waste
management can be costly, both in terms of
direct expenses and indirect costs. Mismanaged
solid waste systems are a missed opportunity for
economic growth, including increased property
values and tourism benefits from having clean
streets and beaches. Programs reducing waste
can lead to cost savings in transportation and
fuel costs, and cost recovery if implemented
correctly. Improved solid waste management can
especially benefit highly vulnerable populations
through cost savings on public health systems
by preventing respiratory issues, skin diseases,
and other health care concerns associated with
inadequate solid waste management (ISWA 2015).
For more information on waste minimization, see
the Prevention and Minimization section.
Taking action to improve solid waste management
can help mitigate these impacts. The sections of this
document that describe best practices for solid waste
management provide more details on the specific
benefits of each best practice.
Common Challenges
Cities recognize the many health, environmental,
and other concerns associated with inadequate
solid waste management; however, they face many
challenges in properly managing this waste. Common
challenges include:
Limited financial resources and capacity. Many
cities have limited capacity for sustainably funding
infrastructure or operations. Cities are often
responsible for implementation but do not have
the finances or financial expertise and struggle
with investment costs, the upkeep of facilities,
establishing a sufficient budget for solid waste
projects, or rising costs and inadequate revenues
as the volume of waste continues to increase.
Prioritizing solid waste management, researching
cost-cutting strategies, incorporating pay-as-you-
throw programs or taxes, and partnering with
international investment organizations are all
options for funding a viable solid waste program.
Although some programs, taxes, or fees will face
resistance when introduced, finding a sustained
source of funding for solid waste management
is an integral part of a successful program.
Other economic considerations for solid waste
management are discussed in the Economic
Considerations section.
• Limited access to and technical knowledge of
equipment. Equipment to handle solid waste
Exhibit 2.1. Challenges to Proper Solid Waste Management
C N
C N
C N
$
w
1
1 Financial
1 Capacity
Technology
Expertise
Staff Capacity
Political
Turnover
Planning and 1
Evaluation 1
Government
Coordination
Working
Conditions
Communication
Available Land
Geography and
Topography
Cultural Norms
Jk
&
V J
o
y
£
v J
I J
V J
I J
o
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Understanding the Need for Solid Waste Management
11
often needs to be imported, and operators may
not have the technical knowledge or resources
for proper and consistent maintenance. If the
equipment is not designed for local conditions,
this incompatibility can add further challenges
because frequent repairs may be needed, and
spare parts may be difficult to find. In tropical
areas, local conditions such as humidity and
heat can negatively affect equipment, leading to
frequent repairs. In many cases, there are multiple
equipment options, some of which may be better
suited to local conditions. Some of these options
are presented in relevant sections in this Guide.
An analysis of the waste stream and available
resources can provide guidance on the most
appropriate option.
• Limited technical expertise and awareness of
best practices. Local governments often lack
the expertise needed to evaluate technologies
or solutions in order to identify the most
appropriate ones for their situation. Difficult
situations can arise when private companies
contract with cities to provide a technology or
implement a project but abandon the project if
the city cannot meet the terms of the contract.
For example, many waste treatment project
contracts include requirements that the city
guarantee a clean or consistent feedstock. Private
companies can and will abandon the work if
the city fails to meet these requirements. Cities
do not always anticipate these challenges, and
projects can fail as a result. Decision-makers and
staff at the local level are often not aware of best
practices that other cities in similar situations
have implemented successfully. Technical
knowledge and awareness of best practices can
be improved by participating in domestic and
international exchanges such as conferences and
webinars organized by the International Solid
Waste Association. Centers of excellence - such
as those identified in the text box to the right -
can also be valuable resources for disseminating
lessons and experiences.
• Limited staff capacity. Many cities lack sufficient
staff who are dedicated to addressing solid waste
management issues. These staff are often focused
on addressing immediate waste emergencies and
have limited time or capacity to engage in longer-
term planning and strategy development.
• Political turnover. Changes in administrations
can result in projects being shut down or
radically altered by incoming officials and key
staff reassignments on large capital projects,
including solid waste management projects. As
a result, many project champions who possess
considerable technical expertise are not available
to see projects through to completion. Solid
waste management legislation, either national
or subnational, which establishes long-term,
sustainable systems that continue across
administrations, can help overcome this barrier.
Maintaining staff continuity on solid waste
management projects and operations can also
help minimize these disruptions.
• Lack of planning and evaluation at both national
and municipal levels can negatively affect the
success of a solid waste management system.
National frameworks or regulations are important
to facilitate long-term planning; establish national
standards; and provide incentives for programs to
reduce, recycle, or compost their waste. Planning
at the municipal level where implementation
occurs is often overlooked and can create
challenges later. This is especially prevalent when
there are unplanned disruptions such as natural
disasters. Creating a national and local plan, which
includes a monitoring and verification system,
will help create a stable solid waste management
system. The Planning Systems section provides
additional details on the importance of planning
and identifies key steps.
• Limited or lack of vertical and horizontal
government coordination. Solid waste
management usually falls under the jurisdiction
of multiple ministries or agencies at various levels
of government. For example, the government
agencies responsible for the environment,
urban and housing development, or agriculture
may all be involved at different parts of the
solid waste management system, but may not
have formal frameworks for collaboration. In
addition, local governments are responsible for
the implementation of national regulations, and
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Understanding the Need for Solid Waste Management
12
process or product (e.g., use of used parts to repair
equipment).This sector can play a large role in
separating materials and determining what waste
will be collected. For challenges of and suggestions
on working with the informal sector, see the
Informal Sector Recycling section.
• Limited available land. As urban areas and
populations continue to grow, the amount of
available space for solid waste facilities, local
collection locations, and transfer stations
decreases.There may not be space, the available
parcels may be too expensive, or local residents
may prevent facilities from being developed due to
fears of smell depreciating their living conditions
or property prices. However, siting these facilities
at a distance from cities, where land is more
available and less expensive, creates a new set of
challenges because hauling waste long distances
can be time-consuming and expensive. Solid
waste managers can work with local and regional
leaders to create a solid waste management plan
that emphasizes the importance of route and
city planning. Diversion or separation programs
will also play a large role in reducing the amount
of waste that needs to be collected at one time.
national governments can play a significant role
in creating enabling environments for successful
local projects. A mechanism that enables
coordination between agencies or departments
and between the layers of government can assist
in creating a holistic system.
• Difficult working conditions. Solid waste
management workers in developing countries
may be underpaid and undertrained (UNEP
2005a). Without proper training and personal
protective equipment, these workers are at risk
of injury or disease. Studies show that a high
percentage of workers who handle waste, and
individuals who live near disposal sites, are at
risk of being infected with worms or parasites
(UNEP 2005a). Difficult working conditions also
result in a lack of motivation for workers and low
employee retention rates.
• Limited or lack of communications with relevant
stakeholders, including residents, can lead to
illegal dumping, misuse and damage of containers,
resistance to service fees, improper waste
segregation, among other things. Coordinated
communications and outreach campaigns can
help ensure that relevant stakeholder groups are
informed and equipped to comply with local solid
waste management requirements. For additional
information on best practices for identifying
and incorporating stakeholders into solid waste
management planning, see the Stakeholder
Engagement section.
The informal sector is an important stakeholder
group to consider and include during specific
steps while planning a solid waste management
program. In general, the informal sector consists
of individuals, groups, and small businesses that
perform informal waste services involving the
collection and sale of recyclables, usually through
middlemen or intermediaries (Aparcana 2017).
Workers earn income by selling the recyclables
they collect to a network of dealers and recycling
industries that work within the formal private
sector (Aparcana 2017, Wilson et al. 2009); in other
cases, workers may sell to other informal sector
workers that reuse the material as input in another
A
©^^© © © © @ © @ © ® © © © © ©
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Understanding the Need for Solid Waste Management
13
Transfer stations and other options for collection
and storage are discussed in the Separation,
Collection, and Transportation section.
Climatologic, geographic, and topographic
conditions all influence the availability and cost
of equipment, the feasibility of technologies,
operating costs, and other aspects of solid waste
management. For instance, cities in tropical zones
might adapt solid waste management strategies to
account for higher temperatures and faster organic
waste decomposition rates than cities in cooler
climates. Geographic and topographic features
can pose challenges for solid waste management
as well. Islands, in particular, face significant
challenges due to limited space for waste disposal,
as well as limited access to and capacity for
recycling. Cities in hilly areas may need to design
disposal sites that are resilient to slope failure.
Appendix B provides several key resources for
understanding best practices for managing solid
waste in specific global regions; these resources
are useful for identifying region-specific conditions
that are relevant for solid waste management
planning.
• Cultural norms. Cultural preferences and
tendencies can complicate solid waste
management efforts. For example, increasing
wealth and lower prices for goods have led to
a dramatic growth in material consumption
and waste generation worldwide. Solid waste
managers are faced with the implications of
these trends. Addressing cultural norms during
solid waste management planning requires a
coordinated stakeholder engagement approach.
More information on best practices for stakeholder
engagement is available in the Stakeholdei
Engagement section.
/
KEY POINT
Cities are exploring various approaches to address
limitations related to technical capacity and
knowledge. One solution cities are implementing
is accessing resources and information available
through "centers of excellence/These are organizations
or partnerships dedicated to sharing information,
providing training, and facilitating exchanges of best
practices related to solid waste management.
Examples of waste management centers of excellence
include:
Municipal Solid Waste Knowledge Platform: Tools:
This resource is maintained by the Climate and Clean
Air Coalition Waste Initiative to exchange information
and resources on best practices [CCAC Undated(b)].
Solid Waste Institute forSustainabilitv: This institute
is based at the University of Texas at Arlington,
Cities Can Leverage
Centers of Excellence
to Build Capacity
and provides capacity-building support and
training sessions to help cities improve solid waste
management (University of Texas at Arlington 2015).
Center of Excellence for Circular Economy and Climate
Change:This center is based in Novi Sad, Serbia, and
provides solid waste-related information exchange
support and technical expertise for cities in Southeast
Europe, the Middle East, and Central Asia (CECC 2020).
Be'ah Environmental Centre of Excellence:lb\s center
provides training and expert support for cities in Oman
to help them improve waste management (be'ah
2017b).
The Energy and Resources Institute Center for Waste
Management:This center provides support for cities
in India through technical assistance, workshops, and
networking (TERI 2020b).
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3 APPROACHES
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Key Resources
Sustainable Materials Management: Non-
Hazardous Materials and Waste Management
Hierarchy (U.S. EPA 2017)
(USAID 2018)
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3
Approaches
17
Section 3
Approaches
No single solid waste management approach is
suitable for managing all materials and waste
streams in all circumstances. Local governments
should work to create a plan that meets the specific
needs and conditions of their area. The United States
Environmental Protection Agency developed a
solid waste management hierarchy (Exhibit 3.1) in
recognition of this reality. This hierarchy provides
a general ranking system for the various solid
waste management strategies from most to least
environmentally preferable; and places emphasis on
reducing, reusing, and recycling (U.S. EPA 2017f).
This section briefly describes each management
strategy found in the solid waste management
hierarchy. More detailed information can be found in
later sections, which are linked in each description.
Why Is a Hierarchy of Solid
Waste Management Approaches
Important?
A solid waste management hierarchy outlines the
most environmentally friendly steps to take before
disposing of waste in a dumpsite or landfill. The first
and most preferred step in the hierarchy, source
reduction and reuse, focuses on preventing waste
from being generated. When waste is reduced or
reused at the source, fewer raw materials are needed
and less waste needs to be collected, transported,
and disposed of.This reduction in extractive
processes leads to both environmental benefits and
cost savings throughout the life of a product. For
waste that cannot be reduced or reused at the source,
recycling or composting is the next best option.
Recycling or composting produces environmental
benefits and cost savings similar to source reduction
and reuse, but requires upfront investment costs to
Exhibit 3.1. Waste Management Hierarchy
S-EBV Waste Management Hierarchy
put an effective recycling or composting program
in place. Source reduction and recycling strategies
both help to reduce the amount of waste that
might ultimately enter the environment, including
waterbodies and marine litter. Energy recovery can
be considered for waste that is not recyclable or
compostable. Energy recovery reduces the amount
of waste that ultimately ends up in landfills and
dumpsites, and offsets the need for fossil fuel use.
However, energy recovery from waste can result
in air pollution emissions and require significant
investment and operational costs.
Elements of the Solid Waste
Management Hierarchy
Source Reduction and Reuse
Source reduction, also known as waste prevention,
refers to reducing the amount of waste generated.
Reducing waste at the source is the most
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Approaches
environmentally preferred strategy (U.S. EPA 2017f).
Individuals can reduce the amount of waste they
generate by purchasing long-lasting and reusable
products, or seeking out products that have been
designed with waste reduction in mind. The Prevention
and Minimization section discusses source reduction
and reuse further.
Recycling and Organic Waste Management
Recycling is a series of activities that includes
collecting used, reused, or unused items that
would otherwise be considered waste; sorting and
processing the recyclable products into raw materials;
and remanufacturing the recycled raw materials into
new products (U.S. EPA 2017f).The informal sector
is a key participant in the recycling system in many
places worldwide. The Recvciina section explains
the benefits and challenges of recycling, and best
practices in setting up a recycling program, including
engaging with the informal sector.
Organic waste management deals with the diversion
and treatment of organic waste through composting
and anaerobic digestion (AD). Compost is organic
material that can be added to soil to help plants grow.
AD is a process that generates biogas - a renewable
energy source - using organic waste as a feedstock.
Composting or using AD for food scraps, yard
trimming, and other organic materials keeps these
materials out of landfills, where they take up space
and release methane, a potent greenhouse gas. The
Organic Waste Management section covers different
options from small-scale composting to large-scale
AD, and best practices for separating this waste from
the general waste stream.
Energy Recovery
Energy recovery is the conversion of non-recyclable
materials into useable heat, electricity, or fuel through
a variety of processes. This process is often called
waste-to-energy. Converting non-recyclable materials
into electricity and heat generates an energy source
and reduces carbon emissions by offsetting the need
for energy from fossil sources, and reduces methane
generation from landfills (U.S. EPA 2017f).
Waste-to-energy plants have a high upfront
investment cost and are costly to operate and
maintain. Additionally, toxic emissions from such units
18
have to be controlled. When coupled with effective
end-of-pipe air pollution controls (i.e., controls placed
on a facility that treats gases before they enter the
environment) and waste disposal techniques, these
plants can potentially reduce both waste volumes and
greenhouse gas emissions (USAID 2018). However,
adequate financing plans and effective pollution
controls are key factors to consider before planning
a waste-to-energy facility as a viable solid waste
management option. The Energy Recovery section
provides more information on different types of
energy recovery technologies and key prerequisites to
consider related to these management approaches.
Treatment and Disposal
Prior to disposal, treatment can help reduce the
volume and toxicity of waste. Treatments can be
physical (e.g., shredding), chemical (e.g., incineration),
or biological (e.g., AD; U.S. EPA 2017f). Landfills are
an important component of an integrated solid
waste management system. Waste that cannot
be prevented or recycled should be disposed of
in properly designed, constructed, and managed
landfills, where it is safely contained to limit its
environmental impacts (U.S. EPA 2002a). Methane
gas, a byproduct of decomposing waste, can be
collected and used as fuel to generate energy. After
a landfill is capped, the land may be used for other
purposes such as recreational sites. The Dumosite
Management and Sanitary Landfills sections discuss
strategies for improving or closing an open dumpsite
and setting up and operating a landfill, respectively.
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4 STAKEHOLDER
ENGAGEMENT
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%
t
ooe
Key Resources
Public Participation Guide (U.S. EPA 2017d)
Handbook on Communication and Engagement
for Solid Waste Management (ABRELPE and
CCAC 2017)
Decision-Maker's Guide to Solid Waste
Management. Volume II (U.S. EPA 1995)
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Stakeholder Engagement
21
Section 4
Stakeholder Engagement
Stakeholder engagement is the process of building
relationships with residents, interest groups, and
other impacted entities in order to gain support for
solid waste management policies, programs, and
service issues. Working with stakeholders helps
create a robust solid waste management system,
protect the environment, and make cities better
places to live.
This section provides information on the advantages
of actively engaging with stakeholders, and
best practices for identifying stakeholders and
incorporating their feedback into solid waste
management planning. Exhibit 4.1 introduces typical
waste sector actors that play a role in most cities.
Why Involve Stakeholders?
Cities have found it necessary to engage the public
throughout the planning process to create a robust
solid waste management program and maintain
long-term support for its operation. Operating a
solid waste management program economically and
efficiently requires significant cooperation from waste
generators (e.g., individual residents and businesses),
waste handlers, the informal sector, and all other
individuals and organizations impacted by the
management of solid waste. To maintain long-term
program support, cities have found that these groups
need to be continuously engaged in decision-making
and informed about policies, programs, and projects.
Exhibit 4.1. Typical Waste Sector Stakeholders
Local
government
Nongovernmental
organizations
Informal
recycling
workers
Multi-jurisdictional
government bodies
TYPICAL ^
WASTE SECTOR
STAKEHOLDERS;
National or
subnational
governments
Residential
waste
generators
Commercial and
industrial waste
generators
Private
companies
Institutional
waste
generators
Academic
institutions
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Stakeholder Engagement
22
Stakeholder involvement in the waste sector should
follow four common principles of stakeholder
engagement:
• Integrity. Transparent and clear purpose and
scope.
• Inclusiveness. Accessible to all stakeholders
whose full range of values and perspectives are
sought.
• Dialogue. Open and genuine discussion
supported by timely and accurate information.
• Influence. Input reflected in outcomes.
Best Practices
When planning for a solid waste management
program, stakeholder engagement encompasses
various local government entities and possible
activities. Cities can share information; consult
stakeholders through various processes; and, in
some instances, encourage active participation in
government decision-making processes. Effective
stakeholder engagement allows cities to tap into
diverse solid waste management perspectives
to improve the quality of decision-making. It
also enables residents to better understand local
government processes; and strengthens their
capacity to participate in deliberative processes
by building confidence, skills, knowledge, and
experience. Cities can use the following steps as a
guide to plan a public participation program.
Getting Organized
Before reaching out to stakeholders, cities have
found it helpful to first gather information from
relevant government entities that are involved in
the applicable solid waste management process.
This review may include waste management
departments, public works departments, and
project finance departments. It is important that
department staff be familiar with the laws and
targets already implemented in that city. This
process will allow them to understand the history
behind the current solid waste program, assess
possibilities, identify and commit resources, and
know where public input is possible. Finally, it
is essential to ensure that there is political will
for these efforts (e.g., support from current and
potential future elected officials).
Selecting the Level of Public
Participation
Cities can integrate stakeholders into the decision-
making process through different activities based
on the program's goal. The spectrum of stakeholder
engagement is generally categorized into three
types of activities:
• Inform. Decisions have already been made or
action is required. There is a need to ensure
that affected stakeholders are aware of the
information.
• Consult. Input, feedback, or advice from the
stakeholders is required before part of the
project or decision is finalized.
• Actively involve. Specific stakeholder groups
or residents are engaged to work through the
issues and develop solutions.
Selecting the type of stakeholder engagement will
help local authorities and decision-makers select the
tools and techniques that can be used since no single
approach will suit every issue. Some techniques
are designed specifically to share information
or elicit views and opinions, while others aim to
effectively involve stakeholders and residents in
decision-making. The most appropriate stakeholder
engagement technique is determined by the issue,
the desired objectives, and the available resources. It
is a best practice to design stakeholder engagement
techniques in collaboration with local organizations
that understand the issues pertaining to the area and
the local residents.
Identifying Stakeholder Roles
Recognizing residents as a valuable resource
unleashes creativity and acknowledges
collaboration as the primary catalyst to promote
local progress. Cities have found it advisable to
clearly designate roles and responsibilities of the
participating parties to ensure accountability and
ownership (of the process). Governments make
policy decisions that direct the implementation
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4
Stakeholder Engagement
23
CASE IN POINT
website
(Ciudad Saludable
Undated).
Engaging with the
aaJfeffl Informal Sector in Peru
» ' —
Ciudad Saludable is a Peru-based, nonprofit organization that aims to improve living
conditions of informal sector workers by creating efficient solid waste management
systems. A key component of their business model is including all stakeholders throughout
the process. The organization's model uses microenterprises that produce compost
and other marketable byproducts. The microenterprises create a large network of small
businesses that employ 1,500 informal sector workers.
Ciudad Saludable has created awareness in Latin America about the working conditions
of informal sector workers. The organization has also helped create new legislative
frameworks that facilitate dialogue at national and local levels, and emphasize education
and knowledge sharing.
Ciudad Saludable reaches an estimated 30 percent of the Peruvian population and
estimates that they have improved the lives of over 6 million people living in urban and
rural areas (Skoll 2006). The Informal Recycling Section provides examples to the benefits
and challenges of engaging the informal sector.
of solid waste management programs, but the
stakeholders listed in Exhibit 4.2 all participate in
the full waste management system in some way
(UNEP 2005a).
Exhibit 4.3 presents an example of how one
municipality in Cambodia engaged a wide range of
stakeholders as part of a comprehensive effort to
improve solid waste management.
Integrating Stakeholder Input into the
Decision-Making Process
Many cities have found it important to share plans
for proposed changes to their solid waste programs
with the public and engage with stakeholders to
solicit feedback. It is a best practice to allow for public
participation in the evaluation of plans and strategies,
and ensure that there is a method of communications
and a point of contact within the government agency
that is leading the effort with whom stakeholders
can work. Stakeholders can participate digitally using
a public platform or group email list, or through
in-person meetings such as open meetings or
roundtables.
Exhibit 4.4 presents an example of integrating
stakeholder input into the decision-making process in
Cebu City, Philippines.
Awareness and Education /-¦
A key aspect of solid waste management is
continuously communicating with and educating
stakeholders throughout the project's life, not only
during select stages of project development. For
example, informing waste generators about solid
waste management activities encourages the use
of collection services and participation in recycling
and organic waste diversion programs. Engaging
with local and national policy makers can lead to
adoption of solid waste management regulations and
increased funding for programs [CCAC Undated(c)].
Traditional awareness-raising programs can include
media campaigns, door-to-door visits to discuss solid
waste management activities with stakeholders,
090
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Stakeholder Engagement
Incorporating Solid
Waste Management in
Primary School Lessons
in Cambodia
Environmental Strategies'
aide for Phnom Penh,
ESI«EE/E1%eBeBE1B
Including solid waste management in school curriculums is an important
way to raise awareness with the youth population. The Institute for Global
Environment Strategies and the United Nations Environment Programme
developed a series of lesson plans for primary school teachers in Cambodia
looking to add environmental education and waste management to their
curriculum. Students can take lessons about waste reduction, source
separation, recycling, and composting; and apply them in their own homes.
and community clean up events. Competitions
among neighborhoods and communities can help
raise awareness for solid waste management and
encourage behavior change. Education campaigns
can be integrated into school and university
curriculums to reach the youth population and
encourage good waste management practices.
Appendix C includes a variety of public engagement
and communication tools.
Questions for Decision-Makers
What are the key issues or areas of interest
for the project?
Who are the key stakeholder groups?
What might be their level of interest?
Who are the key contacts for the groups?
What are the best mechanisms for
engaging with these groups?
Are there groups that would oppose, or
might be affected by, changes to solid
waste management?
How will stakeholders be engaged
throughout the life of the project?
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Stakeholder Engagement
25
Exhibit 4.2. Stakeholder Roles (adapted from UNEP 2005a)
Local government
Local governments plan and implement solid waste
management programs. Multiple departments are often
involved: public works departments collect and dispose of
waste; public health and sanitation departments inspect
and enforce sanitation standards; environmental protection
departments monitor air and water quality, and pollution
control measures; parks or agriculture departments can use
compost that is a product of organic waste treatment; and
financing departments allocate funds available for solid
waste management activities.
National or subnational governments
National governing bodies establish solid waste
management policies and regulations, including waste
handling, treatment, and landfilling specifications; public
health protection measures; and pollution prevention.They
have a role in the inspection and enforcement of treatment
and waste facilities. Additionally, they establish regulations
and standards for the offtake of waste treatment byproducts,
including biogas and electricity.
Nongovernmental organizations (NGOs)
NGOs representing a variety of interests such as workforce
development or safety, environmental protection, economic
development, public health, or even specific neighborhoods
have a vested interested in solid waste management.These
groups can be important allies in planning processes.
Foremost, they have an understanding of the local point of
viewfor local authorities to consider in decision-making.
These groups can also serve an important role in educating
the public on different aspects of solid waste management.
Academic institutions
Local universities often have technical expertise that can
support waste characterization or collection activities
through scientific data collection and analysis, and can also
monitor outcomes of pilot programs.
Informal recycling workers
Informal sector workers collect recyclable and reusable
materials from communal waste bins and disposal sites,
and frequently work in unsafe conditions. There are many
advantages to incorporating informal sector workers into
the formal solid waste management system, particularly to
reduce social vulnerability and promote gender equality
and empowerment for women that comprise much of the
sector. See the Informal Sector Recycling section for more
information.
Commercial and industrial waste generators
Several commercial and industrial enterprises generate
waste, including offices, medical facilities, hotels, markets,
construction sites, industrial operations, and others.These
large-scale waste generators, which do not typically rely on
the same collection means as residential users, sometimes
sort and transport their waste to communal locations (e.g.,
they may arrange private sector agreements for collection
and disposal).
Multi-jurisdictional government bodies (metropolitan
planning entities)
Bodies that bring together multiple local governments for
regional planning purposes are often responsible for larger
operations such as landfills, waste-to-energy, anaerobic
digesters, or composting facilities. These bodies may
collaborate on the siting of new sanitary landfills, transfer
stations, and other recycling or treatment facilities. For shared
facilities, they would also establish disposal or user fees.
Residential waste generators
Residential or household waste can make up a large portion
of the urban waste stream. However, waste collection and
disposal options are often lacking on the periphery of urban
areas, which can lead to open dumping and exposure of
residents to human health harms. Residents can play an
important role in improved waste prevention, minimization,
segregation, and collection schemes; and siting waste
treatment and disposal facilities. Education and outreach to
residents on new waste programs or fees supports better
solid waste management overall. In many cases, women
manage the collection and separation of household waste.
As a best practice, women should be involved in local
outreach efforts.
Private companies
Private sector actors such as waste haulers, construction
companies, landfill site operators, material recovery facility
operators, and material buyers often contract with the
government to perform solid waste management activities.
In countries with extended producer responsibility systems in
place, the private sector is also responsible for the end-of-life
treatment of its products. The Economic Considerations section
discusses extended producer responsibility in more detail.
Institutional waste generators
Other organizations that generate waste include
government institutions, schools and universities, religious
institutions, and hospitals and healthcare facilities. Solid
waste management services to these groups vary; some
municipalities include these organizations in their service
areas, while others require them to contract private waste
haulers. Often the decision depends on the type and
amount of waste these institutions generate. These groups
can also play an important role in education and outreach,
encouraging members to practice good waste minimization
and segregation.
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Stakeholder Engagement
26
EXHIBIT 4.3 CASE STUDY (Q
Stakeholder Engagement in Battambang, Cambodia
in 2011, the City of Battambang, Cambodia, launched an effort to overhaul its solid waste management system.
The city, which is home to more than 150,000 people, was facing several common solid waste management
challenges, including an insufficient operating budget, low collection coverage, waste burning, and associated
environmental and public health concerns. Battambang partnered with NGOs, the Cambodian Education and
Waste Management Organization, and the Institute for Global Environmental Strategies to scope their solid waste
management challenges, engage multiple stakeholder groups, and design strategies for effective solid waste
management.
Battambang engaged a variety of key stakeholder groups as a part of this process, including:
Local government staff took part in a city-to-city information exchange with Phitsanulok, Thailand. This exchange
helped local government staff form a preliminary strategy for solid waste management, with the benefit of the
experiences and hindsight of their Thai counterparts.
NGOs, particularly the Cambodian Education and Waste Management Organization, assisted in facilitating the
process and supporting the local government.
Private sector waste collectors CINTRI and Leap Lim were critical partners in the engagement effort, since
Battambang does not operate any collection services itself. For reasonable fees the city committed to better
collection services. CINTRI also owns and operates the city's dumpsite.
Commercial waste generators, including several markets, agreed to participate in an organic waste segregation
pilot project with the Cambodian Education and Waste Management Organization and CINTRI
Residential waste generators were engaged through the installation
of new waste bins and signage, the distribution of brochures, voice
announcements, community workshops, and a pilot project. Reasonable
fees linked to improved collection services were intended to reduce
waste burning. The pilot project identified a need for more education and
outreach on waste segregation.
Informal recycling workers operated at the local dumpsite in unsafe
conditions, including waste fires. Workers participated in a voluntary
training session on the health and environmental impacts of waste fires,
and how to extinguish them. Additionally, several informal recycling
workers are now employed at the organic waste separation facility.
The Case of Battamban
Aoomach for
Climate Change Mitigation:
Citv (IGES and
UNEP2018)
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Stakeholder Engagement
27
EXHIBIT 4.4 CASE STUDY
The Role of Partnerships in Solid Waste Management
in Cebu City, Philippines
In the Philippines, rapid urbanization has strained the country's ability to properly dispose of waste. In Cebu City,
the responsibility of waste collection falls to the city government and barangays, the smallest administrative
districts in the Philippines. Cebu City collects waste from commercial establishments, institutions, and households
on main roads. Barangays are responsible for waste collection within their administrative unit using their own
vehicles or those provided by the city. Starting in 2010, Cebu City began implementing legislation to increase
waste collection and management.
To increase the effectiveness and participation in such legislation, Cebu City established partnerships with a
number of local groups and institutions, which have led to achievements such as:
• A series of annual competitions through partnerships with businesses and the local media. One example
is the"Best Environmental Barangay Award"that is given to communities with high participation in solid waste
management activities.
• Municipal-wide awareness raising campaigns These campaigns involve local NGOs, homeowner's
associations, informal sector workers, academic institutions, local enterprises, and the media.
• Additional solid waste management through public-private partnerships.Two private ventures have
established treatment facilities near the City of Cebu's landfill. One handles plastics recycling and the other
handles organic waste, reducing the amount of each that enters the landfill.
• Community recycling programs through partnerships with local businesses and tenants. One program
in the Ayala Mall has set up an effective recycling program: businesses in the mall sell their recyclables, which
are purchased and reused by local communities. In addition, the SM
City Cebu Mall has established Waste Market Day on Saturday, where
barangay residents can buy or sell their recyclable materials.
• Increased recycling through partnerships with environmental
institutions. Cebu and the Office of the Environmental Committee
support women's organizations with a weekly "Cash from Trash"
program. Local communities gather and transport recyclable items to a
designated collection site. Here, each barangay is assigned a respective
buyer for the recyclable materials.
of Integrated Solid Waste
Management Strategies
at the Local Level
(IGES and UNEP
2017)
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5 PLANNING
SYSTEMS
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Management. Volume II (U.S. EPA 1995)
Developing Integrated Solid Waste Management
Plan. Training Manual: Volume 4: Integrated Solid
Waste Management Plan (UNEP 2009c)
Developing Integrated Solid Waste Management
Plan. Training Manual: Volume 2: Assessment of
Current Waste Management System and Gaps
Therein (UNEP 2009b)
Global Waste Management Outlook (UNEP 2015)
Key Resources
Improving Solid Waste Disposal in San Cristobal
Municipality. Dominican Republic (U.S. EPA 2018c)
Decision-Maker's Guide to Solid Waste
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Planning Systems
31
Section 5
Planning Systems
Evaluation and planning are critical steps for cities
that are looking to create or evaluate a solid waste
management system. Cities are best positioned to
assess their own needs, evaluate current conditions,
and plan for the future.This section identifies the major
steps for planning and evaluating a waste system.
Why is Planning Important for
Solid Waste Management Systems?
Solid waste management systems can be affected
at various stages by various stakeholders, and can
also be impacted by a variety of external factors. It
is important to go through the planning process
to acknowledge the effects that one management
decision can have at each stage. Having a formal plan
will assist cities in making a smoother transition to
implementation and keeping solid waste projects
on track. These plans can also ensure continuity of
the solid waste management system in the case of
staff turnover within departments responsible for
solid waste management, as well as political changes.
Planning is particularly important for implementing
a solid waste management system because of the
large number and variety of stakeholders involved.
More information on best practices for stakeholder
engagement is available in the Stakeholder
Engagement section.
Key Steps in Planning
Solid waste management system planning can
involve a wide range of activities. Key steps that
many other cities have taken are described below.
For more detailed guidance on establishing solid
waste management systems, see the United Nations
Environment Programme's training manual on solid
waste management planning (UNEP 2009c).
1. Identifying, inventorying, and assessing
resources. Cities have found it helpful to
understand their own needs before creating a
solid waste management system. It is also helpful
to have a political commitment to solid waste
management, a person or group to provide
leadership throughout the process, and a plan for
public involvement (Tchobanoglous and Kreith
2002).This step also involves creating an inventory
of current resources and existing operations by
looking at existing infrastructure, nearby facilities,
and other public and private resources. Other
relevant information to gather includes:
Information about waste type and volume
(see the Waste Characterization section)
Cost assessments of equipment and labor
Demographic data (e.g., population, number
of businesses and households, future
projections).
If data are not available for a specific area, it
may be beneficial to request data from nearby
communities to compare or develop an estimate
for a baseline analysis. Once the data are collected,
they can be organized in a way that best suits
the identified objectives. One way to categorize
data is by associated function in the solid waste
management system (i.e., waste reduction
and minimization, waste identification and
characterization, waste storage and collection,
composting, recycling, or disposal). Other
applicable categories include administration,
education and outreach, and financial resources.
The City MSW Rapid Assessment Data Collection Tool
(CCAC 2020) created by the Climate and Clean Air
Coalition Municipal Solid Waste Initiative provides
a template to assist cities in identifying and
collecting data for solid waste management plans.
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Planning Systems
32
For more information,
see the United States ^
Environmental Protection
Agency's Decision-Maker's Guide
to Solid Waste Management,
Volume II a
^ (U.S. EPA 1995). f
KEY POINT
The Five Ps for Solid Waste
Management
The following five Ps are especially relevant
to consider when creating a solid waste
management system:
Planning: Formulating and following a well-
devised and comprehensive plan.
Price: Basing a plan on a sound economic
analysis.
Publicity: Using public platforms to promote
a plan, gain public support, and educate
residents.
Politics: Sustaining political support during
the planning and implementation phases.
Perseverance: Preparing for a long-term
implementation strategy.
2. Identifying needs. Cities can use the collected
data to help assess their solid waste management
needs. These needs should reflect present-day
realities and also consider future changes (e.g.,
population growth, consumption trends, waste
generation rates). It is helpful to identify data
gaps for future planning and evaluation as a part
of the needs identification process, but a well-
established approach is to use the best-available
data for planning efforts. Volume 2 of the United
Nation Environment Programme's Training Manual
for Developing Integrated Solid Waste Management
Plan (UNEP 2009b) offers directions on how to
assess a solid waste management system and
identify gaps. Planning for disasters and other
significant disruptions is a key need in many
cities. Exhibit 5.1 provides a case study on disaster
waste planning in Nepal.
3. Setting goals and objectives. Goals and
objectives establish a clear vision for the
development of a solid waste management
system. A goal statement helps to identify
the overall desired outcome of a solid waste
management system. Goal statements can
include the value and roles of different
stakeholders, including other policymakers
and residents. Objectives are measurable and
monitored incremental achievements that are
part of the overall goal.
4. Evaluating solid waste management options.
Solid waste management systems incorporate
a range of technology and policy options. To
evaluate options, cities typically refer to the list
of identified needs, goals, and objectives; and
evaluate the feasibility of all possible solutions
The evaluation should also consider available
technical and financial resources. Both short- and
long-term solutions can be identified based on
current needs and locally available resources.
It is a best practice to consider each option
hoiistically because each part of the solid waste
management system affects other parts. Some
examples of evaluation criteria include:
Regulatory requirements
Economic impacts
Applicability based on the waste stream.
5. Defining recommended solid waste
management options. Local authorities and
decision-makers can then use the evaluation to
select possible solid waste management options
to incorporate into the system. It can be helpful
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Planning Systems
lA^t
To save resources, cities can look for examples of past feasibility studies for solid waste management projects. The Global
Methane Initiative I'GMI Undated(e)] and the Climate and Clean Air Coalition Municipal Solid Waste Initiative (CCAC
2018c) are good sources of information on cities'experiences. They include links to feasibility study reports, such as the
ore-feasibility study for an organic waste treatment project in Quito, Ecuador (CCAC 2018c).
to evaluate and prioritize options using the
S.M.A.R.T. method, which ensures that options
are specific, measurable, attainable, relevant, and
timely. Options can be recommended to improve
the current system, add to a specific element in
the system, or develop a new project or service.
6. Developing an implementation strategy.
Developing an implementation strategy
includes identifying specific actions, responsible
parties, and a timeline. The implementation
strategy typically includes details on how the
city will monitor progress in order to measure
achievements in reaching the stated goals and
objectives.
7. Securing funding for implementing the solid
waste management system. Funding can
present a significant barrier for some cities. Many
cities struggle to recover costs for solid waste
management services (e.g., through collection
fees), and accessing external financing for
capital projects can be very complicated. For
more information on economic considerations
of solid waste management, see the Economic
Considerations section.
8. Implementing the plan. Once the city develops
a plan and secures funding for it, and there is
support from stakeholders, implementation
can begin. The planned system or project can
be implemented by public or private entities,
or a partnership between them. For example,
it is common for certain aspects of solid waste
management to be implemented through a
contract between the city and a private company
that offers collection and disposal services. In
these cases, the city may develop a Request for
Proposals for parties with the ability to provide
these services. Private companies can then
submit proposals, and the city can evaluate the
various bids and enter into a contract with the
selected company. Many cities prioritize contracts
with the private sector that are performance-
based, with payments linked to the quality and
quantity of work completed.
9. Monitoring and evaluating the system.
It is important to continuously monitor and
evaluate the solid waste management system
and adapt plans and activities as needed.
Monitoring and evaluation should occur on a
regular, predetermined basis, as this will help the
plan remain relevant to the city, identify areas
for improvement, and can also help highlight
successes of the program over time. Cities
can design metrics or performance indicators
during the planning stage that help measure the
success of the program. It is important to ensure
that metrics are based on data that the city is
able to collect. The results of the monitoring
and evaluation step can also be shared with
stakeholders and the public to demonstrate the
effectiveness of the program or the steps being
taken to fill gaps.
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Planning Systems
34
I
EXHIBIT 5.1 CASE STUDY
Disaster Waste Planning in Nepal
Nepal is vulnerable to natural disasters such as earthquakes, floods, landslides, and avalanches. A 2015 earthquake
devastated Nepal, killing nearly 9,000 people and destroying 800,000 buildings. The earthquake generated nearly
14 million tons of waste, including both household waste and hazardous waste. Due to a lack of resources and
manpower, disaster waste was not a priority for any of the local governmental bodies and in 2019, debris from the
event could still be seen in Nepal.
In 2019, Leadership for Environment and Development Nepal and the United Nations Environment Programme
prepared Nepal's "Disaster Waste Management Policy/Strategy Nepal" (UNEP 2018a). The plan's objectives include
promoting the latest technology through public private partnerships for processing disaster waste, minimizing the
production of disaster waste, and developing techniques and infrastructure to dispose of highly harmful waste. The
policy outlines six main strategies for reaching these objectives:
• Further integrate disaster waste planning into existing laws and legislation related to solid waste
management such as the Disaster Risk Reduction and Management Act of 2017. This Act places the removal
of disaster-generated waste under the roles and responsibilities of district disaster management committees and
states that public and private commercial establishments have a responsibility to appropriately manage waste
and pollution to minimize adverse impacts to people following disasters.
• Enhance the administrative and technical abilities of organizations that handle disaster waste
management through capacity-enhancement programs.
• Reduce the production of disaster waste through stricter building and construction policies that improve
land-use classification and building construction criteria. The plan also suggests using local construction
materials for infrastructure and spreading public awareness about disaster waste.
• Manage disaster waste through the implementation of a unified solid waste management principle. The
steps include:
Identify
temporary
collection space
Classify waste
Select
appropriate
recycling
technology
Ensure investments
from private,
community, and
organizational
donors
Create
employment
through the
management of
disaster waste
Secure necessary funding for disaster waste management, including utilizing a disaster management fund for
provincial and local governments to handle transportation, human resource mobilization, policy formulation, and
planning related to disaster waste.
Evaluate how to minimize the effect of disaster waste on human and environmental health. This process
involves forming an inspection and evaluation committee at all government levels to study the effects of solid
waste management and prepare proper criteria for minimizing the impacts of disaster waste and final disposal of
disaster waste.
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6 ECONOMIC
CONSIDERATIONS
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Using Internal Revenue Streams and External
Financing for Solid Waste Management
Projects (CCAC 2018c)
Primer for Cities for Accessing Financing for
Municipal Solid Waste Projects (ISWA 2017c)
Sustainable Financing and Policy Models for
Municipal Composting (World Bank 2016)
Explainer: How to Finance Urban
Infrastructure? (C40 Cities 2017)
Financing Readiness Questionnaire (CCAC
2018b)
Results-Based Financing for Municipal Solid
Waste (World Bank 2014)
Municipal Solid Waste (MSW) PPPs (World Bank
2019a)
Municipal Finances: A Handbook for Local
Governments (Farvacque-Vitkovic and Kopanyi
2014)
Global Development Alliances (USAID 2019)
.nternational Environmental Finance Tools (U.S.
EPA 2011)
Plastics Policy Plavbook: Strategies for a Plastic-
Free Ocean (Ocean Conservancy and Trash Free
Seas Alliance 2019)
V
n
,v.
Key Resources
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6
Economic Considerations
37
Section 6
Economic Considerations
The operational costs of collecting, treating, and
disposing of solid waste, and communicating with
stakeholders create a significant financial burden for
many cities in developing countries, which can create
a barrier to implementing a successful solid waste
management system. In some instances, solid waste
management accounts for the largest portion of the
local budget; on average, solid waste management
accounts for 20 percent of local budgets in low-
income countries (Kaza et al. 2018). Cities often find
it difficult to track and understand the full range
of costs for solid waste management services, as
different parts of the system are handled by various
departments and partners.
Securing funds for large capital projects, which
requires accessing financing from external sources,
can be even more challenging. Often, even when
cities are able to procure initial investments, projects
can fail due to a failure to properly plan for the
operational expenses of solid waste management
facilities. Moreover, because every city's economic,
legal, and regulatory conditions are unique, there is
no simple solution to address the financial challenges
associated with effective solid waste management.
Fortunately, there are a number of successful
strategies cities have used to more effectively recover
solid waste management costs and secure financing
for large projects.
This section provides an overview of common solid
waste management costs and ways that cities have
offset those costs by using internal funding sources
(e.g., collection fees) and external financing, it also
provides a well-established approach to accessing
financing for solid waste management projects.
Solid Waste Management Costs
Examples of common types of costs associated with
solid waste management projects for both services
and facilities include:
• Planning and administrative costs. Cities
often incur costs for conducting solid waste
management studies and assessments,
developing future plans and designs, and
engaging with stakeholders and communicating
with households. It is a best practice to
incorporate these costs in budgeting for a solid
waste management project.
• Investment costs. Investment costs vary based
on how significant the project is in the context
of the city's solid waste management system.
Project investment costs cover everything from the
planning process to initial implementation, and
include feasibility studies, technical evaluations,
permitting, market research, contract negotiations,
construction supervision, stakeholder
engagement, land acquisition, site infrastructure,
supporting infrastructure, equipment, and
regulatory compliance (ISWA 2017c).
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6
Economic Considerations
38
• Operational costs. Operational costs can
be difficult to predict because situational
and environmental variables may change.
Generally, these costs include labor, fuel, utilities,
maintenance and repairs, and feedstock costs
(e.g., for anaerobic digestion projects), among
other items. Less-obvious costs that may be
harder to estimate include overhead (e.g., office
supplies, communications), outreach and
awareness, taxes and insurance, legally required
monitoring and reporting, emergency response
(e.g., fires or equipment failure), and capacity
building (ISWA2017c).
It is important to consider the various factors that
can influence the costs identified above, including
population growth and increased waste generation.
Local governments often plan only to the next election
cycle, overlooking the long-term strategies that are
needed for a solid waste project plan. Cities have found
it important to encourage best practices and provide
their staff with the necessary training for a successful
solid waste management program.
Internal Funding
Sources of Using Internal Funding
Common sources for solid waste management include:
• Dedicated local revenue sources. Cities can use
local taxes, tariffs, and service charges to recover
the costs of waste collection, treatment, and
disposal. Service charges are typically variable
by waste generator type such as households,
commercial institutions, and industrial facilities.
Some cities have adopted lower collection charges
for rural or low-income households.
Many cities also charge fees ("tipping fees") to
waste haulers when they bring waste to a facility
for treatment or disposal.These fees are then
used for the upkeep and improvement of the
facility. Cities can also use proceeds from the sale
of recyclables, compost, biogas, or electricity from
biogas projects as dedicated sources of funding to
offset their solid waste management costs.
• Local and national operating budgets. Many
cities draw upon their operating budgets to
cover the costs of solid waste management, and
some national governments provide subsidies
to local governments to help address solid
waste management funding gaps (Kaza et al.
2018). However, these sources of funding are
not always reliable, and in many cases general
operating budget funds can be more effectively
used to support activities or programs where the
opportunity for self-sustaining revenue generation
is minimal. For this reason, many cities prioritize
using dedicated local revenue sources over
drawing from the general operating budget.
Benefits of Using Internal Funding
Using internal funding offers several benefits,
including:
Helping to ensure that consistent resources are
available for solid waste management programs
Potentially generating funding surpluses that can
be used to pay for future capital projects
Reducing perceived risks for potential project
investors.
In addition, using internal funding to offset costs
can help reduce the risk of inefficient solid waste
management practices.
Challenges to Using Internal Funding
Cities face several challenges to capturing internal
funding streams for solid waste management. Many
cities struggle to calculate appropriate service fees
for solid waste management. Service fees paid by
generators and tipping fees paid by waste haulers
are uncommon in many developing countries,
and it may be politically and logistically difficult
to start charging for services that were previously
available at no cost. Elected officials in many cities
are also hesitant to enact policies that will impose
waste collection service fees on their constituents.
In addition, cities that have enacted such policies
often struggle to effectively enforce them. Limited
administrative and financial capacity to manage solid
waste management fees and other revenues can also
complicate cities'efforts to use internal funding to
offset solid waste management costs.
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6
Economic Considerations
39
Establishing Variable
Collection Fees Tied to
Socioeconomic Status
Maputo, Mozambique, has established a waste collection services fee schedule that
is tied to socioeconomic status. Waste collection service fees are collected through
household and business electricity bills. Households and businesses that consume
more electricity are charged higher fees for their waste collection services. This
revenue recovery scheme is based on the assumption that electricity consumption
can serve as a proxy for socioeconomic status and waste generation. Linking waste
collection service fees to electricity consumption can thus help ensure that lower-
income households and businesses pay less for waste collection.
More information on the challenges associated with
using internal revenue sources, and the potential
strategies for addressing them, is available via the
Climate and Clean Air Coalition's (CCAC's) Using Internal
Revenue Streams and External Financing for Solid Waste
Management Projects Fact Sheet (CCAC 2018d).
External Financing
Internal funding is often insufficient to pay for large,
capital-intensive infrastructure projects, such as
the construction of a new waste transfer station or
sanitary landfill, In these cases, cities often need to
seek external financing from private investors, financial
institutions, and other partners. Exhibit 6.1 highlights
several common types of financing for solid waste
management projects.
Key steps involved in securing external financing for
solid waste management projects include:
1. Carefully assessing technical needs and
potential project benefits. Before beginning to
plan financial arrangements for a project, it is a
best practice to carefully evaluate its technical
basis.This evaluation involves conducting robust
technical analyses using good data and well-
established methodologies and tools. Project
proposals that are based on strong technical
analyses are perceived by potential investors as
having lower risks. In addition, careful technical
assessments can help reduce risks for cities. For
example, robust technical analyses can help cities
Questions for Decision-Makers
What are the city's true costs of solid waste
management (including all operating,
capital, planning, and administrative costs)?
Are there untapped sources of internal
revenue that the city can use to offset
operational costs?
What are the barriers to using those funding
sources?
What actions can the city take to address
those barriers?
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6
Economic Considerations
40
Exhibit 6.1. Common Types of Financing for Projects in the Waste Sector
LESS RISK
Results-Based
Financing
Public-Private
Partnerships
Bonds
Grants
Loans
RISK
Grants can help offset
the costs of large
projects and do not
need to be repaid.
Common sources of
grants include national
governments, financial
institutions, and
foundations.
This form of
financing links
payment for services
(e.g., waste
collection) to the
achievement and
verification of
pre-agreed outcomes
or targets.
These cooperative
agreements between
the public and private
sector can help shift
some financial burden
and risk from the city to
a private company.
Cities can sell bonds to
institutions or individu-
als with a promise to
pay back the bonds'
value and interest at
specified intervals.
Loans from financial
institutions or banks
typically have fixed
repayment rates over a
set period. Loans
typically require a plan
to ensure terms can be
met and the project is
financially sustainable.
Note: Risk refers to the risk incurred by the city in selecting a type of financing instrument for a waste sector project.
plan projects that are appropriately sized and
designed; this estimate can help reduce the risk
of paying for more infrastructure than is actually
needed.
Careful technical analysis can also make it
easier for cities to determine the feasibility of
meeting their obligations under arrangements
for project implementation. For example, if a city
is considering engaging with a private company
to build and operate an anaerobic digester that
requires a consistent volume of high-quality,
organic waste feedstock, the city can conduct
a waste characterization study to project how
much of that feedstock might be available and
how it can be segregated from the general waste
stream. It can also conduct a market assessment
to determine the demand for the biogas and
digestate produced by the project.
It is also a best practice to assess the
environmental, health, and other benefits of the
proposed project. For example, analyzing the air
quality and groundwater protection benefits of
a proposed solid waste management project can
help cities secure financing from organizations
that have environment-focused missions.
2. Enhancing financing readiness. Identifying
and securing external financing for projects is
a complicated and resource-intensive process.
Before beginning to explore specific financing
opportunities, cities have found it helpful to
first consider their"financing readiness" (CCAC
2018b). Cities can enhance their readiness for
financing projects by conducting a self-evaluation
of the various factors that influence their ability
to identify, secure, and administer financial
arrangements with external partners. Cities can
then work to address financial weaknesses or
potential risks before trying to access financing.
Key"readiness"factors include:
• Capacity considerations, such as whether
the city has staff and resources available for
drafting requests for proposals and tenders,
setting up contracts, procuring services, and
managing finances.
• Political context, including whether the
project is at risk of being canceled by an
incoming administration.
• Legal and regulatory factors, such as
whether there are regulations protecting
potential investors and clear processes for
securing approval (e.g., from the national
government).
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6
Economic Considerations
41
Climate Bonds
CASE IN POINT |g|
Climate Bonds
for Solid Waste
Management
THE WASTE CRITERIA
Climate Bonds Standard
Source: Climate Bonds Initiative
The Climate Bonds Initiative (CBI) is an organization that works to mobilize the global
bond market for climate change solutions. CBI implements a variety of practices,
including publishing market intelligence, providing policy advice, and establishing
standards for green bonds. In 2019, they published a set of criteria for waste
management bonds. By being certified by CBI, a waste management bond can prove
to investors that the projects it funds meet certain mitigation and/or adaptation
qualifications.
• Funding sources, including whether the city
is efficiently recovering costs for solid waste
management services.
• Technical basis for the project, as discussed
under Step 1 above.
Additional information on questions cities have
addressed as part of this readiness evaluation
is available via CCAC's Financing Readiness
Questionnaire (CCAC 2018b).
3. Engaging with financial institutions. Cities have
found it helpful to begin working with financial
institutions early in the project-scoping process.
The early establishment of this relationship helps
ensure that cities meet the institutions' eligibility
criteria, conduct technical and financial analyses
to meet the institutions'requirements, and avoid
wasting limited resources. For example, many large
multi-national banks do not lend to municipalities.
However, by engaging with banks early in the
project-scoping process, cities can understand the
steps involved in working through an intermediary
such as an accredited agency at the national
government level.
Cities typically work with financial institutions to
identify financial instruments that are best suited
for their project, and to tailor the "business case"
for their proposed project. For best practices
on engaging with financial institutions, see the
International Solid Waste Association's Primer for
Cities for Accessing Financing for Municipal Solid
Waste Projects (ISWA 2017c).
4. Assessing financial feasibility. Financial feasibility
assessments are a well-established approach for
evaluating the economic viability and practicality
of a proposed project. These assessments can
require considerable resources to complete; many
cities apply for technical assistance grants from
foundations or other organizations to help reduce
the costs of conducting the studies. Also, cities can
benefit from a wide range of cost-free financial
modeling tools available through international
partnerships. For example, CCAC's Municipal Solid
Waste Initiative offers a financial model for assessing
the economic viability of organic waste management
projects (U.S. EPA 2016c).
5. Structuring financing and completing legal
transactions. There are many ways for cities to
structure project financing. Cities have found it
helpful to work closely with financial institutions
and other potential partners to finalize legal
transactions. The World Bank's Municipal Finances:
A Handbook for Local Governments (Farvacque-
Vitkovic and Kopanyi 2014) is a good resource for
cities on structuring project financing.
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6
Economic Considerations
42
KEY POINT A.
Types of Private Sector Arrangements
Cities typically use the following types of arrangements to secure
private sector support for waste management projects:
• Concession agreements involve selecting a private company
to provide services for a fee over a designated period of time.
Concessions can involve different types of arrangements for
ownership of sites and equipment. For example, a build, own,
operate, and transfer concession requires that the private
company build, own, and operate a facility until the end of the
agreement term, at which time it transfers ownership to the city.
• Design and construction agreements involve selecting
engineering firms to develop waste management infrastructure.
These agreements would not include site operation and
management.
• Service contracts involve selecting a company to take on the
responsibility for the day-to-day operations of a facility or service.
These can be performance-based contracts, with payments tied to
a contractor's effectiveness.
Contracting with the Private Sector
Public-Private Partnerships (PPPs) are long-
term contracts between private parties and a
government entity to provide public services. In such
arrangements, the private party takes on a substantial
portion of the project risk and management
responsibility with the prospect of generating profit
over the long run (PPP Knowledge Lab 2019). Using
these formalized contracts, private companies can
construct, operate, and maintain waste facilities.This
agreement can be an advantage when technical
expertise may be limited, such as in some developing
countries.
To be successful in a developing country, a PPP must
be flexible, provide secure and proven products,
ensure value for the money, and meet environmental
performance requirements (USAID 2019a). PPPs in the
solid waste sector are usually funded by collection
fees, tipping fees, or other direct user charges; as
such, it is critical to ensure stakeholder buy-in before
entering into this type of legally binding partnership.
They can also be funded by revenues from the sale
of waste treatment byproducts, including biogas,
electricity, and compost.
PPPs are typically structured to last over long time
periods, which limits cities'flexibility. In many
countries, private firms are reluctant to invest in local
projects because they are uncertain whether the
contract will remain valid when the administration
changes. Companies typically require long-term
contracts to recover their investments and make a
profit.
Extended Producer Responsibility
Cities in developing countries may find their access
to the sources of financing discussed above is
limited or insufficient to cover all costs of solid waste
management. For example, in some developing
countries, instituting local taxes to cover waste
management costs may not be feasible due to
limited capacity for residents to pay and inadequate
enforcement mechanisms.
In such cases where opportunities for using internal
revenues are limited, some governments have used
Disposal in San Cristobal
Municipality, Dominican
. Republic (EPA. 2018c). A
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6
Economic Considerations
In 2004, the South Africa polyethylene terephthalate (PET) industry voluntarily created a
company (PET Recycling Company NPC, or PETCO) to implement the industry's EPR efforts.
Under the PETCO system, companies that convert PET resin into goods pay a levy on the
amount of resin they purchase. PETCO uses the money collected through the levy to fund PET
recycling initiatives, consumer education and outreach, and other activities.
extended producer responsibility (EPR) systems
to reduce the public's financial burden for waste
management.These systems, which are typically
adopted at the national level, usually establish a legal
requirement that producers assume responsibility
for goods that have reached the end of their useful
life,This responsibility is often financial, but can be
administrative and logistical. In some instances,
producers are required to pay cities directly to
compensate for the cost of collecting and disposing
of goods they originally produced. Producers often
incorporate this cost into their product prices,
thus ensuring that both producers and consumers
of certain goods bear the burden of solid waste
management, rather than the general public.
EPR has been used in developing countries to
manage waste from a variety of product types,
including packaging, household hazardous wastes,
batteries, and electronics. Governments have used
numerous types of EPR instruments, often combining
multiple instruments into one EPR package. Common
EPR programs include (Akenji 2012):
• Product take-back requirements. Producers are
required to collect products at the end of their
useful life.
• Performance standards. These standards can
set a minimum recycled content for products, or
determine the amount of post-consumer
products that producers are required to
recycle. These standards incentivize the use of
product components that are easier to reuse or
recycle.
• Deposit-refund schemes. Consumers are
required to pay a deposit when purchasing a
product, but they are later refunded the deposit
when returning the product for recycling or safe
disposal.
• Advance disposal fees. Consumers are required
to pay a fee at the time of purchase that reflects
the cost to manage the post-consumer waste.
• Material taxes. Producers are required to
pay a tax on raw materials that reflects the
environmental impacts of product disposal. These
taxes can incentivize producers to use more
environmentally friendly materials.
• Eco-labeis and awareness raising. Public
awareness campaigns can help educate
consumers about more environmentally friendly
products; and about the waste collection,
separation, and treatment process. Informed
consumers can make better product choices at
the time of purchase.
OQ€ © Q
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6
Economic Considerations
44
Cities can face several challenges when instituting
EPR systems.The most common challenge
cities in developing countries face is insufficient
infrastructure for collecting and treating the waste
stream components covered under the EPR system.
In addition, for some waste streams it can be
challenging to identify the producer that should
be responsible for the end-of-life collection and
treatment. For example, in some Asian countries,
small businesses rebuild and sell secondhand
electronics, sometimes adding imitation brand
logos to help resell the product (Kojima et al. 2009).
This refurbishment makes it difficult to identify the
original producer when the products reach their
ultimate end of life.
Exhibit 6.2 presents an example of how local
governments have worked with the private sector to
finance solid waste management projects in the West
Bank and Gaza.
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6
Economic Considerations
45
EXHIBIT 6.2 CASE STUDY _(Q
Public-Private Partnership in the West Bank and Gaza
For many years, solid waste in the West Bank and Gaza was disposed of in unregulated dumpsites or burned illegally.
Unstable political and economic conditions hindered municipalities from investing sufficiently in solid waste
management infrastructure and services. To help mitigate this situation, The World Bank, the European Commission,
the United States Agency for International Development, and the Government of Italy provided funding for a sanitary
landfill at Al-Minya, two transfer stations, and related infrastructure for Hebron and Bethlehem in the Southern West
Bank. This area is home to nearly 1 million people who generate almost 500 metic tonnes of waste each day.
Local governments did not have the capacity to sustainably manage this new infrastructure, so the Joint Services
Council for Hebron and Bethlehem (JSC-H&B) worked with the International Finance Corporation to design a PPP
to identify a private sector partner who could manage the landfill. In September 2013, JSC-H&B signed a contract
with a Greek consortium, W.A.T.T S.A.-MESOGEOS S.A. and EPEM S.A., to manage the Al-Minya landfill, two transfer
stations at Hebron andTarqoumiya, and the transfer of waste between the transfer station and the landfill. Local
municipalities are still responsible for primary waste collection, and JSC-H&B provides a minimum waste guarantee of
500 metric tonnes per day and pays fees per ton of waste managed. Because JSC-H&B was not able to cover the costs
of the PPP, the World Bank group also structured an $8 million output-based grant from the Global Partnership on
Output Based Aid to help cover operating fees and improve the sustainability of the solid waste management system.
The project has created over 100 jobs, improved services for 840,000
residents, and will reduce greenhouse gases by 13,400 metric tonnes by 2021.
Additionally, another grant by The World Bank ensured that informal sector
workers were trained to work in other areas.
jmk.
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7 WASTE
CHARACTERIZATION
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Key Resources
Developing Integrated Solid Waste
Management Plan.Training Manual: Volume
1: Waste Characterization and Quantification
with Projections for Future (UNEP 2009a)
Webinar: Best Practices for Waste
Characterisation (CCAC and U.S. EPA 2018)
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Waste Characterization
49
Section 7
Waste Characterization
Waste composition is different in every city, urban
center, country, and region worldwide. Generally,
low- and middle-income countries have a higher
percentage of food/organic waste in their waste
streams than high-income countries; while high-
income countries have a higher proportion of
recyclables such as paper, cardboard, plastic, and
metal (Kaza et al. 2018). These different types of waste
call for different solid waste management strategies,
so cities have found that an understanding of their
waste streams is necessary to design and implement
a relevant and applicable system.
This section provides an overview of sources of solid
waste, methods of quantification, and best practices
for waste characterization.
Why Is Waste Characterization
Important?
Information about the sources, quantity, and
composition of waste provides the foundation for
all stages of a successful solid waste management
program. In particular, understanding the following
factors helps cities design and implement strategies
to improve specific aspects of their solid waste
management strategies:
• Waste prevention and minimization.
Understanding the waste stream helps local
authorities and decision-makers develop targeted
outreach campaigns and policy measures.
For example, outreach campaigns could
encourage large-scale organic waste generators
(e.g., produce markets) to build biodigesters
to generate biogas and digestate as a soil
amendment, an additive that improves the soil
from food waste. Cities can also use data from
waste characterization studies to identify non-
recyclable materials that should be targeted as
part of waste prevention outreach strategies or
policy measures.
• Waste collection. Understanding the waste
stream helps local authorities and decision-
makers plan collection and storage facilities and
programs (e.g., knowing the quantity and type of
organic waste generated will influence decisions
about potential source segregation programs).
• Waste recycling and treatment. Understanding
the waste stream helps local authorities
and decision-makers develop appropriate
infrastructure and plan for changes in the waste
stream due to seasonal changes and holidays. For
example, a city would need to know the amount
of organic waste generated within its boundaries
to make decisions about the appropriate size of
a potential compost facility that can also handle
increased inflow during certain periods.
• Waste disposal. Understanding the waste stream
helps local authorities and decision-makers plan
for the disposal of waste. For example, a waste
characterization study at an existing disposal site
helps a city determine the baseline situation and
the effectiveness of the solid waste management
program, estimate the remaining lifetime of the
disposal site, and plan further waste diversion
and treatment options in the future.
Safety is an overarching concern throughout all
stages of solid waste management. Some wastes
require special handling due to corrosivity, toxicity,
or other dangerous characteristics. Understanding
waste composition allows workers to take adequate
precautions. For more information, see the
Identification of Special Wastes section.
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Waste Characterization
50
Best Practices
This section describes several best practices
for understanding the waste stream, including
knowing the sources, quantity, and composition of
waste; developing future projections of waste; and
accounting for special wastes.
Assessment of the Waste Stream
A baseline assessment of current waste stream
characteristics is necessary for projecting future waste
generation and composition rates. It is also necessary for
understanding what resources (capital and otherwise)
cities might need in the near-term to properly manage
different fractions of the waste stream.
Sources
Solid waste can be categorized by where it comes
from. Common waste generation categories include:
• Residential. Includes all types of households, such
as single-family homes, apartments, and other types
of formal and informal housing. Waste generated by
this sector usually includes food and organic waste;
textiles paper and cardboard; and small portions of
glass, rubber, leather, and metals. A small portion
of plastic is also included; this fraction tends to
increase with economic growth and globalization
(UN-Habitat 2010). Household hazardous waste is a
subset of residential waste that includes chemicals
such as paints, solvents, cleaning agents, batteries,
and electronics.These wastes are addressed in the
Identification of Special Wastes section.
• Commercial. Includes office buildings, shopping
malls, hotels, airports, restaurants, and markets.
Markets, restaurants, canteens, and hotels tend
to have waste streams with a high percentage of
food waste and other organic components. Offices,
hotels, and warehouses tend to generate a large
quantity of recyclables such as paper, cardboard,
plastic, and glass.
• Institutional. Includes schools, medical facilities,
and prisons. Institutional facilities often generate
large quantities of paper. Some institutions -
including hospitals and schools - also generate
high volumes of food waste. Medical facilities
generate hazardous waste, which should not be
handled with general solid waste. Management
options are addressed in the Identification of
Special Wastes section.
• Industrial. Includes manufacturing or industrial
process facilities. Packaging components,
lunchroom and restroom wastes, textiles, scrap
metal, wood/lumber scrap, masonry/concrete,
and similar wastes are typical waste products from
industrial facilities. The type of waste produced
is related to the type of industry, but is typically
produced in high quantities. Industries usually
produce both hazardous and non-hazardous
waste, so it is a best practice to ensure that the
hazardous waste is managed based on the
country's legal requirements and is not mixed in
and collected with non-hazardous solid waste (UN-
Habitat 2010).
Quantity
Two basic options determine waste quantities:
modeling and measurement. Many cities use
modeling techniques that rely on generic waste
generation rates to estimate the total amount of
waste generated. These techniques are typically
inexpensive, but they provide only a general idea of
waste volumes and types. Using such generic data
increases the likelihood of miscalculating waste
generation quantities and rates (UN-Habitat 2010). As
such, modeling outputs may not be a true reflection
of the local waste stream. Modeling techniques
work best if the waste quantity data come from a
neighboring city with similar demographics and
sources, and are then verified later through physical
testing methods.
Physical measurement techniques are more accurate
than modeling techniques, but are also more
expensive and time-consuming. Such techniques
involve sampling the local waste stream to develop a
waste profile through statistical methods to predict
total waste stream quantity and composition by
analyzing small volumes of the waste. This audit can
be challenging because samples should be tested
multiple times throughout the year to account for
seasonal variations (U.S. EPA 1995). A variety of
measurement techniques, which could be carried out
solely or combined with other techniques, include
(UNEP 2009a):
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Waste Characterization
51
'IJ
CASE IN POINT |&
Kampala, Uganda's Waste
Characterization Study
For more information, see
Komakech et al.'s paper on the
waste characterization study.
The City of Kampala, Uganda, conducted a waste characterization study in 2012
to assess the amounts and types of waste disposed of in the Kiteezi Landfill.
The city randomly sampled waste from trucks entering the landfill, and further
analyzed the organic waste to determine its energy content. The results of the
study were very different from those of other Sub-Saharan African cities such as
Abuja, Accra, and Gaborone.
Measuring at the point of generation.
Sampling techniques measure waste generated
by conducting a survey of households. Some
cities have also conducted studies at select
institutional, industrial, and commercial facilities.
Examining records maintained by waste
generators. Some commercial, industrial, and
institutional generators may have records on the
amount of waste they generate. Cities could use
this information to estimate quantities generated
by these sectors.
Conducting vehicle surveys. Surveys of waste
collection vehicles provide estimates of waste
generated by different sources and how they
are being managed (e.g., treatment, disposal).
However, this technique does not account for
uncollected or improperly disposed of waste.
Examining records at disposal facilities. Most
disposal facilities weigh incoming waste. While
these records provide an estimate of waste
disposed of at a facility, they do not capture the
amount generated and treated (e.g., recycling,
composting) or improperly disposed of (e.g.,
open burning).
Composition
Many cities have used waste characterization
(or composition) studies to identify the specific
types and quantities of materials in the waste
stream from a designated area.These studies,
which typically involve sorting waste samples by
hand, can be customized to meet local needs.The
comprehensiveness of categories and material types
(Exhibit 7.1) measured depend on the study's goals
and the types of waste prevalent in a particular
city. Waste characterization studies are typically
conducted at the following locations:
• Waste generation sites. Cities often conduct
characterization studies by sorting waste samples
collected from residences or in commercial areas
(e.g., at produce markets).
• Transfer stations. Waste collected from
generation sites (e.g., homes and businesses) is
often stored at a transfer station before being
hauled to a disposal site. Samples from transfer
stations could provide a profile of the city's
waste composition. Sampling at multiple transfer
stations could provide information to inform city-
wide decision-making.
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Waste Characterization
52
Exhibit 7.1. Sample Waste Categories and Materials for Waste Characterization
(Source: U.S. EPA 2018f)
Waste
Category
Material Type
Examples
Paper
Newspaper/print
Newspapers
Compostable paper
Tissues, napkins, paper towels
Corrugated cardboard
Packing/shipping boxes
Office paper
Envelopes, copier paper, letterhead
Mixed paper
Magazines, junk mail, paperboard, catalogs, phone books
Wax-coated containers
Milk/juice cartons
Plastic
Plastic containers/bottles
(#1-7 and unidentified)
Yogurt, soda, butter, prescription, milk, detergent, flower pots
Plastic film
Shopping/garbage bags, loose film, food packaging
Polystyrene
Expanded or regular clamshells, cutlery, cups
Other rigid plastic
Buckets, toys, storage totes, furniture
Food waste
Bone
Bone
Food scraps
Vegetables, meat, bread
Other solid
Disposable diapers
Disposable diapers
waste
Fine residue
Small indistinguishable materials, usually 0-2 centimeters
Other waste
Materials that do not fit any other category
Metal
Other scrap metal
Other scrap metal, both ferrous and non-ferrous
Ferrous containers
Pet food cans, soup cans, aerosols
Non-ferrous containers
Soda cans, beer cans
Glass
Clear glass
All clear glass
Colored glass
All colored glass
Yard waste
Hard plant fiber
Woody materials - brush, branches, stumps
Garden waste
Foliage, grass, non-woody materials
Other organics
Cotton
Cotton
Textiles
Clothes, shoes, fabric, towels, rags
Leather
Belts, shoes, purses
Rubber
Gloves
Electronics
Electronics
Cell phones, radios, computer
Hazardous
Hazardous
Paint, batteries, sharp medical instruments, chemicals, medical waste
Inert waste
Pa 1 lets/I u m ber/wood
Pallets, scrap wood
Earthenware/ceramics
Dishes, cups
Construction materials
Gravel, bricks, asphalt, concrete, dirt
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Waste Characterization
53
KEY POINT
Risks Associated with
Oversizing Waste Treatment
Facilities
Some cities have unintentionally purchased
or constructed oversized waste treatment
facilities as a result of limited or low-quality data
about the quantity of waste generated in their
communities, which results in unnecessary,
excess capital costs. For this reason, cities often
err on the side of conservative facility sizing.
-n —£¦
• Disposal sites. Waste that is delivered to the
local landfill or durmpsite can be sampled to
determine the waste composition. Recording
the source (e.g., neighborhood and sector) of the
waste enables a more detailed analysis of the
characterization.
Waste characteristics vary by location due to recycling
and improper disposal practices.The location of the
waste characterization should be selected based on
the desired analytical objective. For example, waste
characterization efforts at waste generation sites could
assist in outreach efforts to waste generators while
those at disposal sites could help identify alternate
treatment options, especially as disposal sites run
out of capacity. Exhibit 7.2 presents an example of
how one city in Mexico is using the results of a waste
characterization study to plan a waste treatment project.
Development of Future Projections
Cities have found it essential to project future waste
generation rates and composition in order to size and
design appropriate programs and facilities to treat
that waste.
Future Generation
Accurately predicting future trends in local waste
generation is crucial to long-term program viability.
Cities have found that the most important factors
to consider are population changes, economic
development, and public policy changes.
Local and regional population trends are usually
monitored and projected by national agencies
Economic development has a direct relationship
with waste generation rates; per-capita
waste generation increases with an increase
in economic development and a change in
consumption behaviors
Public policy shifts can quickly change the
quantity and type of waste materials available to
support a given option.
Future Composition
Changes in the composition of the waste stream are
a considerable source of future uncertainty. While
national generic estimates are difficult to apply
locally, they can be a good starting point to consider
when planning a solid waste management program.
Many cities have found it helpful to consider the
following general trends concerning solid waste
composition when conducting long-term planning
for waste disposal:
The fraction of paper, plastic (particularly
packaging), and electronic wastes generally
increases as economic status advances.
The fraction of food and green waste generally
decreases with the advancement of economic
status (see Exhibit 7.3).
The bulk density of waste decreases with
increasing levels of economic development
because of the higher percentage of paper and
plastic products, along with the lower fraction of
ash and food wastes (Savage et al. 1998).
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Waste Characterization
54
EXHIBIT 7.2 CASE STUDY
Waste Characterization in Naucalpan, Mexico
Naucalpan, a suburb of Mexico City, faces several solid waste management challenges. First, the city transports large
quantities of waste to other localities because they do not have their own disposal site, which consumes a significant
amount of fuel and resources. In addition, Naucalpan does not have a systematic means of separating and treating
organic waste, which accounts for a substantial fraction of the overall waste stream. This organic content, which
could be recovered and used to benefit Naucalpan, is included in the waste that is disposed of in far-away landfills,
where it decomposes and produces methane emissions.
To help address these challenges, Naucalpan was considering constructing a facility
to treat organic waste through anaerobic digestion.The biogas recovered from the
digester will be used to generate electricity. Before undertaking this venture, however,
the city needed to obtain high-quality data about their waste stream. Understanding
the quantity and types of organic waste that might be used as a feedstock in the
anaerobic digester was a critical first step in understanding system viability.
In 2017, the United States Environmental Protection Agency (U.S. EPA) - on behalf of the
Climate and Clean Air Coalition Waste Initiative - conducted a waste characterization
study at Naucalpan's transfer station.The study indicated that approximately 69 percent
of the waste handled at the transfer station could be recycled or otherwise diverted
from the landfill, and that more than half of the waste could be used as feedstock in
composting or anaerobic digestion projects. The city is using this study's results to
inform decision-making about the project's design and procurement options.
The graphic below shows the different compositions from waste streams collected from
high-income neighborhoods compared to low-income neighborhoods.
the waste stream in
Naucalpan
(U.S. EPA 2018b).
Waste Composition
To determine the city's overall waste composition, the city estimated the breakdown of waste received at the transfer
station and weighted the low-income neighborhood waste composition values at 60% and the high-income
neighborhood values at 40%.
LOW INCOME HIGH INCOME OVERALL
Hazardous/Electronics/Metal
Glass
Inert fe®
Other Organic
Yard Waste
Plastic
Other Municipal Solid Waste
Organic
13.5%
15.1%
41.6%
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Waste Characterization
55
Exhibit 7.3. Global Waste Composition by
Income Level (Kaza et aL 2018).
Identification of Special Wastes r /
Special wastes require dedicated handling, treatment,
and disposal processes. If disposed of in the solid
waste stream, these wastes can pose serious health
risks to workers, surrounding neighborhoods, and the
environment. However, special wastes are sometimes
comingled with the municipal solid waste stream
by households, commercial and industrial facilities,
and other waste generators. Because of the hazards
posed by these wastes, it is important to rigorously
characterize waste streams, institute segregation of
special wastes, and ensure separate collection and
appropriate disposal of special wastes. Exhibit 7.4
identifies a number of special wastes, the hazards they
present, and potential solutions for managing them.
High income
1%-> r 1%
Upper-middle
income
54%
15%
<1%w 1%
r
V
IH w*
. v
/-I
- VP
" }1 A
Lower-middle
income
Low income
Food and green
Glass
Metal
Other
53%
3% , <1%
56%
2%J i
1%
¦ Paper and cardboard
¦ Plastic
¦ Rubber and leather
Wood
COM
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Waste Characterization
56
Exhibit 7.4.
Special Wastes Overview and Resources
Waste
Description
Hazard
Management Solution
More Information
Electronic
Used electronics
• Human exposure
Standards and
• United Nations Environment
waste
that are discarded or
to contaminants
enforcement for
Proaramme auideline on
sent to a recycler
and cancer-causing
processing e-waste
environmentally sound material
substances
Training and capacity
recovery (UNEP 2013)
• Environmental
building to achieve
releases
sound management
practices
Medical
Hazardous/highly
Disease transmission
Waste segregation
• United States Aaencv for
waste
hazardous medical
Training and
International Development
wastes: chemicals
enforcement at
Sector Environmental Guidelines:
and medicinal drugs.
medical facilities
Healthcare Waste (USAID 2019c)
sharps, feces, bodily
• World Health Oraanization Safe
fluids, radioactive
Manaaement of Wastes from
waste, and similar
Health-Care Activities (WHO 2014)
items
Batteries
• Rechargeable
• Environmental
Improved policies and
• United Nations Environment
batteries used in
releases of lead
enforcement
Alternatives to Lead Acid Batteries
the automotive
particles and fumes
Training and capacity-
website TUNEP Undated(b)l
and industrial
from smelting
building to achieve
• Commission for Environmental
sectors
• Human exposure:
sound management
Cooperation (CEC): Environmentally
• Dry cell batteries
burns to skin and
practices
Sound Manaaement of Soent Lead-
• Lithium-ion
eyes
Acid Batteries in North America
batteries
• Environmental
(CEC 2016)
releases of heavy
• World Health Oraanization
metals
Recvclina Used Lead-Acid Batteries:
• Fires at waste
Health Considerations (WHO 2017)
facilities
• Basel Convention Trainina
Manual for the Preparation of
Used Lead Acid Batteries National
Manaaement Plans TUNEP
Undated(d)]
Household
Hazardous
• Environmental
Public outreach to
• U.S. EPA Household Hazardous
hazardous
household products
releases
reduce waste and
Waste (HHW) website (U.S. EPA
waste
that are flammable.
• Flammability or
improve proper
2019b)
corrosive, or toxic
chemical reactions
handling/disposal
• United Nations Environment
(e.g., cleaners.
Programs to accept
Proaramme Solid Waste
paints, motor oil)
and responsibly
Manaaement report (UNEP 2005a)
process wastes
Industrial and
Waste from
• Environmental
Standards and
• U.S. EPA Hazardous Waste
commercial
commercial or
releases
enforcement for
Generators website (U.S. EPA 2020b)
hazardous
industrial processes
• Flammability or
processing hazardous
• U.S. EPA: Manaaina Your Hazardous
waste
that is toxic or
chemical reactions
waste
Waste: A Guide for Small Business
hazardous (e.g..
Training and capacity
(U.S. EPA 2020c)
solvents, ink, metal
building to achieve
• United Nations Environment
finishing waste)
sound management
Proaramme Solid Waste
practices
Manaaement Report (UNEP 2005a)
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Waste Characterization
57
Exhibit 7.4.
Special Wastes Overview and Resources
Tires
Vehicle tires
• Spontaneous
• Outreach to automotive
• U.S. EPA Scrap Tires: Handbook
composed of
combustion and
repair shops and vehicle
on Recycling Applications and
complex natural and
related releases of
scrap yards on proper
Management for the U.S. and
synthetic rubber
toxins
storage, recycling, and
Mexico (U.S. EPA 2010)
compounds
• Environmental
disposal methods
• United Nations Technical Guidelines
harm to habitats or
• Cooperation with
for the Environmentally Sound
waterways
recyclers to identify
Management of Used and Waste
• Harboring of
reuse options and
Pneumatic Tyres (UNEP 2011)
waterborne
markets
• Scrao Tire Recycling in Canada
pathogens or disease
(Pehlken and Essadiqi 2005)
vectors
Animal Waste from animal
manure processing facilities
serving urban areas
Gases and odors
harmful to human
health
Land or water
contamination (e.g.,
bacteria harmful to
humans, plants, or
organisms)
Processes for treating (e.g.,
composting) or landfilling
waste
Sustainable Animal Manure
Management Strategies and
Practices (MaIomo etal. 2013)
Animal Manures: Recycling and
Management Technologies
(Gomez-Brandon et al. 2013)
Guidelines for Sustainable Manure
Management in Asian Livestock
Production Systems (IAEA 2008)
CCAC Manure Knowledge Kiosk
website [CCAC Undated(d)]
Construction
Drywall, roofing
• Sharp objects (e.g..
• Outreach to builders and
U.S. EPA Sustainable Materials
and
shingles, lumber.
nails, glass) that can
developers on proper
Management Options for Construction
demolition
bricks, concrete, and
transmit disease (e.g..
storage, recycling, and
and Demolition Debris (U.S. EPA
waste
siding
tetanus)
disposal methods
2018e)
• Mold from materials
• Procedures for proper
that have been
landfilling
exposed to the
elements
• Hazardous or cancer-
causing materials
(e.g., asbestos)
Fluorescent Burned-out light Mercury exposure • Processes for collecting Practical Sourcebook on Mercury
bulbs bulbs bulbs and recovering Waste Storage and Disposal (UNEP
materials (e.g., glass and 2015)
mercury-containing
powder)
• Training and capacity-
building to achieve
sound management
practices
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8 PREVENTION AND
MINIMIZATION
OO®0@®O©0©©Q ©
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Key Resources
Managing and Transforming Waste Streams: A
Tool for Communities (U.S. EPA 2017c)
Toolkit: Reducing the Food Wastage Footprint
(FAO2013)
Food Waste as a Global Issue - From the
Perspective of Municipal Solid Waste
Management (ISWA 2013a)
Food Waste: A Global Commitment to Halving
Food Waste bv 2025 (CGF 2020)
Food Loss Analysis Reports and Fact Sheets
(FAO 2020)
oeo@@®®w® o®ao©oo
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8
Prevention and Minimization
61
Section 8
Prevention and Minimization
The prevention and minimization of waste, and the
processes and practices intended to reduce the
amount of waste produced, is a best practice for
solid waste management systems. Reducing waste
and reusing materials are not only environmentally
beneficial, but can deliver public health benefits and
save money.
This section provides an overview of waste
prevention and minimization, and how to incorporate
them into a solid waste management plan.
What is Waste Prevention and
Minimization?
Waste prevention, often called source reduction,
means reducing total waste generation. Food waste,
packaging material, and disposable products are
some of the typical items in waste streams that can
be targeted for waste prevention and minimization.
• Food waste can be addressed by redistributing
food that would otherwise be wasted. Examples
include the use of applications to link food
donors such as restaurants, food caterers,
and grocery stores to food banks; the use of
community refrigerators where excess food
from one household can be accessed by needier
households; and awareness campaigns that can
increase the consumption of produce that would
otherwise be wasted because it does not have the
ideal shape, size, or color. See Exhibit 8.1 for a case
study on food waste reduction in Hong Kong.
• Packaging material in the waste stream can be
minimized by seeking products with minimal
packaging, and instituting fees for plastic and
paper bags.
i
• Disposable product use could be minimized
by encouraging the purchase of durable, long-
lasting goods.
Waste prevention can be as simple as switching from
disposable to reusable products, or as complex as
redesigning a product to use fewer raw materials or
last longer.
Why is Waste Prevention and
Minimization Important?
Because waste prevention avoids waste generation,
it is the most cost-effective and preferred solid waste
management activity. Preventing or minimizing
waste conserves resources (e.g., by reducing
collection and transportation costs), protects the
environment, and prevents the release of greenhouse
gases (U.S. EPA 2017f),
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Prevention and Minimization
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KEY POINT
Challenges in Implementing
Waste Prevention and
Minimization Policies
Cities face many challenges with implementing policies that
require widespread changes in consumer and commercial
behavior. A number of countries have enacted policies
banning or restricting single-use plastic bags. Uncollected
bags frequently become litter that clogs stormwater drains,
impedes wastewater treatment processes, and travels
downstream to become marine litter.
Challenges countries sometimes face when banning the
sale or use of these bags include:
Limited access for consumers and vendors to
economically viable alternatives.
These challenges highlight the importance of working
closely with stakeholders to develop robust solutions that
can be enforced effectively.
Reducing the quantity of waste for transport
and disposal is a best practice for solid waste
management programs. Waste can be recovered
at the source, during transport, or at the disposal
site. Earlier separation is preferable because it leads
to cleaner and higher-quality materials, and can
also reduce transport and disposal costs. Incentives
that integrate and foster the involvement of the
informal sector can be essential to minimizing waste
(USAID 2018). See the Separation, Collection, and
Transportation section.
As discussed in the Waste Characterization section,
economic development typically leads to increased
consumption of different types of goods (especially
electronic goods). Many cities have therefore found
it helpful to account for economic development
projections when planning waste prevention and
minimization strategies.
Vendors using plastic bags purchased through the
black market
Consumers relying on alternative bags that have
other environmental impacts (e.g., bags made of
unsustainable materials)
Incorporating Prevention and
Minimization into Solid Waste
Management
Stakeholders at all levels play an important part in
waste prevention and minimization, and prevention
and minimization strategies should account for
local social norms and practices, and economic and
market conditions. The Stakeholder Engagement
section identifies best practices for working with a
wide range of individuals and organizations to design
effective solid waste management strategies.
Many countries already practice some form of waste
reduction because people value materials differently
based on their culture. Repair and reuse, upcycle,
resale, bartering, and giving used goods as gifts are
practices that are encouraged in some parts of the
world (UNEP 2005a).
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EXHIBIT 8.1 CASE STUDY
Food Waste Prevention n Hong Kong
Approximately 3,600 metric tonnes of food are wasted daily in Hong Kong. Food waste represents approximately
40 percent of all solid waste that is collected and transported to be landfilled, which results in excess use of fuel,
landfill capacity, and labor. Much of this food waste comes from supermarkets, which typically discard produce that
do not meet consumer preferences.
PARKnSHOP, which operates nearly 300 supermarkets in Hong Kong,
has been working to reduce food waste while also addressing another
social concern: providing food for underprivileged populations.The
supermarket chain created a partnership with a local nongovernmental
organization (NGO), "Food Rescue for the Needy/Through this program,
the supermarket delivers surplus food to the NGO that would otherwise be
wasted, and the NGO distributes it to individuals or families in need. From
2012 to 2018, PARKnSHOP donated more than 800 metric tonnes of food
that would otherwise have been landfilled.
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9 SEPARATION,
COLLECTION, AND
TRANSPORTATION
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Key Resources
Collection of Municipal Solid Waste in
Developing Countries (UN-Habitat 2010)
Decision-Makinc (U.S. EPA 2002b)
Waste Collection: A Report (Kogler 2007)
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Separation, Collection, and Transportation
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Section 9
Separation, Collection, and Transportation
Effective waste separation and collection programs
are a critical component of an integrated solid waste
management system. These activities involve a
range of stakeholders, from individual households
to collection fleet operators; many cities have
found it important to establish clear methods of
communications and coordination among those
groups. Effective waste separation, collection, and
transportation also involve a variety of types of
infrastructure, including receptacles for separating
and storing waste before it is collected; and vehicles
such as carts, bicycles or tricycles, and trucks.
This section provides an overview of the benefits and
challenges of proper waste separation, collection,
and transportation, as well as best practices for
implementing these programs.
Why is Collection Important?
Uncollected waste results in littering, illegal dumping,
and burning, which in turn can cause serious health
and environmental impacts.These include:
Marine litter. Plastics that travel through sewage
and stormwater systems end up in waterbodies
that feed into oceans. For more information on the
relationship between solid waste management
and marine litter, see the Marine Litter section.
Local flooding. Waste can clog drains and slow
or stop the flow of stormwater out of a city.
Loss of real estate value. Unsightly waste
dumped on roads or open lots can lead to
lowered land values.
Spread of diseases. Vermin, such as parasites, rodents,
and pigs, are attracted by uncollected waste and can
carry various diseases.
Local water pollution. Leachate from waste
dumped in open spaces can pollute local water
sources.
Local air pollution. Burning of uncollected waste
contributes to increased local concentrations of
harmful pollutants such as fine particulate matter
and volatile organic compounds.
The blockage of drains by uncollected waste was the cause of a major flood and outbreak of waterborne disease in
Surat, India, in 1994 (Wilson et al. 2013). Drains clogged by plastic bag waste have also been blamed for flooding
in Ghana (Hinshaw 2015) and Bangladesh (BBC News 2002). Waste may also be pushed by stormwater or blown
by wind into drains from nearby collection or transfer facilities. This problem is easily preventable, and it is a best
practice to place such facilities away from open drains.
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Separation, Collection, and Transportation
68
I*--.
KEY POINT
7 vh \
Collection Coverage
versus
Collection Efficiency
When setting collection goals, cities have found it important to distinguish between collection coverage and
collection efficiency. Collection coverage typically refers to the fraction of the city's geographic area over which
collection services are provided. Collection efficiency typically refers to the fraction of waste generated in a given
area that is collected. A city that collects much of the waste generated in a small part of its geographic domain
would thus be said to have a high-collection efficiency but low-collection coverage.
• Global climate change. Decomposition of organic
waste in anaerobic conditions leads to emissions
of methane, a powerful greenhouse gas. In
addition, burning of uncollected waste contributes
to emissions of black car bon, a component of fine
particulate matter. Black carbon is a short-lived
climate pollutant that has significant impacts on
global climate change.
Challenges
Many cities struggle to increase their waste collection
coverage and efficiency due to a wide range of
complicating factors, including:
• Increased volume of waste. Rapid urbanization,
population growth, and changing consumption
patterns with economic growth contribute to an
increase in the amount of waste generated.
Limited space for storing and transferring
waste. Increased population density decreases the
amount of space available for community bins and
transfer stations.
• Physical obstacles to collection. For example,
cities built in valleys or on steep slopes tend to
have narrow roads that are difficult to navigate for
proper waste collection.
• Shortage of funding. Many cities face a shortage
of funds, as well as competing demands to provide
numerous public services.
• Limited stakeholder awareness and
participation. Effective collection schemes
depend on the public being well-informed and
willing to participate, especially in instances
where cities are implementing source-separated
collection systems (discussed below). For more
information on strategies for working with
the public to raise awareness and increase
participation, see the Stakeholder Engagement
section.
Best Practices
This section describes best practices for storing and
collecting waste, including understanding waste
composition, identifying appropriate waste storage
before collection, planning collection locations,
segregating waste to facilitate collection for
appropriate treatment and disposal, incorporating
the informal sector in waste collection, incorporating
transfer stations, optimizing collection frequency and
routes, and using the most appropriate collection
vehicles.
Waste Composition
Characterizing the sources, quantities, and types of
waste can help a city plan for the collection of waste.
For example, cities need to know the volume of each
fraction of the waste stream in each part of the city
in order to set appropriate collection frequencies. For
more information on understanding the waste stream,
see the Waste Characterization section.
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CASE IN POINT |g|
Door-to-Door
Collection in
Trichy, India
Exhibit 9.1. Storage Infrastructure Characteristics
The City of Trichy piloted the use of Quick Response (QR) codes™ by providing them
to residents and commercial establishments in one ward, information is entered
online instantly as waste collectors scan the QR code™ at each collection point, which
ensures that no collection points are missed. Bangalore conducted a similar pilot,
but expanded it to ensure proper segregation by having waste collectors upload
photographs of non-segregated waste along with the appropriate QR code™.
Storage Infrastructure
Cities utilize waste storage infrastructure to
aggregate collected waste before it is transported to
a disposal facility. Cities use a variety of decentralized
facilities and equipment to store waste, including
depots; closed enclosures or pads; fixed bins or drums
for communal storage; and portable bins, buckets, or
bags for residential storage (UNEP 2005a).
Cities have benefited from considering a range of
factors when planning this infrastructure, including
what type of container should be used for different
waste types, what size container should be used, and
where the containers should be located. Systems
for storing waste are most effective when they are
designed to account for cultural norms and practices.
For example, cities can locate containers in places that
are easily accessed by collection trucks in the morning
when most households typically dispose of their waste.
Cities can collect input from stakeholders during
the storage infrastructure planning process (see the
Stakeholder Engagement section for more information).
Location
A successful approach is to locate containers in areas
that are easily accessible by collection vehicles, within
walking distances of intended users, and in locations
acceptable to residents. A well-designed storage system
will not be effective if containers are in locations that are
inconvenient for residents or waste collectors.
Design
It is a best practice to design waste collection
containers so they are easy to use. Street containers
that are difficult to use (e.g., if they have heavy
mechanical lids) encourage people to drop their
waste beside the container rather than in it. Not
only does this factor result in sanitation issues, but
scattered waste takes more time to load into collection
vehicles. In areas where children commonly dispose of
household waste, cities have found it helpful to design
containers to facilitate use by children (e.g., containers
that are shorter in height and have easy-to-open lids).
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CASE IN POINT
Communal
Collection in Addis
Ababa, Ethiopia
Addis Ababa's Cleansing Authority is responsible for primary waste collection. The
authority employs registered micro- and small-scale enterprises. These enterprises
equip workers with 1,5-cubic-meter pushcarts to collect waste approximately daily from
multifamily, residential developments, following the communal collection model. When
workers arrive at a development, they alert residents (e.g., by ringing a bell) to bring their
waste to the building entrance. The workers then transport the waste using pushcarts
to a "skip point" (i.e., transfer station; see Exhibit 9.6), where it is stored in 8-cubic-meter
containers until collected by a truck.
If waste is segregated before collection, the design
of bins in residences and communal locations can
encourage people to place waste into the appropriate
bin. For example, bins can be color-coded for ease of
waste separation; blue can represent recyclables and
brown can represent organic waste. Pictures and lists
of what can and cannot be placed into communal bins
can be posted on or near the bins.
It is also a best practice to appropriately size the
containers. If the containers are too small, waste will
accumulate on the ground around them. If they are
too large, individuals might be inclined to dispose of
large, bulky items in the containers.
Maintenance
Maintaining areas around waste collection containers
is a best practice because residents are more likely
to dispose of waste outside of the containers if they
are dirty or obstructed (UN-Habitat 2010). In many
countries the informal sector customarily sorts through
waste in communal containers, looking for items they
can sell to recyclers, which can result in waste scattered
around the containers. Stray animals often forage for
food around waste storage containers. One approach
to controlling this problem is to give informal sector
workers specific responsibility for certain containers,
allowing them access to the waste in exchange for
keeping the area clean (UN-Habitat 2010). For more
information on engaging the informal sector in solid
waste management, see the Informal Sector Recycling
section. Some cities have reduced their maintenance
costs and minimized scavenging by installing
containers that have above-ground receptacles and
below-ground repositories that are only accessible to
authorized collectors.
Collection Models
Cities use a variety of collection models to ensure high-
collection coverage and efficiency. Selecting the most-
appropriate collection model also helps cities avoid
excessive costs. Cities typically consider a range of
variables when determining which collection models
are most suitable for their situation (see Exhibit 9.2).
Waste Separation
Waste separation, or segregation, before or during
collection increases efficiency and reduces costs
because it minimizes the labor and infrastructure
costs required to segregate mixed waste. Waste can
be segregated by different parties at each step in the
collection process;
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Exhibit 9.2. Illustrative Comparison of Collection Models
Curbside/Door-to-Door Collection
AAA
o AM
In curbside collection, waste is collected at each household property.
As collection vehicles pass, waste collectors ring a bell or otherwise
announce their arrival to alert residents to bring their waste to the
street, where it is collected for transportation to a transfer or
aggregation facility. Households can have a single bin, or multiple
bins if source segregation is in place; see the Waste Separation
section. With this type of collection, the city generally informs
residents about the day and time of waste pickup.
Some cities have collection systems where bins can be left outside
for hours; in these cases, a well-established approach is to ensure
that the bins have lids and/or are heavy enough to prevent animals
from entering them or knocking them over.
Technology can improve the efficiency of door-to-door collection;
for example, cities can have waste collectors use Quick Response
(QR) codes™ to ensure that the waste is collected and segregated
properly.
Advantages:
More convenient for residents
Consistency in waste collection
Disadvantages:
Can be costlier due to frequent
vehicle stops
Some households may be
inaccessible due to road conditions
and vehicle size
Potential illegal dumping or burning
due to infrequent collection
Missed collection if residents are not
at home
Communal Collection
AAtc
it
r
AA
In communal collection models, residents bring their waste to
large bins that are centrally located in their neighborhoods.
With this type of collection, the city sends collection vehicles
to remove the waste regularly. Communal collection works
well when there is considerable support for participation in a
dense area. Smart technology can be incorporated by having
electronic monitors signal when large bins are full, which will
help the city avoid overly full bins and reduce collection costs
by reducing the number of trips to bins that are not full.
Advantages:
Fewer stops for collection vehicles
Less waste stored in residents'homes
Disadvantages:
Potential illegal dumping if bins are
inconveniently located
Animals can enter or knock bins over
if they are not designed properly
Illegal burning of waste if it is not
picked up frequently
Illegal dumping of bulk waste
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• Waste generators. Some cities provide color-
coded bins to residents and ask that the waste
be segregated at the source (Exhibit 9.3). For
example, the Municipal Solid Waste Management
Rules of India prescribe national requirements
for local solid waste management. These rules
dictate that green bins be used for organic
waste, white bins for recyclables, and black bins
for all other waste. Commercial establishments
sometimes have multiple bins to separate paper,
plastic, metal, glass, and organic waste.
• Waste collectors. In some cities, waste collectors
hang multiple bags on their push carts, bicycle
carts, or vehicles; and use them to segregate
the waste as they collect it from households
(Exhibit 9.3). They typically separate out recyclables
into the bags and deposit non-recyclables,
including organic waste, into a bin. If the city has
an organic waste treatment facility (composting or
anaerobic digester), the collector can also separate
the organic waste at collection time.
Dedicated communal bins. Some cities provide
communal bins in multifamily housing complexes
or in neighborhoods for individual residents
to dispose of their waste. Many cities have
segregation with color-coded bins (e.g., blue for
paper and paper products, brown for organic
waste, white for clear glass, green for colored glass,
yellow/orange for recyclable packaging material,
and grey/black for other waste).
The categories of waste that cities choose to
segregate will depend on their ability to separately
handle each category. It is especially important
for cities to identify local and regional markets for
recyclables, and tailor segregation plans accordingly.
In instances where markets for certain products do
not currently exist, cities can work with the private
sector to spur market demand.
The informal waste sector plays a significant role
in solid waste management in many developing
countries. Informal sector workers segregate waste to
collect recyclables from households and communal
bins (Exhibit 9.5). Cities in many developing countries
are working to incorporate them into formal solid
I
$
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Exhibit 9.6. Small-Scale Transfer Station in Addis Ababa, Ethiopia (left); and Larger-Scale
Transfer Station in Coirnbatore, India (right)
waste management activities. The Informal Sector
Recycling section provides additional information on
informal sector recycling.
Transfer Faciliti**^ ^
In many countries, large disposal sites are located
far from densely populated areas. In such instances,
a transfer station is used as an intermediate point
where collected waste is aggregated (and sorted, if
applicable) before being transferred to the disposal
site. The waste is sometimes compacted at transfer
stations to reduce the number of trips to disposal sites.
Benefits of Transfer Facilities
Consolidating loads from smaller collection vehicles,
including bicycles and carts, into larger transfer
vehicles helps reduce hauling costs by enabling
collection crews to spend less time traveling to and
from distant disposal sites, and more time collecting
waste.This strategy also reduces fuel consumption
and emissions, collection vehicle maintenance costs,
road wear, and overall traffic.
Transfer stations can also serve as a location to sort
and recover waste (U.S. EPA 2002b). Performing
sorting and recovery activities at transfer stations
contribute to fuel savings, reduced wear on trucks,
and fewer trips to landfills (USAID 2018).
Different Types of Transfer Facilities
Transfer stations can include small, highly decentralized
and un-mechanized facilities such as empty lots that
serve as temporary disposal lots, where residents
and commercial establishments may dispose of their
waste or where primary collectors (e.g., collectors
using handcarts and bicycles) deposit waste they have
collected (Exhibit 9.5). Larger, more robust transfer
stations can be used as a place to aggregate, sort, and
load larger quantities of waste. Waste that arrives at
these transfer stations may come directly from residents
and businesses, from secondary collectors that retrieve
waste from smaller transfer stations, or from city trucks
that collect the waste directly from the source.
Siting Transfer Facilities
Transfer facilities should be located away from open
drains to prevent waste from clogging drainage
systems and entering waterways, and should be
constructed or sited on impermeable surfaces. Other
site selection considerations include distances that
smaller vehicles need to travel from the primary
collection site to the transfer station, and larger
vehicles need to travel from the transfer station to the
disposal site.
Collection Frequency
Cities typically collect waste at different intervals
depending on a range of factors. Key considerations
when specifying how frequently waste will be
collected include:
• Cost. The greater the frequency of service (e.g., daily,
weekly), the more costly the collection system will
be to operate.
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• Customer expectations and timing. Many cities
have found it helpful to coordinate the timing of
waste collection in commercial areas according
to local business operations (e.g., collection
can occur after markets close). Many cities also
arrange for collection during times with less road
traffic.
• Capacity limitations. Waste collection fleets
may need to collect waste more frequently in
neighborhoods where communal or household
bins quickly reach capacity.
• Climate. Cities in tropical climates tend to
collect waste daily because biodegradable waste
decomposes more quickly in these climates, and
begins to smell and attract flies and other disease-
carrying vermin. Cities in temperate climate zones
may collect waste biweekly or weekly.
Optimized Collection Routes
Optimizing waste collection routes leads to reduced
labor, fuel, and vehicle maintenance costs. In
addition, reduced travel time leads to lower vehicle
emissions, and public health and environmental
benefits. Route optimization is a four-step process
(Shuster 1974):
1. Reviewing existing policies to understand the
roles and responsibilities of the department that
is responsible for solid waste management. This
evaluation includes understanding the financing
of waste collection, the labor laws affecting the
waste collectors, and the service area.
2. Macro-routing the service area(s) or determining
how daily collection routes are assigned, based on
reviewing existing processing and disposal sites.
This calculation involves determining the optimum
amount of waste that can be processed and
disposed of each day, and dividing the collection
area into subsections or districts that collection
crews can adequately service on a given day.
3. Performing route balancing and districting to
ensure that the workload is distributed equally
among collection crews.
4. Micro-routing the service area(s), or looking in
detail at a service area to determine collection
vehicle routes. This review is important for
optimizing waste collection routes, potentially
resulting in significant cost savings. Micro-
routing takes many factors into account,
including geographic features, demographic
considerations, vehicle design, point-of-collection
features, requirements for residents and
businesses to set out their waste on the street,
and collection frequency. Cities have found it
important to consider route adjustments based
on seasonal changes or population growth.
Some cities (e.g., East Delhi Municipal Corporation in
India) have incorporated smart systems with global-
positioning system locators attached to collection
vehicles, which allow them to track their vehicles and
ensure that the vehicles are not idling or skipping
collection areas.
Collection Vehicles
The selection of waste collection vehicles can greatly
impact the efficiency of a solid waste collection
program. Cities typically consider the following
factors in selecting appropriate vehicles:
• Vehicle size. It is a best practice to base vehicle
size on the amount of waste to be collected.
Large compactor trucks are suitable only if
relatively large volumes of waste are picked up at
each stop. Large trucks are not suited to frequent
collections of small amounts of waste where a
small truck or motorized tricycle would be more
cost-effective. Large trucks are also not feasible in
narrow alleys or limited roadway spaces.
• Types of waste collected. Segregated waste
collection might require vehicles with multiple
compartments, depending on the degree of
segregation.
• Frequency of stops. The frequency of stops
typically guides cities'selection to allow for vehicles'
constant starting and stopping, and moving at low
speeds in typical weather conditions (hot, humid,
dusty) or on unpaved roads.
• Vehicle load-carrying capacities. Cities can
estimate how many households their vehicles can
serve before reaching capacity, and set a target for
each vehicle to serve slightly less than that number.
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CASE IN POINT |g|
Electric Collection Vehicles
in Rio de Janeiro, Brazil
For more information, see
the Rio de Janeiro case
study on electric collection
vehicles (C40 Cities 2018).
Rio de Janeiro has adopted ambitious climate and air-quality goals to reduce
its contribution to climate change and local air pollution.The municipal waste
management corporation recently purchased a number of electric collection
vehicles to collect hospital waste from several areas of the city.
Vehicle maintenance. Many cities have found
that selecting vehicles that are commonly
available or easy to maintain (USAID 2018)
increases the reliability of a vehicle. Repairs can
be made more quickly if parts can be easily
purchased from local retailers without requiring
foreign exchange and importation. Monitoring
the condition of each vehicle via routine checks
allows operators to replace components before
they fail.
Vehicle emissions. Cities are increasingly
concerned about the contributions of heavy-duty
vehicles to local air pollution. Waste collection
fleets can contribute substantial amounts of
particular matter to the local environment,
especially because they typically operate on a
daily basis, drive long distances to disposal sites,
may not be well-maintained, and spend much of
their time idling in traffic or at collection points.
For these reasons, many cities are considering
alternative fuel or low-emissions vehicles for their
collection fleets.
Questions for Decision-Makers
Do the crews have assigned route boundaries?
Have the crews' maps been updated in the past
two years?
Were the current routes developed based
on time, distances, vehicle capacity, and
geography?
Has waste generation remained approximately
constant since the last update of the waste
collection routes?
Are all of the crews completing their routes as
scheduled?
Does the collection services supervisor know
how many stops and containers are included in
each individual route?
Does the collection services supervisor know
how long each route should take?
Are there mechanisms for users to file
complaints about late or improper collection,
and for reviewing and addressing those issues?
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Vehicle Options
There is a broad spectrum of waste collection vehicle
types, ranging from un-mechanized handcarts to
large compactor trucks:
Handcarts. Handcarts can be
used for door-to-door collection
on narrow streets where a wide
truck cannot enter. Waste is picked
up by the cart and brought to
a truck waiting at the end of the street. The use of
handcarts increases the amount of labor needed, but
ensures that all residents have access to solid waste
management services. Handcarts typically have
open boxes attached and are designed so that the
collected waste can be picked up or emptied directly
into the waste collection truck.
Pedal bicycles or tricycles. Pedal
cycles have increased speed and
the ability to reach more residents
in less time. These cycles often
have an attachment in the front or
rear where waste is stored (UNEP
2005a).
ww
Animal carts. Horses, mules,
and donkeys can also be
used to transport waste on
carts. The use of animal carts
can be beneficial as they do not require fossil fuels,
have very low capital and operational costs compared
with motor vehicles, and make less noise than large
collection trucks. The carts are designed to be tipped
into a transfer or storage location (UNEP 2005a).
Motorized tricycles. A three-
wheeled motorcycle is another
way to collect waste from
residents along narrow roads
in urban areas.Their design is similar to that of
pedal cycles and they are commonly used in Asia.
Motorized tricycles use less fossil fuel than trucks, and
are able to carry more weight and move at greater
speeds than hand carts or pedal cycles.
Tractor and trailer systems.
A tractor-trailer system allows
for greater amounts of waste
to be carried and then easily removed by detaching
the trailer. This capability makes a tractor-trailer
option a suitable option, especially for communal
collection bins.
Trucks. Commercial trucks can
also collect waste, especially from
communal bins.The design usually
includes a large flatbed walled on all
sides and open at the top with a hinge tailback.These
trucks are not usually designed for waste collection,
and therefore require a ladder or someone to manually
throw in and remove the waste.
Fore and aft tipper. This design
allows for easy rear-loading while
carrying high volumes of dense
waste. The back of the truck can
tip back and forth to compact
the waste or dump its contents when at the disposal
facility. These trucks are often suited for waste streams
in countries that have a high percentage of dense,
moist content.
Cities have found that preventing litter during the
waste collection process is also important. Small
amounts of waste may get scattered in the road
during the waste loading process. Coordinating the
work of collection crews and street sweepers can
ensure that any waste dropped in this way is quickly
removed. Furthermore, waste in open collection
vehicles can be covered by a net or other material to
prevent it from escaping.
Cost Recovery
Waste collection can account for a substantial portion
of a city's operating budget. As such, cities in lower-
income countries generally have less-comprehensive
waste collection services than higher-income
countries (Kaza et al. 2018). Establishing a means of
recovering waste collection costs is a key component
of a sustainable and effective waste collection
program.
For more information on financing solid waste
management programs, see the Economic
Considerations section.
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Marine Litter
Waste generated on land can reach marine
waterbodies through various processes if it is not
properly collected. For example, waste that is not
collected can be dumped or blown into coastal or
inland waterways (NOAA 2019).The infographic on
the following page illustrates how different sources
contribute to the global challenge of plastic marine
litter. As the graphic shows, the majority of plastic
marine litter (as much as 80 percent according to
some estimates) comes from land-based sources
(Eunomia Undated).
Awareness of the prevalence of marine litter at a
global scale - and concern over its impacts - is
rapidly growing. Simultaneously, the marine litter
challenge is becoming more acute as increasing
quantities of waste that degrade slowly are
accumulating in the ocean.There is an international
focus on improving waste collection and
management options to reduce marine litter. This
section identifies the impacts marine litter causes,
and best practices for reducing it.
Impacts
Key impacts associated with marine litter include:
Species impacts. Fish, mammals, and plants can be
directly impacted by marine litter, whether through
ingestion of materials, physical damage from floating
or sunken objects, or entrapment (e.g., in detached
nets).
Habitat damages. Marine litter can harm entire
habitats or ecosystems through physical impacts
(e.g., on coral reefs) or through cascading effects on
species at the bottom of the food chain.
Economic impacts. Marine litter can damage marine
infrastructure and vessels, degrade aesthetics in areas
dependent on tourism (e.g., beaches), and harm
individuals and businesses that depend on the health
of marine resources.
Best Practices
The most effective means of minimizing impacts of
land-based marine litter is to focus on its sources,
which involves:
Minimizing and preventing waste
An excellent way to prevent marine litter is to
avoid generating waste in the first place. For more
information on best practices for waste minimization
and prevention, see the Prevention and Minimization
section.
Improving waste collection systems
Improving waste collection systems (e.g., by
increasing collection coverage and efficiency) can
help reduce the risk that waste will be improperly
disposed of in waterways, accidentally swept
downstream during storm events, or otherwise
allowed to enter oceans. For more information on
best practices for waste collection, see the Separation,
Collection, and Transportation section. Exhibit 9.7
provides a case study of how Santos, Brazil improved
waste collection to reduce marine litter.
Bolstering recycling efforts
By supporting the local recycling industry, cities
can create demand for materials (especially plastics,
which account for as much as 90 percent of marine
litter) that might otherwise enter ocean-bound
waterways (Basel Convention 2020). For more
information on best practices for recycling, see the
Recycling section.
-------
PLASTICS IN THE MARINE ENVIRONMENT:
WHERE DO THEY COME FROM? WHERE DO THEY GO?
• •
eunomia iiii
LAND BASED - INLAND 0.50 Mtpa
LAND BASED -
COASTAL
Million tonnes
pe r Annum
M
TOTAL PLASTIC
ENTERING THE MARINE
ENVIRONMENT
12.2
Millson tonne*
per «nnum
\ /
AT SEA FISHING UTTER 1.15
1.75
Mtpa V SHIPPING LITTER 0.60
OCEAN
SURFACE
18kg/km2
(1% of total)*
PRIMARY
MICROP LA STIC - 0,95 M^lion tonnes per wnum
(Thousand
lonnes) »80
.16 f35
* ifi * * ir
Improving environmentally sound disposal
of waste
If waste cannot be recycled, it should be managed
and disposed of in an environmentally sound manner.
It is important to have disposal options to limit or
prevent illegal dumping or open dumpsites where
waste can quickly be carried by the wind and end up
in waterways and, eventually, the ocean. For more
information on improving the disposal of waste,
see the Dumpsite Management and Sanitary Landfill
sections.
Despite advancements in marine litter removal
technology, cleaning up marine litter remains a
labor-intensive effort. Removal efforts are also costly
and inadequate to fully address the marine litter
challenge. As a result, the best way to address marine
litter is to prevent it from entering the environment.
*
SEA FLOOR
70kg/ km2 (94% of total)
*Pm!« cortw-tfaejcxn 'ou#vd P*ofie gyr* 4>w
Source: Eunomia.
Key Resources for Marine Litter
Strategies to Reduce Marine Plastic Pollution from Land-
Based Sources in Low and Middle - Income Countries
(IGES and UNEP 2020)
Sources (NOAA 2019)
Plastics Policy Plavbook: Strategies for a Plastic-Free
Ocean (Ocean Conservancy and Trash Free Seas
Alliance 2019)
Fighting for Trash Free Seas: Ending the Flow of Trash at
the Source (Ocean Conservancy 2019)
Global Partnership on Marine Litter [UNEP Undated(a)]
Sinale-Use Plastics: A Road map for Sustainabilitv (UNEP
2018b)
© © © © ® ® ® ®^^© ® © © © ® ©
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9
Separation, Collection, and Transportation 79
Exhibit 9.7 CASE STUDY _(Q
Santos, Brazil's Door-to-Door Separate Collection Scheme
When it comes to solid waste management, Santos faces challenges such as landfill closure, unavailable land for a
new landfill, and low recycling rates. Given Santos'close proximity to Brazil's coastline, marine litter is also a primary
concern.
In order to reduce litter entering the ocean, Santos set up Lixo Limpo in 1990, a program to collect dry recyclables
along the beachfront. In 1995, the program was expanded to collect dry recyclables from the entire region. To
further reduce marine litter, Santos established "Recicla Santos," which was codified into law in 2016. The program,
which imposes fines on those who do not comply, implemented mandatory source segregation into wet and dry
waste to improve collection. The door-to-door separate collection scheme collected 4,500 metric tonnes of dry
recyclable materials between 2017 and 2018.
A key component of the separate collection scheme is separate regulations for small and large waste generators.
Small waste generators (e.g., households and small businesses) must segregate dry and wet waste, which is
collected by the municipality's regular door-to-door collection service. Large waste generators (e.g., those that
produce up to 120 kilograms or 200 liters per day) must also segregate their waste. However, they are responsible
for contracting the collection, transportation, and final disposal of waste from private providers. The municipality
will collect their dry waste with prior authorization. Santos' partnerships
with local institutions to educate community members on collection and
separation have also been successful.
In addition to their source-separated, door-to-door collection scheme,
Santos implemented "Cata treco,"a program to collect bulky, construction,
and demolition waste on demand to avoid inadequate disposal.The city
estimated the program collected 36,646 metric tonnes of waste in 2017.
"Cata treco"is part of a partnership that operates out of the municipal
market and trains residents to use wood from discarded furniture. This
program has reused approximately 3 metric tonnes of wood that would
have otherwise gone to a landfill.
the Scene of the Local Waste
Management System
(ABRELPE Undated).
oed@d®dowo®^@©oo
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10 ORGANIC WASTE
MANAGEMENT
¦mm
O00©0€)®O 0 0 © © ©
-------
Key Resources
Municipal Solid Waste Knowledge Platform
[CCAC Undated (a)]
U.S. EPA Anaerobic Digestion Web Site (U.S.
EPA 2020a)
Biogas SectorTools and Resources (GMI 2020)
Technical Guidance on the Operation of
Organic Waste Management Treatment Plants
(CCAC and ISWA 2016b)
Sustainable Financing and Policy Models for
Municipal Compostinc (World Bank 2016)
Toward Sustainable Municipal Organic Waste
Management in South Asia (ADB and the
Australian Government Aid Program 2011)
Global Food Waste Management: An
Implementation Guide for Cities (Jain et al.
2018)
Reducing Food Loss and Waste: Setting a
Global Action Agenda (Flanagan et al. 2019)
Anaerobic Digester (AD) Project Screening
Tool (CCAC 2018a)
OrganEcs -Cost Estimating Tool for Managing
Source-Separated Organic Waste (U.S. EPA
2016c)
9@©@0
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Organic Waste Management
83
Section 10
Organic Waste Management
Exhibit 10.1. What is organic waste?
Organic waste accounts for more than half of the
solid waste stream in many low-income countries
(Kaza et al. 2018). Many cities have found that
diverting organic waste from disposal sites can lead
to considerable health, economic, and environmental
benefits. Organic waste management strategies
such as composting and anaerobic digestion (AD),
which involves using natural processes to turn
organic content into biogas, are feasible options
in most locations, but require careful planning and
implementation.
This section provides an overview of the benefits of
diverting organic waste from dumpsites and landfills,
and best practices for organic waste management
(including composting and AD).
What is Organic Waste?
Organic waste in the solid waste stream is generally
divided into two categories:
• Food loss and waste. Food waste includes
unused produce from pre-consumption sources
(e.g., markets and restaurants) and food left over
after consumption. Food loss includes unused
products from the agricultural sector (e.g.,
unharvested crops).
• Green waste. Green waste includes waste from
gardens, landscaping, and tree trimming.
Why Focus on Organic Waste?
In most instances, organic waste is collected and
disposed of in dumpsites or landfills. This practice is
concerning for several reasons:
• Collection, transportation, and disposal costs.
Organic waste is generally very dense and has a
high moisture content.Transporting large quantities
of organic waste from points of generation to
disposal contributes to higher fuel-consumption
rates and higher fees at disposal sites.
<3
ft*
GREEN
WASTE
FOOD LOSS
AND WASTE
• Loss of nutrients. Organic waste is a rich source of
nutrients that could be used to enrich both urban
forestry and agricultural land.
• Impacts on disposal sites. Leachate and gas
management and structural shifting from organic
decomposition are some of the most cost-
intensive activities at disposal sites. Additionally,
disposing of large quantities of organic waste in
landfills reduces the operating lifespan of those
facilities.
• Environmental impacts on local air quality and
climate change. When organic waste decomposes
it contributes to air, water, and ground pollution.
For instance, when organic waste decomposes
in anaerobic conditions it produces methane
gas. Methane is a short-lived climate pollutant
and a precursor to ground-level ozone, an air
pollutant. Release of methane at landfills causes
fires that result in both local air pollution and
black carbon emissions that contribute to climate
change. Leachate results in both water and ground
pollution. Finally, decaying organic waste also
causes odor problems.
In light of these impacts, many cities are adopting
policies and programs to divert organic waste and
use it as a resource. Organic waste, when separated
properly, can be composted or processed in anaerobic
digesters to create valuable products (e.g., compost,
biogas, digestate) that cities can use or sell.
Qv®
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1
Organic Waste Management
84
More information
is available on the
Reciclo Organicos
website (Reciclo
Organicos 2020).
CASE IN POINT |g|
Santa Juana, Chile's
Source Separation
Collection
The Municipality of Santa Juana is the first municipality in Chile to have 100 percent coverage
of source separate collection. The city has a composting and recycling facility with capacity to
treat all the source-separated waste from households.
After the first year of operation, the amount of waste the city disposes at the landfill (a 100
kilometer distance) has declined by 30 percent, saving the city considerable fuel costs and
gate fees.
Treatment Options
Organic waste treatment options are generally divided
into two categories: composting and AD.
• Composting. Composting is the controlled
decomposition of organic materials in the
presence of oxygen. Composting requires three
general steps: (1) combining organic waste
types, such as wasted food, yard trimmings,
and manure; (2) adding wood chips, shredded
paper, or other bulking agents to accelerate the
breakdown of organic waste; and (3) allowing the
compost to stabilize and mature through a curing
process (U.S. EPA 2015).
• AD involves the breakdown of organic materials
by microorganisms in the absence of air. The
products of the AD process include biogas, an
energy source that contains mostly methane and
carbon dioxide, and digestate. Digestate is the
material that is leftover after organic materials
are anaerobically digested. Digestate is rich in
nutrients and can be used as fertilizer for crops.
Exhibit 10.2 illustrates how organic waste can be
converted to organic fertilizer through composting
and Exhibit 10.3 illustrates how AD transforms
organic feedstocks into biogas and digestate that
can be used in various ways. The design of anaerobic
digesters varies based on operating temperature and
type of feedstock used (U.S. EPA 2018a).
Exhibit 10.2. Illustration of a Composting System
Manure
Food Waste
Wastewater
Biosolids
I | |
Rejects
Composting Windrows
J
Compost
Organic Fertilizer
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Organic Waste Management
85
Exhibit 10.3. Illustration of an AD System, Showing Feedstocks and Byproducts (U.S. EPA 2018a).
Manure
dMrp, Mint, taref.
Wastewater
Biosolids
>.«, nunteifiat umiQi auS)
Food waste
Other Organics
itfl. onrt®- era***, Tau, c-li,
croc insidm, nutti
(Ml houairnid, »jjii.
cafutri*, qrot t?>, f&od pioii-cuuni
Feedstocks can be digested singularly or in combination (co-digeBtran}
Anaerobic Digestion
Horticulture
Products
(*4-, 4i*J KMftdHHrit, p«ft1
pumpoujq
Bioproduct
Feedstock
14 Q. litSeliileCi)
Biogas
Digest ate
Other
Products
Animal
Bedding
Organic
Fertilizer
Renewable
Natural Gas
Electricity
Vehicle Fue
Crop irrigation
Key resources at the beginning of this section provide
more details on technologies and best practices for
designing and operating facilities. For example, the
World Biogas Association and C40 Cities produced
an Implementation Guide for Cities for food waste
management (WBA/C40 2018).This guide provides
step-by-step processes for evaluating and selecting
organic waste treatment facilities.
Treatment Technology Co-Benefits
In addition to the general benefits of diverting
organic waste from landfills, composting and AD
can lead to a range of environmental and economic
benefits. For example, the use of compost enriches
soil, helps retain moisture, suppresses plant diseases
and pests, and reduces the need for chemical
fertilizers. AD minimizes odor, reduces pathogens and
solid waste, and produces gas and digested materials
(both wet and dry) that can be used for various
applications (U.S. EPA 2016b). Biogas produced by AD
can be used as a renewable fuel source for cooking,
heating, cooling, transportation, and electricity.
Digested materials left over from AD can be used as a
soil amendment or fertilizer,
Project Scale
Organic waste can be treated in a centralized or
decentralized manner, depending on local conditions
and needs. Centralized models involve a large facility
where waste is transported from multiple locations in
a city or region. For example, some cities in India have
large composting facilities near their current disposal
sites (e.g., South Delhi, Coimbatore, Pune), and the
City of Talca is building the largest compost facility in
Chile at its landfill.
The decentralized model emphasizes processing and
treating waste in proximity to where it is generated.
For example, cities can support residents and
businesses in setting up household-scale composting
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1
Organic Waste Management
86
wzSMKBttm
India's comprehensive Solid Waste Management Rules of 2016 require that all waste
generators, from street vendors to large commercial buildings, separate their waste into
three categories: biodegradable, non-biodegradable, and household hazardous waste.
The bottom line is that waste that is not separated will not be collected.
projects (e.g., by providing guidance on how to
build a small compost bin). Cities can also establish
smaller-scale facilities that receive organic waste from
a limited number of households and businesses to
either compost or treat in AD systems.
Many cities are moving toward decentralized organic
waste treatment systems. The decentralized model
has multiple benefits, including less fuel needed from
reduced transportation of heavy organic waste and
increased flexibility if part of the system breaks down.
In a decentralized model there are multiple, small
composting or AD facilities; and if one or more of
those facilities is offline, waste can easily be diverted
to another facility nearby. In a centralized system
with a large facility, a shutdown can lead to waste
piling up. Regardless of whether it is centralized or
decentralized, it is important for every plant to have
contingency plans if it breaks down.
In most instances, cities will benefit from establishing
small-scale pilot projects that focus on collecting
organic waste from sources where the risk of
contamination from inorganic waste components is
low. For example, it is typical to begin organic waste
treatment projects by focusing on organic waste
collected from produce markets, commercial-scale
kitchens, or other locations where large quantities
of organic waste are not contaminated with other
wastes.
Best Practices
This section describes several best practices for
managing organic waste, including collecting and
analyzing data on organic waste, evaluating policy
and program options for separating organic waste
from the general solid waste stream, analyzing
options for treating separated organic waste, and
developing organic waste management projects.
Strategic Planning
The Planning Systems section discusses key steps
in planning and evaluating a waste system. As part
of their solid waste management system, cities
can establish a formal organic waste management
plan or program. While there are upfront costs to
establishing an organic waste diversion program,
cities can potentially reduce the costs of collecting and
transporting waste for disposal (e.g., by organically
treating waste in decentralized facilities, rather than
transporting them long distances to landfills outside
the city). As an added benefit, cities can potentially
generate revenue from the products of organic waste
treatment (e.g., compost, biogas). Steps for enacting an
organic waste management include:
1. Understanding the waste stream. Organic
waste diversion needs to be based on the type of
waste generated and the source of the waste. The
design of a diversion program therefore should
depend on the results of a waste characterization,
as described in the Waste Characterization section.
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1
Organic Waste Management
87
Sao Paulo, Brazil's
Organic Waste
Management Strategy
The City of Sao Paulo developed an organic waste management strategy in 2016 to
complement their pre-existing integrated waste management plan that is based on four
pillars: the separate collection and transport of organic waste, the small-scale treatment of
organic waste, communications with stakeholders, and the creation of economic instruments
to motivate various actors. The strategy is tailored to the city's particular waste management
practices and needs, and it presents a detailed approach for systematically building an
organic waste management program from the bottom up.
2. Enacting supporting policies. Local policies,
such as mandatory separation rules, can
help drive organic diversion efforts. For more
information on policies that cities have enacted
to promote waste stream segregation, see the
Assessment of Separation Options section below.
3. Understanding technology options. Treatment
options will depend on the type of waste
generated and other local conditions.
4. Engaging stakeholders. Communications and
outreach are critical components of effective
organic waste diversion programs, as it can help
boost diversion rates. For more information on
stakeholder engagement strategies, see the
Stakeholder Engagement section.
5. Ensuring quality.The products, including the
compost and digestate from organic waste
treatment, have to be of high quality to ensure
that they do not contaminate the land that they
are applied on.
6. Assuring safety. There are a variety of hazards
at treatment plants, including mechanical,
explosions, and fire.
Data Collection and Analysis
Understanding the quantities, types, and sources
of organic waste in the waste stream is critical for
identifying and selecting effective policies and
technologies to divert that waste, treat it, and use it
as a resource.
The Waste Characterization section presented best
practices for conducting waste characterization
studies to map quantities, types, and sources of
waste in general. These studies can provide helpful
information to begin identifying potential organic
waste management options. In addition, cities can
conduct more detailed analyses of organic waste to
better plan and design broader diversion strategies,
and individual organic waste management projects.
For example, many cities have conducted analyses
to identify businesses, institutions, and facilities that
generate large quantities of organic waste. These
sources are often the first ones that cities target for
organic waste management pilot projects. Locating
compost or AD facilities near these large generators
can reduce waste transportation costs.
Assessment of Separation Options
After a city collects data on sources of organic waste,
it must determine the most-appropriate means
of encouraging or requiring residents, businesses,
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Organic Waste Management
88
and institutions to separate organic materials from
the general waste stream. Separating organic and
inorganic fractions of the waste stream minimizes
the risk of contamination in compost; contaminated
compost is very difficult for cities to sell and is
inadvisable to use. Separating organic waste from
inorganic waste is also important for AD projects, since
clean organic feedstocks help ensure optimal digester
efficiency.
Separation strategies often include:
• Separation mandates. Many cities require certain
segments of the population to separate the
organic fraction of their waste. These mandates
can be applied to all waste generators or targeted
at certain types of entities (e.g., large-scale,
organic waste generators; large, new housing
development projects).The Separation, Collection,
and Transportation section provides more
detail on separation mandates and how they are
implemented through separate waste collection
programs.
• Bans or fees on organic waste disposal. Some
cities have implemented economic penalties and
incentives, including bans on future disposal of
organic waste in dumpsites and landfills, increased
tipping fees on organic waste to encourage
businesses and collection companies to divert these
materials for treatment, and reduced collection fees
for households segregating waste correctly.
• Organic waste diversion targets. Similar to bans
on organic waste disposal, some cities use diversion
targets (e.g., reducing the amount of organic waste
disposal by a certain future year) to help guide
decision-making about solid waste management
programs and projects.
• Voluntary programs. Cities can establish incentive
programs or challenges to encourage residents,
businesses, schools, and other participants to
segregate their waste.
Selection of Treatment Technologies
When selecting technologies to treat separated
organic waste, cities typically consider a range of
technical and financial factors, including:
• Technical considerations include quantities,
types, and sources of organic waste to be treated;
the size and operating capacity of a potential
treatment facility; the quantity of end products
(e.g., compost or biogas) to be sold or used; and
any relevant standards or certifications required
for those products.
• Financial considerations include capital costs
associated with building the facility, operating
costs to maintain it, revenues from selling
its products, and marketing plans for selling
products to targeted buyers. Cities can use tools
such as the OraanEcs mode I (U.S. EPA 2015c)
developed by the CCAC Municipal Solid Waste
Initiative to estimate the costs of composting or
AD projects for treating organic waste.
Cities often conduct feasibility studies to analyze
these factors, identify potential challenges (see
Exhibit 10.4), and determine whether and how
a project should be developed. Well-prepared
studies (e.g., with high-quality data and careful
documentation of assumptions) can help cities secure
support from financial institutions and private sector
partners.
Questions for Decision-Makers
Where are large-scale generators of organic
waste located and what types of waste are
generated, and will there be a sustained
feedstock for treatment facilities?
What separation strategies make the most
sense, given the city's organic waste diversion
objectives?
What infrastructure and support will affected
entities need from the city to ensure organic
waste is separated successfully?
What is the market for the products resulting
from treatment, including compost, biogas,
and digestate?
OO©©®®©© QV®
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Organic Waste Management
89
CASE IN POINT
Composting in Dhaka
Bangladesh
For more information, review
C40 Good Practice Guides:
Dhaka - Composting Project
(C40 Cities 2016a).
Waste Concern, a nongovernmental organization based in Dhaka, has been operating
composting projects in Bangladesh since 1995. Initially the organization struggled to sell the
compost they were producing, primarily due to strong competition from chemical fertilizer
companies.To address this challenge, the organization worked to ensure that their compost
meets the highest-quality standards and now sells their compost to fertilizer companies, who
then sell it to farmers as a soil amendment to complement chemical fertilizers.
Several tools are available to assist cities in
conducting technical and financial feasibility
assessments of organic waste management projects.
Organizations such as the CCAC Municipal Solid
Waste Initiative and the Global Methane Initiative
offer collections of such tools, such as the Municipal
Solid Waste Knowledge Platform: Tools [CCAC
Undated(b)] and Tools and Resources [GMI Undated(a)]
for biogas projects.
Questions for Decision-Makers
What size project makes the most sense,
considering the local demand for products
and availability of feedstock?
What technologies makes the most
sense, given the city's specific needs and
capabilities?
How will the city ensure a dedicated stream
of quality feedstock?
How will the city ensure effective operations
and maintenance of facilities at full capacity?
What processes and procedures will the
city put in place to ensure their compost
meets quality standards, or their AD system
generates optimal quantities of high-quality
biogas and digestate?
How will the city market the products (e.g.,
compost and biogas) to potential end users?
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Organic Waste Management
90
Exhibit 10.4. Common Organic Waste Treatment Challenges and Potential Solutions
Challenges Potential Solution
Operations hazards Providing quality assurance systems and training
and occupational risks
Substantial capital and Considering cost-recovery mechanisms, including charging collection fees that are
operating costs specific for organic waste
Avoiding excessive capital costs by using small, decentralized composting facilities at
the neighborhood scale
Composting
Challenges
Limited demand
for compost from
end users
Low-quality
compost/
contamination
Challenges
Low/inconsistent
biogas production
Potential Solution
Selling compost to fertilizer companies that can market the compost with other products
Using compost on public lands for landscaping, soil amendment, or erosion-control
projects
Conducting outreach to local farmers who can use the compost
Working with national governments to create enabling environments that increase
demand for compost (e.g., adopting quality standards, mandating that fertilizer companies
purchase and market a certain percentage of the compost)
Securing feedstock from locations that produce pure organic waste streams that are easily
separable (e.g., produce markets)
Communicating continuously with stakeholders about acceptable types of organic waste
(see Exhibit 10.5)
Following established technical guidelines for maintaining optimal operating conditions
Providing thorough and ongoing training opportunities for facility staff
A
n
Potential Solution
Ensuring an optimal mix of feedstocks to maximize biogas generation potential
(e.g., using the AD Project Screening Tool (CCAC 2018a))
System malfunction
Securing feedstock from locations that produce pure organic waste streams that are
easily separable (e.g., produce markets)
Following established technical guidelines for maintaining optimal operating
conditions
Providing thorough and ongoing training opportunities for facility staff
QV®
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Organic Waste Management
91
Credit: Gobierno de Chile
EXHIBIT 10.5 CASE STUDY
Separating and Recycling Organic Waste in La Pintana, Chile
La Pintana conducted a waste characterization study and determined that vegetable waste contributed the largest
portion of the city's solid waste stream. In order to manage this waste appropriately, the government decided
to start a composting program built on existing infrastructure and other local resources. Residents of La Pintana
receive 35-liter bins, and local college graduates in environmental fields conduct door-to-door outreach campaigns
to teach residents the importance of separating out vegetable waste. The system for collecting separated waste
was built on existing routes, and did not increase the number of waste collection trucks or costs. The collected
vegetable waste is transported to a treatment plant where it is composted. The plant includes a compost area that
can process about 18 metric tonnes of waste per day and a vermiculture area that can treat an additional 18 to 20
metric tonnes of waste per day (Allen 2012).
Approximately 35 metric tonnes of vegetable waste are collected
each day from households and street markets in La Pintana. The
waste diverted from landfilling saves the city approximately 700 U.S.
dollars per day in transportation and disposal costs. Additionally, the
compost produced by vermiculture can be sold for 40 U.S. dollars per
kilogram (OECD LEED Programme 2014).This new system operates at
a lower daily cost than the former one (when all waste was landfilled),
saving La Pintana money while generating social and environmental
benefits.
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11 RECYCLING
oeo®@@®o®o©©©©©
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Key Resources
What a Waste 2.0: A Global Snapshot of Solid
Waste Management to 2050 (Kaza et al. 2018)
Overview of Legal Framework for Inclusion of
Informal Recvclers in Brazil (Dias 2011)
Recycling and Disposal of Municipal Solid
Waste in Low and Middle-Income Countries
(UN-Habitat 2011)
A New Circular Vision for Electronics (WEF 2019)
ISO Standards for Recycling (ISO 2020)
Materials Recovery Facility Toolkit (ADB 2013)
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11
Recycling
95
Section 11
Recycling
Although recyclables account for only 16 percent of
solid waste generated in low-income countries, the
amount of waste generated and the fraction of waste
that is recyclable typically increase as economies
improve (Kaza et al. 2018). By collecting and
separating these materials out of the waste stream,
many cities have preserved landfill space, generated
revenue, and provided employment for residents.
Recycling not only saves money for cities but also
helps the environment by reducing the energy and
natural resources needed to create new products, and
helping prevent the flow of waste into waterbodies.
This section provides information on the benefits
of recycling, the most common types of recyclable
material, challenges of operating a successful
recycling program, and best practices for planning
and implementing recycling programs.
What Is Recycling?
Recycling refers to collecting and processing
materials that would otherwise be disposed of as
waste and turning them into new products. Cities
can benefit from recycling programs in the following
ways:
• Reducing waste disposal costs. Recycling
reduces the amount of waste sent to landfills,
thus extending the lifetime of those facilities;
and reducing the costs of siting, building, and
operating new facilities.
• Reducing environmental impacts. In many
developing countries, uncollected waste is
burned in the open to reduce its volume.
Reducing the amount of recyclable material that
is openly burned improves air quality and reduces
greenhouse gas emissions. In addition, increasing
recycling rates helps prevent waste from turning
into marine litter, especially in coastal areas.
• Reducing the use of virgin materials. Slowing
the extraction of virgin raw materials conserves
natural resources such as timber, water, and
minerals, while increasing economic security
by using a domestic source of readily available
materials.
• Strengthening economic growth and social
equity. Recycling creates employment and offers
the local population a source of income. Formal
recycling programs supported by some cities
have served as a way for informal sector workers
to become formal solid waste management staff,
improving their health, security, and working
conditions.
While many items can be recycled, the most common
include:
• Paper. Paper can be recycled to produce more
paper and paper-related products. In addition,
the fibers from recycled paper can be turned into
other marketable products such as tape, bandages,
or insulation. However, paper is not recyclable
indefinitely because its fibers shorten with each use.
• Aluminum. Aluminum is an ideal material because
it can be recycled multiple times without losing its
quality and typically has a higher economic value.
Producing recycled aluminum saves more than 90
percent of the energy associated with making new
aluminum (Aluminum Association 2019).
• Steel. Steel cans are the most common
household steel recycled; however, scrap steel
of all types can be recycled. Steel may be the
most recycled commodity worldwide and is used
by manufacturers to produce a wide variety of
products such as building products and vehicles.
Recycling steel cans can save between 60 percent
and 74 percent of the energy required to produce
new cans from raw materials (U.S. EPA 2016a).
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Recycling
96
• Plastics. In 2016, plastics represented 12
percent of solid waste worldwide (Kaza et al.
2018). Plastics can take hundreds to thousands
of years to decompose, which presents major
environmental and human health problems.
At the local level, some types of plastic (e.g.,
high-density polyethylene and polyethylene
terephthalate) can be recycled into a variety of
items, including plastic lumber, furniture, cement
blocks, asphalt for roads, and household goods
(e.g., containers, baskets, mats).
• Batteries. Alkaline batteries, which are used in
many common household applications (e.g.,
flashlights), are recycled in many facilities. Lead-
acid batteries contain heavy metals and should be
recycled in facilities with proper air pollution control
equipment. Lithium-ion batteries are becoming
an increasingly popular means of energy storage.
They can be recycled, but should be collected and
handled separately because they can explode under
pressure and cause fires. See the Identification of
Special Wastes section for more information.
• Glass. Glass is another material that maintains its
quality and does not wear out over time. Glass
bottles and jars can be remanufactured into
new glass containers. They can also be reused
as storage containers without undergoing the
remanufacturing process.
• Used motor oil. Used motor oil can be turned into
lubricants, processed into fuel oils, or used as raw
materials for other steps in the oil refining industry.
Motor oil recycles well because it does not wear
out; it only needs to be purified for reuse. Used
motor oil recycling is most effective when this
material is collected separately.
• Tires. Separately collected tires can be used
in many different applications depending on
the market.They can processed and used in
roadways as an alternative to gravel, baled for
civil engineering uses, or even shredded and
used as liners and covers for landfills. In some
countries, tires are used as fuel in incineration
facilities. It is important to understand the end
use before processing scrap tires. There are some
environmental concerns with this process, but tire-
derived fuel is more efficient than other types of
fossil fuels (U.S. EPA 2016e).
• Electronic waste (e-waste). E-waste generally
includes waste materials that include electrical
or electronic components, including phones,
computers, appliances, and other materials. Many
of these can be recycled if handled appropriately.
According to a 2019 report by the World Economic
Forum (WEF 2019), global e-waste is worth more
than $60 billion annually. Building systems to
recover materials from these products is a priority
area of focus for many countries.
The value of the recycled material is highly variable
and depends on the country and the market for it.
Additionally, data on the value of items that can be
recycled are not complete in many countries, making
the value difficult to estimate.
Challenges
Although recycling saves resources and energy, cities
often struggle to implement a successful recycling
program for a variety of reasons, including:
• Quality. Recyclables must meet specific quality
thresholds in order to be turned into new
products, which requires careful sorting and
treatment. For example, different types of plastics
have unique properties that make them more or
less suitable for recycling. If higher-quality plastics
are not separated from lower-quality plastics,
the entire quantity of plastics can only be used
to produce products for which the lower-quality
plastics are suitable. The International Organization
for Standardization (ISO, 2020) provides standards
for recycling materials. Following these standards
can help ensure quality.
• Contamination. Recyclables are considered
contaminated when non-recyclables have not
been completely separated out (e.g., if lithium-
ion batteries, which can cause fires if not handled
separately, are left in electronics). Recyclables
can also become contaminated when items are
not cleaned properly (e.g., food residue is still
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Recycling
97
In 1997, Tunisia launched the Eco-Lef recycling program to address the country's plastic waste problem. A major component of
the program is its extended producer responsibility principle in which packaging producers are responsible for the treatment
and disposal of post-consumer products. Extended producer responsibility helps create a financially sustainable system
that encourages informal sector workers to collect recyclable materials and deliver them to Eco-Lef collection centers. Waste
collectors are paid more for bringing items to an Eco-Lef collection center. Prices for plastics at a center are approximately 200
dinars more per ton than in a traditional marketplace (Kaza et al. 2018). When the Eco-Lef program was nationally implemented,
individual cities have seen job growth, increased incorporation of the informal sector, and reduced plastic waste.
on the item when it enters the recycling stream)
or through the dispersion of additives such as
phthalate. Contamination often leads to an entire
batch of recyclables being sent to a landfill instead
of being recycled. Contamination from non-
recyclable materials may also cause machinery
used in the recycling process to malfunction.
• Volatile markets. The demand for recyclables can
shift unpredictably, resulting in price fluctuations.
In some instances, sudden drops in material
prices can make operating recycling facilities
unsustainable. In such cases, recyclables may end
up being disposed of in landfills.
• High operating costs. Recycling operations
can involve high costs for labor and material
transportation. In locations where these costs are
high, recycling lower-value materials is often not
profitable.
• Financing for capital investments. As with any
infrastructure projects, building recycling facilities
typically requires external financing. For more
information on financing waste sector projects,
including using extended producer responsibility
schemes to offset recycling costs, see the Economic
Considerations section.
• Lack of processing facilities. Infrastructure can
be a major barrier to implementing recycling
programs. Many cities are not equipped with
material recovery facilities (MRFs), or there may
be a lack of industries or markets to turn recycled
materials into products.
• Lack of appropriate technology. Some items
cannot be recycled without advanced technology
(e.g., single-use plastics). If these items enter the
recycled material stream, they can get caught in
machinery and damage the sorting equipment.
These items often end up in landfills or as marine
litter.
• Environmental and health concerns.
Transportation and processing of recyclable
materials can lead to increased air pollution.
Recycling can also lead to increased water
use to ensure items are not contaminated.
Some materials are very dangerous when not
appropriately handled (e.g., lithium-ion batteries
can explode and cause fires). These environmental
impacts need to be weighed against the
environmental gains of recycling.
• Incorporation of the informal sector. It It is not
always easy to incorporate the informal sector
since it often displaces intermediaries who have
long been in the business of recycling. Cities also
have limited budgets and may not be able to
incorporate the informal sector into their payrolls.
See the Informal Sector Recycling section for
information on engaging with the informal sector.
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Best Practices
This section identifies best practices for planning
and implementing recycling programs, including
planning, collecting, separating, processing, sorting,
and selling recyclable materials for remanufacturing.
Strategic Planning
Many cities have found it helpful to establish a formal
recycling plan or program; for examples, see the
Municipal Solid Waste Knowledge Platform: Cities [CCAC
Undated(a)]. Recycling plans typically establish how
the city will meet their recycling objectives through
the adoption and implementation of various policies,
programs, and projects. While there are upfront
costs for establishing a recycling program, cities can
potentially save money overall by reducing the costs
of collecting and transporting materials; and reducing
the need for larger, new landfills or incineration
facilities. Steps for establishing a formal recycling plan
include:
1. Understanding the recycling stream. Recycling
plans need to be based on the type of material
generated and collected, and will therefore
depend on waste characterization, as described
in the Waste Characterization section.
2. Conducting market research. Cities have found
it useful to collect and analyze data on the size
of the local market for recyclable materials. Key
considerations include how far away the nearest
recycler or remanufacturing facility is located,
who would bear the costs of transporting
materials to that facility, and the volatility of
market prices for different materials.
3. Enacting supporting policies. Local policies,
such as mandatory separation rules, can help
drive recycling efforts.These policies can also
help reduce the risk of contamination of the
recycling stream. For more information on
policies that cities can enact to promote waste
stream segregation, see the Separation, Collection,
and Transportation section.
4. Engaging stakeholders. Communications and
outreach are critical components of effective
recycling programs, as they help increase public
participation in segregating recyclables at the
household level, reduce the risk of contamination
in the recycling stream, and can help boost
recycling rates. For more information on stakeholder
engagement strategies, see the Stakeholder
Engagement section. See Exhibit 11.3 for a case
study on engaging independent recyclers.
For more information on establishing recycling
programs, see UN-Habitat's (2011) guide, Recycling
and Disposal of Municipal Solid Waste in Low and
Middle-Income Countries.
Collecting and Separating
Recyclable materials can be collected and
separated by generators, collectors, or via dedicated
communal bins (see the Separation, Collection, and
Transportation section). Recyclables separated by
generators tend to be higher quality than recyclables
separated from mixed waste; however, separation at
Questions for Decision-Makers
What are the city's objectives for establishing a
recycling program? Is it to divert waste from landfills,
prevent marine litter, or promote economic growth?
How can the city ensure clean, high-quality streams of
recyclables with little contamination?
What role can the informal sector play in separating
and processing recyclables?
Are there private sector partners the city can engage
(e.g., firms that have corporate social responsibility or
extended producer responsibility targets)?
What are the best methods of communicating with
stakeholders about recycling efforts?
What is the market for recyclable materials? How would
the city adapt to drops in material prices?
Is there existing infrastructure that
can be used to facilitate recycling
(e.g., unused spaces that can be
adapted to serve as recycling facilities)?
Is there adequate labor available to operate recycling
facilities in a cost-effective
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Recycling
99
Brazil's National
Solid Waste Policy
the home or a business requires diligent effort on the
part of generators. Communications and outreach
are therefore essential factors in successful recycling
collection programs, especially if a city is trying to
encourage generators to separate recyclables. See the
Stakeholder Engagement section for more information
on stakeholder engagement strategies.
Communal bins are used in many cities. Cities have
found it important to conduct outreach and provide
clear instructions regarding what can be recycled and
in what bin, which helps avoid contamination. See
the Separation, Collection, and Transportation section
for more information on communal bins.
Separation of recyclables is often performed by
informal sector workers outside homes, at transfer
stations, and at disposal sites. Incorporating informal
sector workers into the formal collection process
provides them with employment benefits while
utilizing their experience. For detailed information
on collection and separation, and incorporating
the informal sector workers, see the Separation,
Collection, and Transportation section.
Processing and Sorting
After collection and separation, recyclable materials
are transported to a processing facility. At this facility,
recyclables are sorted according to material type,
cleaned of contaminants, and prepared for transport
to a milling facility to break down the material or to a
manufacturing facility if no further processing is needed.
MRFs are specifically designed to sort and recover
recyclable materials. They can be located at a transfer
facility or a standalone location. MRFs employ a
combination of technologies to sort recyclables.
Common technologies include rotating-cylindrical
screens that separate materials according to size,
overhead magnets to collect items containing iron or
steel, and conveyor belts that move materials slowly
past teams of workers who remove recyclable items.
Although high-technology MRFs are not common in
developing countries, many cities use smaller-scale
facilities to coordinate the separation of recyclable
materials by using lower-technology solutions, such as
hand sorting (see Exhibit 11.1).
Some MRFs that process recyclables use intermediaries
who buy recyclables from informal sector workers
and sort, clean, and package them before sending
them to the facility. Informal sector workers often
The government of Brazil passed a law in August 2010 to establish the
Brazilian National Policy on Solid Waste. This legislation aims to better
integrate and involve informal sector workers in the recycling process, and
to provide incentives for local agencies to develop organizations for informal
sector workers. Through the creation of a solid waste plan, Brazil aims to
close and recover dumping sites, which will also provide social and economic
benefits to informal sector workers. The law requires waste management
services to prioritize the recruitment, organization, and functionality of
informal sector workers.
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Recycling
100
have arrangements to sell recyclables to middlemen
in exchange for some item or service (e.g., an
intermediary lending the worker a cart).
Exposure to dust and other contaminants is a
concern for workers at MRFs and other recycling
facilities, so cities have found it important to have
proper ventilation in the facility and provide personal
protection equipment (e.g., dust masks, gloves) for
workers.
Selling Materials for Remanufacturing
After all necessary processing has been completed,
recyclables are made into new products at a recycling
plant or other facility, such as a paper mill or bottle
manufacturing facility. While cities typically do not
remanufacture products, they can play a role in
helping to ensure that the quality of the materials
meet the standards of remanufacturers. Exhibit 11.2
provides an example of how some cities are using
waste banks to coordinate efforts to sell recyclables.
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EXHIBIT 11.2 CASE STUDY
Using Waste Banks to Process Recyclables in Indonesia
In Indonesia, many cities have adopted the "waste bank" model to organize their recycling efforts. Waste banks are
decentralized, small-scale waste processing facilities where local residents can bring their recyclable materials and
receive payment based on materials'daily market value. Residents who choose to participate are typically given a
"bankbook"that is used to record "deposits." Participants can save their earnings at the bank or cash them out.
Waste bank staff- who are typically local residents - receive, separate, and bundle recyclable materials to be
sold to recyclers. At some waste banks, staff use processing equipment to turn the recyclable materials into new
products. For example, at one waste bank in Jakarta, staff operate shredding equipment to turn plastic bottles into
flakes that are sold to recyclers at a higher price than intact bottles (see photograph above). Many waste banks also
employ staff who turn recyclable materials into crafts for sale.
The waste bank model in Indonesia has grown in popularity in recent years, especially in response to the growing
awareness about the benefits of increased recycling rates for preventing marine litter. As of 2018, more than 2,800
local waste banks were operating in the country. Many of these banks are supported by private companies, such as
Unilever.
sanora
For more information
see Unilever Indonesia's
Environment Proaram website
(Uniiever, Undated)
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Recycling
EXHIBIT 11.3 CASE STUDY _(Q
Independent Recyders in Ho Chi Minh City, Vietnam
Independent waste collectors play an important role in Ho Chi Minh City's solid waste management system by
collecting recyclablesfrom practically inaccessible neighborhoods.Their work reduces the quantity of recyclables
in landfills and decreases the cost of waste collection for the municipal government. Despite these environmental
and economic benefits, independent waste collectors still lack necessary occupational health gear.
The United States Agency for International Development partnered with the Environnement et Developpement
du Tiers-Monde to strengthen Ho Chi Minh's solid waste management system by supporting independent waste
collectors. They provided training to existing collector cooperatives and created a network of cooperatives to more
effectively advocate for higher wages, protective health gear, access to health insurance, and city acceptance of
motorized tricycles used in collection.
Since the program began, the cooperative network has advocated on
behalf of 1,561 independent waste collectors. The program hasalsoseen
increases (from 0 to 22 percent) of women in cooperative leadership
roles, in health care (815 workers gained better access), and occupational
protective gear (1,200 workers were provided gear); and awareness-
raising activities (8,700 community members participated). Additionally,
independent waste collectors' monthly wages increased by about 65
percent through a $1 increase in fees paid by households.
~
To learn more, see the United^
States Agency for International
Development's case study on
Reducing Mismanaged Plastic
Waste Through Healthier Waste
Entrepreneurs (USAID 2019b)
y
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Informal Sector Recycling
The informal recycling sector exists in most cities
in developing countries. It consists of individuals,
groups, and small businesses that perform peripheral
collection and sale of recyclables and reusable
materials. The sector may fill a gap where disposal,
collection, or segregation options are lacking. Informal
sector workers often operate in unsafe conditions,
without employment benefits accorded to those
in formal employment, and experience income
disparity. Entire families, including young children,
may participate in recycling activities and depend on
it as a sole source of income. Informal sector workers
are often marginalized by society and may be referred
to by unfavorable terms, including "scavengers,""rag
pickers,"and "waste pickers."
How Does the Informal Recycling
Sector Work?
Informal recycling workers earn income by selling
the recyclables they collect to a network of dealers
and industries (Wilson et al. 2009, Aparcana 2017). In
some cases, workers may sell to other informal sector
workers that reuse the material to be part of another
process or product (e.g., scavenged parts to repair
equipment). Recycling by informal sector workers
happens at multiple locations:
• Households. Informal sector workers may have
regular routes where they collect or purchase
recyclables (e.g., paper, metal, clothing) from
residents. This practice is more common where
collection by the local authorities is infrequent
or irregular; the informal sector plays the role of
waste collector.
• Community collection bins and transfer
stations. In the absence of a formal recycling
program, community collection bins and transfer
stations are a rich source of material for informal
recycling workers.
• Dumpsites. It is common for informal recycling
sector workers to recover material directly from
dumpsites. Unlike sanitary landfills, dumpsites in
developing countries often lack fencing or walls
to prevent entry.
What Risks are Informal Sector
Workers Exposed to?
Informal recycling sector workers are exposed to
numerous risks that impact their health, wellbeing,
and livelihoods.These risks include dangerous
working conditions that can lead to physical injury,
and exposure to toxins and other materials that
can cause chronic illness. In addition, informal
sector workers are often exploited because of their
willingness to work for low pay, which exacerbates
their existing socioeconomic vulnerability. Risks
include:
• Dangerous working conditions. Informal
recycling sector workers rarely have personal
protective equipment such as gloves, masks, or
proper footwear. Workers are exposed to sharp
objects like metal and glass, hazardous wastes,
or even medical wastes. Working at dumpsites
is particularly dangerous when the waste in not
properly compacted and can shift and cause
slope failures, akin to avalanches of waste. There
are documented incidences of informal sector
workers perishing in slope failures. Informal
sector workers are often in close proximity to
large equipment (e.g., excavators and bulldozers),
and are at risk of injury when the operators of
those machines do not see them (Exhibit 11.4).
• Fires. Spontaneous fires may occur at dumpsites
due the presence of methane from decomposing
Exhibit 11.4. Informal Sector Workers in Close
Proximity to an Excavator in Addis Ababa, Ethiopia
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Recycling
104
organic matter. More often, waste is set on fire
by members of the informal recycling sector to
recover high-value recyclables such as metals.
Fires are associated with both human health and
environmental impacts.
• Health impacts. In addition to immediate
physical harm from dangerous working
conditions and fires, informal sector workers are
exposed to disease vectors (e.g., rodents, insects),
human health pathogens, and pollutants. Air
pollution, such as particulate emissions from
open burning of waste and landfill fires, affects
the health of workers and neighboring residents.
• Exploitation. The informal sector workers lack the
protection afforded to the formal sector workers
by rules and regulations, and are often exploited
by middlemen who buy recyclables from them.
• Price variation. The market for recyclables
is volatile. Price swings contribute to the
vulnerability of workers, many which already face
extreme poverty.
What are the Advantages of Incorporating the
Informal Recycling Sector?
In addition to reducing the risks that informal sector
workers are exposed to (see previous section),
cities can benefit from incorporating these workers.
Bringing informal sector workers into formal
employment takes advantage of their experience,
improves their working conditions, and improves a
city's employment statistics. Key advantages include:
• Technological advantages. Informal sector
workers often introduce new and innovative
technologies, such as developing phone
applications for on-demand recyclables pickup.
• Environmental advantages. Informal sector
workers achieve high recovery rates because
collection is vital for their livelihoods.These
increased recovery rates keep waste out of
waterbodies and other critical habitats.
• Economic advantages. The informal
recycling sector converts waste into tradeable
commodities, forms new trading networks and
businesses, and generates employment.
• Social advantages. Informal waste collectors'
exposure to hazards are lessened when
integrated into the formal system. Local
employment figures are also improved by
bringing them into the formal sector. In some
places, informal sector workers receive education
and training benefits as part of their integration
into the formal recycling system.
Best Practices
There are a number of best practices to integrate the
informal recycling sector and affiliated organizations
into the formal waste management system, including:
• Collect information. Cities can collect
information on informal sector workers'
demographics, resources, organization, and
practices to help inform decisions about how best
to engage with these individuals.
• Conduct inclusive outreach. It is a good
practice to involve and engage informal recycling
workers in solid waste management planning
and activities. Such engagement can help to
identify solutions, generate buy-in, and ideally
incorporate informal recycling sector workers
into the formal workforce to preserve and
improve their livelihoods. In addition, in many
cities the informal sector brings long-established
and elaborate networks of collectors, sorters,
transporters, brokers, processors, and, in some
cases, end markets for recyclables. Cities that
proactively engage with the informal sector can
collaboratively develop structures for working
together to formalize recycling activities,
while minimizing disruption to these pre-
existing networks. The principles of stakeholder
engagement are described in the Stakeholder
Engagement section.
• Create policies. Policies can be developed and
implemented at local and national levels to
integrate the informal sector. Brazil and India
have implemented national policies to require
local government agencies to incorporate the
informal sector in their waste collection and
recycling activities.
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105
•- r" •
CASE IN POINT
GSMS:
Incorporating the Informal
Sector in Solid Waste
Management Activities in
Dakar, Senegal
The Mbeubeuss dumpsite in Dakar is the largest open-air waste dumping site in West Africa and
has thousands of informal waste collectors (ILO 2019). Bokk Diom, the association of informal
sector workers at Mbeubeuss, has worked to increase their membership since 2018. In addition,
the organization established a Women's Bureau of Bokk Diom that has increased women's
participation to 65.6 percent of all membership (WIEGO 2019). Furthermore, the group has
focused their training sessions on safety and environmental impacts.
A key factor in Bokk Diom's success is their relationships with state, national, and municipal
public officials, which leads to regular interactions between the informal sector workers and
decision-makers. The group has also formed partnerships with national organizations such as
Zero Waste Senegal.
• Offer training. Members of the informal recycling
sector may require training to successfully
integrate in the formal waste management
sector. For example, they may benefit from health
and safety training to improve their workplace
behaviors, such as knowing what do to if they
come into contact with medical waste. Living on
the margins of society, members of the informal
sector may not feel empowered to negotiate with
waste generators, government agencies, or the
middlemen who buy their recyclables. Therefore,
training is critical to increase their negotiating
power.
• Engage cooperatives. Informal sector workers
in some cities have formed cooperatives and
entered into contracts with the local government
to collect waste. In India, SWaCH, a wholly
owned workers'cooperative, conducts door-to-
door collection under a contract with the Rune
Municipal Corporation.
• Involve nongovernmental organizations
(NGOs). Since the informal recycling sector
is often ill-equipped to organize for better
working conditions, NGOs often play a key
role in assisting them. NGOs assist the informal
working sector in developing microenterprises
and negotiating with local governments for
employment and contracts. Women in Informal
Employment: Globalizing and Organizing and
The Global Alliance of Waste Pickers are two such
organizations.
• Identify entrepreneurs. In some regions, the
informal recycling sector is being incorporated
into the formal waste management sector
through innovative and entrepreneurial means
(see, for example, Exhibit 11.5). Entrepreneurs are
starting recycling businesses by developing user-
friendly online portals and phone applications
for on-demand recyclables pickup by informal
sector workers. One such example is Kabadiwala,
an online pickup service, which is currently in five
areas of India.
• Consider government employment. Many cities
in developing countries strive for comprehensive
waste collection coverage. Some cities seek to
achieve higher coverage by increasing their
workforce, including integrating members of the
informal recycling sector.
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EXHIBIT 11.5 CASE STUDY
Incorporating Informal Sector Workers in Solid Waste
Management Activities in Bangalore, India
In recent years the City of Bangalore has focused on micro-levei planning for waste collection and treatment to
reduce their costs and improve efficiency. Incorporating informal sector workers into the solid waste management
system has been a key component of this effort. Currently, more than 15,000 informal sector workers handle waste
in the city. These workers provide skilled labor that significantly reduces the city's solid waste management costs.
Since 2016 the city has formalized their relationship with the informal sector. The city provides informal sector
workers with identification cards, offers certification courses, and has formed memoranda of understanding with
groups of informal sector workers. One added benefit of working with the informal sector is that the city has
reduced their dependence on traditional contractors, who sometimes overcharge for services and can be difficult
to manage.
To learn more about these activities
see Chengappa's (2013) case stud
on oraanizina the informal sector
in Benaaluru and the Hasiru Dala
website (Hasiru Dala 2015).
Groups of informal sector workers are typically based at transfer stations.
Workers at some of these centers provide door-to-door collection, and then
receive financial support from the city.
Informal sector workers in Bangalore have found innovative ways to
integrate technological solutions into their work. Some have developed
phone applications to monitor when their customers'waste bins have been
emptied, how much waste was collected, and how well it is segregated (a
requirement in India). This review allows informal sector workers to rate
their customers'performance; higher ratings can lead to lower collection
service fees.
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12 DUMPSITE
MANAGEMENT
®^^0 @00
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Key Resources
Closing Dumpsites Knowledge Base (ISWA
2017a)
Municipal Solid Waste Management in
Developing Countries (Coursera 2019)
Closure and Rehabilitation of Open Dumps
(CCAC 2014)
Waste Atlas (Database of Global Waste
Management Sites) (D-WASTE 2020)
Improving Solid Waste Disposal in San Cristobal
Municipality, Dominican Republic (U.S. EPA
2018c)
Municipal Solid Waste Knowledge Platform
[CCAC Undated (a)]
A Roadmap for Closing Waste Dumpsites: The
World's Most Polluted Places (ISWA 2016)
Training Module: Closing an Open Dumpsite
and Shifting from Open Dumping to Controlled
Dumping and to Sanitary Land Filling (UNEP
2005b)
Waste Collection: A Report (Kogler, 2007)
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Dumpsite Management
109
Section 12
Dumpsite Management
Open dumpsites pose a significant risk to public
health and the environment. Transitioning from open
dumpsites to sanitary landfills (which are described in
the Sanitary Landfills section) should be the ultimate
goal for most cities and urban centers. However, that
transition is typically complex and expensive, and
requires extensive long-term planning. A phased
transition that focuses on improving operations at
existing dumpsites using low-cost techniques while
developing sanitary landfills, and then eventually
closing them and transitioning over to sanitary
landfills, is a best practice in most situations.
This section describes several key benefits of
managing open dumpsites and provides an overview
of best practices for beginning the transition to
sanitary landfills.
Why Focus on Open Dumpsites?
Without proper management measures, open
dumpsites can cause a range of environmental and
health impacts, including the following (see Exhibit 12.1);
• Air pollution. Open dumpsites emit methane,
a precursor to ground-level ozone. Fires at
open dumpsites release particulate matter and
dioxins into the air. In addition to impacts on
human health, these emissions also contribute
to global and regional climate changes [for
more information, see the Climate and Clean Air
Coalition Municipal Solid Waste initiative's website
(CCAC Undated(e)].
I For more information
on the distinction between open^,
dumpsites and landfills, see Table 2-1 ^
in Global Methane Initiative's International
Best Practices Guide 4
for Landfill Gas Energy Jr
Projects (GMI 2012).
An open dumpsite is an uncontrolled system that was not
established with an engineering design.
A controlled dumpsite is a disposal site that was not established
with an engineering design, but where some management practices
and infrastructure are in place (e.g., leachate collection and soil cover
application).
A sanitary landfill is differentiated from a dumpsite in that the
landfill is an engineered design, consisting of a variety of systems for
controlling the impacts of land disposal on human health, safety, and
the environment.
KEY POINT
Open Dumpsites,
Controlled Dumpsites,
and Sanitary Landfills
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12
Dumpsite Management
110
Exhibit 12.1. Impacts of Open Dumpsites on Health and the Environment
Particulate emissions
(including black carbon)
A/lethane emissions
(contributing to 03 formation)
Nearby populations
Surface and
subsurface fires
Unstable slope
Odors
\ /
Leachate migration
Contaminated groundwater
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12
Dumpsite Management
111
• Risk of fires. Open dumpsites have higher risks of
spontaneous fires (both surface and subsurface)
because more of the waste is exposed to oxygen.
In some locations, informal recyclers burn waste
to recover metals, which increases the likelihood
of surface fires.
• Groundwater and surface water
contamination. Rainwater that comes into
contact with waste in open dumpsites quickly
filters through waste and draws out chemicals
that then leaches into soil and water resources.
• Spreading disease. Open dumpsites can attract
insects, vermin, and other potential carriers of
diseases that can infect workers and nearby
populations.
• Odors. Foul odors from decomposing waste in
open dumpsites can impact the aesthetics of
areas near the site, diminishing property values
and quality of life.
• Slope failures. Open dumpsites typically have
unstable surfaces, which can result in slope
failures; such failures can physically impact
workers and nearby homes, and potentially result
in fatal casualties.
Best Practices
This section describes best practices for beginning
the transition to sanitary landfills, including improving
operations at open dumps, converting open dumpsites
to controlled dumpsites, and closing dumpsites.
Improving Operations at Open Dumps
Simple upgrades can be made with little capital
investment and minimal ongoing costs to reduce
the environmental and health impacts of open
dumps. Examples include:
• Apply daily cover. Applying daily cover material
(e.g., dirt or compost) can reduce the immediate
health and disease threats posed by exposed
waste (GMI 2012).
• Construct drainage. Constructing drains around
the perimeter of the dumpsite to catch runoff and
leachate (USAID 2018).
• Minimize leaching. Compacting and grading soil
periodically (every two months is often sufficient)
helps minimize leaching through soil.This practice
causes rainwater to run off into perimeter drains
instead of soaking into the soil. Manual labor or
heavy equipment may be used (renting heavy
equipment is often the least-expensive option)
(USAID 2018).
• Implement practices that are protective of
human health. Protecting the health of informal
sector and other workers by providing hygiene
training, soap, and water.To minimize the risk
of physical injury from sharp objects in dumps,
workers should be provided with protective
clothing, footwear, and equipment (USAID 2018).
• Conduct regular monitoring. Regularly testing
groundwater for contaminants, including
bacteria, heavy metals, and toxic organic
chemicals (USAID 2018).
• Cease disposal in unstable locations. Continuing
to dump waste in locations that are physically
unstable can increase the risk of a slope failure.
Cities can use excavators and other equipment to
sculpt the working face of the site to make slopes
more gradual so that they are more stable (U.S. EPA
2017a).
• Install fencing. Fences can help prevent waste
from migrating offsite in windy conditions. Fencing
can also help regulate who has access to the site,
which can help reduce the risk of accidental fires
and exposure to hazardous substances.
Converting Open Dumpsites to Controlled
Dumpsites
In addition to implementing initial low-cost
improvements at open dumps, many cities have
upgraded open dumpsites by converting them to
controlled dumps.This alteration typically involves
the following steps:
• Conducting a site assessment. A site assessment
will help determine whether the location of the
existing open dumpsite is suitable for conversion
to a controlled dumpsite or for final closure. An
alternative disposal site is needed if conversion is
not practical (Coursera 2019).
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Until recently, Oman's waste was deposited into a diffuse patchwork of 317 open durnpsites and
uncontrolled landfills, which posed environmental and public health hazards to those living
near the durnpsites.
In 2009, the government issued a royal decree in support of revitalizing Oman's solid waste
management infrastructure. In less than five years, the country's waste management authority
successfully closed approximately 90 percent of the durnpsites in Oman, following a systematic
process.
Dumpsite closures were prioritized using environmental and public health risk analysis criteria.
Those durnpsites with the greatest potential for ongoing contamination, open burning, or
safety concerns were pushed to the top of the closure list to minimize their adverse impacts.
Prioritization also considered the closure timeline and associated costs.
Dumpsite Management
• Preparing the existing site. Transforming an open
dumpsite to a controlled dumpsite involves several
steps, including leveling and compacting existing
waste and constructing drainage canals/ditches,
among other preparation activities (Coursera 2019).
Operational procedures include limiting the working
face area; covering exposed wastes with soil, sand,
or clay; and installing a litter barrier (U.S. EPA 2002a).
In rare cases when there is a minimal amount of
waste in the dumpsite, the waste can be temporarily
removed while a new liner and leachate collection
system are installed [UNEP 2005(b)], It is also a best
practice for preparation activities to account for
future onsite recycling by informal sector workers.
Many cities have discontinued recycling activities
at their durnpsites and instead have informal sector
workers perform recycling activities at a more formal
recycling effort offsite.
• Monitoring the facility regularly for waste volume
and composition, methane gas production, surface
water and groundwater conditions, and condition
of drainage systems is a best practice (USAID
2018). Controlled durnpsites, if not monitored
carefully, may still have problems that will need to
be addressed, such as slope failures that occur as
waste settles. Exhibit 12.2 presents a case study of
a controlled dumpsite rehabilitation project in East
Delhi, India.
• Sealing and covering the dumpsite in stages as its
capacity to receive waste is exhausted (USAID 2018).
• Maintaining scheduled monitoring until sampling
indicates it is no longer necessary - at least 10 years
but possibly 30 years or more (USAID 2018).
Closing Durnpsites
Closing an open dumpsite does not simply mean
abandoning it. Decomposition byproducts are
produced long after closure; therefore, long-term
planning and maintenance are necessary to minimize
risks to cities post-closure (Coursera 2019). Best
practices for closing open and controlled durnpsites
include:
• Conducting outreach. Cities have found it
helpful to identify the roles and responsibilities
of those affected by the closure, such as the
operator, residents, and other stakeholders.
Engaging in discussions with these groups can
help local authorities and decision-makers collect
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Dumpsite Management
113
KEY POINT
Closing Dumpsites
The International Solid Waste Association has established a campaign to close the world's 50 largest dumpsites. The
IISWA website (ISWA 2017b) includes a range of resources to assist cities in planning dumpsite closure projects.
information on potential obstacles and gain
buy-in. For example, it may be advisable to reach
out to informal sector workers who depend on
access to materials at open dumpsites for their
livelihood; they can be formally included in plans
to close the dumpsite and employed as workers
at planned new facilities. For more information
on stakeholder engagement strategies, see the
Stakeholder Engagement section.
Developing a closure plan. A closure plan
details the activities that should occur during
the closure of the site. Elements of the plan
can include the stabilization of steep slopes to
prevent erosion hazards, the implementation
of leachate and gas management systems, and
the design of the final cover. The plan should
also consider measures to prevent future illegal
dumping, unauthorized access at the closed site,
relocation of informal settlers (if any), and the
installation of monitoring wells (Coursera 2019).
Capital expenditures for closure include the
cost of final cover materials, drainage, leachate
and gas management systems, and relocation
of informal settlers, among others. Operational
expenses generally include equipment and
manpower requirements (Coursera 2019).
Developing a post-closure management plan.
A dumpsite will continue producing leachate
and gas long after the site stops receiving waste.
In addition, the site's final cover may erode
over time due to precipitation and exposure
to the elements. A well-designed post-closure
plan allows for continued maintenance and
monitoring of the site for at least 10 years
(Coursera 2019).
Considering second uses of the closed
dumpsite. A properly closed dumpsite can
later be used for another purpose, such as a
recreational area or public green space, or for
construction purposes. It is important to ensure
that the risks of methane emissions and leachate
contamination have been eliminated before
public use of the space.
Being prepared for remediation and cleanup
activities, as necessary. Problems such as
leachate leakage, waste slippage and exposure,
fires, and explosions often result from improper
or inadequate closure and post-closure
procedures. Solutions may include excavation
of soil or more aggressive cleanup technologies
(Coursera 2019).
Questions for Decision-Makers
What low-cost steps can the city take immediately
to reduce the health and environmental impacts of
an open dump?
Should the dumpsite be closed or converted? If
closed, is the site to be remediated?
If a dumpsite is to be remediated, what guidelines
should the city follow so as to minimize impacts on
the environment and
public health?
What standards are achievable at the dumpsite?
Should the city offer a waste transfer facility
permanently or temporarily at a closed site?
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Dumpsite Management
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EXHIBIT 12.2 CASE STUDY
Dumpsite Rehabilitation in East Delhi, India
The Ghazipur landfill in East Delhi opened in 1984. Beginning in the early 2000s, the site began to reach its
maximum design capacity. However, due to the lack of a substitute disposal site, waste continued to be disposed
of at the site.
On September 1, 2017, a portion of the landfill's slope failed. Waste from the landfill slid 110 meters across an area
adjacent to the landfill, killing two people and injuring five more. This incident spurred a renewed urgency to
improve operations and management at the landfill.
In response, the East Delhi Municipal Corporation worked with the
Climate and Clean Air Coalition Municipal Solid Waste Initiative and
the United States Environmental Protection Agency to conduct a
detailed assessment of the landfill structure and operational practices
that contributed to the slope's failure. The assessment provides
recommendations for (1) reducing the risk of future slope failure, (2)
mitigating the risk of landfill fires, and (3) estimating additional capacity
at the landfill until an alternative is ready.
r To learn more about these ^
activities, see the United States
Environmental Protection Agency's
report on the Ghaziour landfill
rehabilitation program (U.S. EPA
k 2017a). A
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13 SANITARY
LANDFILLS
m; * -r,
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Key Resources
Global Methane Initiative: Bioaas Tools and
Resources (GMI 2020)
Municipal Solid Waste Knowledge Platform
[CCAC Undated(a)l)
Sector Environmental Guideline Solid Waste
(USAID 2018)
International Guidelines for Landfill Evaluation
(ISWA2011)
Landfill Operational Guidelines. 2nd Edition
(I SWA 2010)
Improving Solid Waste Disposal in San
Cristobal Municipality. Dominican Republic
(U.S. EPA 2017b)
Sanitary Landfill Design and Siting Criteria
(Cointreau 2004)
International Best Practices Guide for Landfill
Gas Energy Projects (GMI 2012)
Waste Atlas (Database of Global Waste
Management Sites) (D-WASTE 2020)
Government of India Municipal Solid Waste
Management Manual - Chapter 4.5: Municipal
Sanitary Landfills (CPHEEQ 2016)
© © © © © © O © © © ©
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Sanitary Landfills
117
Section 13
Sanitary Landfills
Sanitary landfills are designed to control and mitigate
potential surface and groundwater contamination,
reduce threats to sanitation workers, mitigate air
pollutant emissions, and enable the collection of
landfill gas (LFG) as a potential energy source.
This section provides basic information on the key
features of sanitary landfills; and best practices for
planning, siting, designing, and operating them.
What Are Sanitary Landfills?
A modern sanitary landfill is a disposal site where
all of the following practices are systematically
implemented (Exhibit 13.1):
Use of liners and leachate and gas collection
systems to control or prevent adverse
environmental impacts and their subsequent
impact on public health and safety.
Disposal of waste into a targeted and clearly
defined working face.
Compaction of the wastes to conserve land
resources.
Application of cover material on a daily basis to
control the risk of hazards from exposed wastes.
Design and operation of the landfill to control for
and minimize human settlement in and close to
the landfill.
Groundwater monitoring to detect any potential
leaks in the liners.
A well-established approach in the long-term is to
implement all these practices in a systematic manner.
However, implementing all of these practices may
be technologically and economically challenging in
some developing countries. Therefore, the short-term
Exhibit 13.1. Cross-Section of a Typical, Properly Designed, Constructed, and Maintained Sanitary Landfill
Fence
Landfill gas
collection
Fence
Monitoring
wells
Cover
Waste
Bottom liner
Leachate collection
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Sanitary Landfills
118
(•
KEY POINT
Handling Special
Wastes
Some low-density materials (e.g., plastic film and foam) require
skillful handling and processing at the landfill to achieve
proper compaction and minimize litter. Hazardous waste may
require special handling due to its toxicity, corrosivity, or other
dangerous property (Savage et al. 1998). For more information
on handling special wastes, see the Waste Characterization
section.
goal is to implement as many of them to the greatest
extent possible under existing circumstances.The
most important goal is the prevention of negative
impacts on public health and the environment
(Savage et al. 1998).
Best Practices
This section highlights best practices for all aspects of
sanitary landfilling, including how to consider waste
composition, landfill costs, siting, design, operating
and managing the site, and closure and post-closure.
Waste Composition
The composition (type and quantity) of solid waste
buried in the landfill is an important determinant
of the types, quantities, and characteristics of the
byproducts emitted to the air and ground.These
emissions occur as a consequence of the processes
occurring within the landfill Designing sanitary
landfills to handle the quantity and types of waste
intended to be disposed of at the site is a well-
established approach (Savage et al. 1998).
Cities have found it important to consider the
following waste-related variables when planning
sanitary landfills:
Whether a city has quality data on the quantity
and composition of the waste to be disposed of
in the landfill, which is distinct from the overall
composition of the waste generated by the
population the city serves. During the planning
process, the city determines the rate of solid
waste flow into the disposal site, and identifies
and evaluates all factors that influence the flow-
over time (current and future rates) because the
landfill will operate for several years. The Waste
Characterization section discusses best practices
for waste stream characterization in greater
detail.
Current and potential future waste diversion
programs (e.g., for organic waste or recyclables),
and their impacts on waste quantities and types
disposed of at the site.
Whether the waste stream is likely to include
hazardous wastes or wastes that pose specific risks
when disposed of that should be treated separately
(e.g., medical wastes).These wastes should be
considered "unacceptable"at a sanitary landfill.
Landfill Costs
It is important to understand from the onset
the costs of designing, building, operating, and
monitoring a sanitary landfill during its operational,
closure, and post-closure life stages. Without a clear
understanding of these costs and how they will
be paid, cities face the risk of having to cancel the
landfill project before it is complete (e.g., due to
insufficient financing) or close the landfill after it is
built (e.g., if operations prove too costly). Cities also
need to reserve sufficient funding to cover the costs
of maintaining and monitoring a landfill after it has
been closed; inadequate post-closure maintenance
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Sanitary Landfills
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KEY POINT
Factors to Consider
When Determining
Landfill Costs
Characteristics and quantities of waste to be
disposed of
!n-place density of waste and the ratio of cover
material to solid waste
Availability of suitable soil for use as a cover and
liner materials
Purchasing and preparing the site, which could
include relocation of people and businesses
Ruggedness of the terrain and ease of access to the
site
Phased landfill construction
Regulatory requirements
LFG collection and utilization infrastructure
requirements
Leachate treatment system requirements
Post-closure maintenance and monitoring plans
can result in the site failing to contain the waste and
associated byproducts.
Challenges of Estimating Landfill Costs
The scarcity of reliable data on landfill costs is a
major challenge in many cities.Thus, conducting
an organized data collection effort is an important
first step in accurate cost estimation. In brief, this
process involves recording all applicable costs (e.g.,
cost elements such as site preparation), estimating
the magnitude of the cost for each element, and
calculating the total cost at scale. Section 18.8 in
the Guidance for Landfillina Waste in Developing
Countries (Savage et al. 1998) includes worksheets
on estimating annual costs. Although the models use
historical United States Environmental Protection
Agency data from the United States, the cost
estimation method is useful for general planning.
One method of estimating landfill costs is to examine
past and current landfill operations in another
jurisdiction near the proposed disposal area, and to
obtain or estimate the costs. It is important to take
both capital and operational costs into account.
Use of Diversion Programs
In some instances, leveraging waste diversion
programs can help mitigate the costs of building and
operating a landfill. For example, many cities have
used waste diversion programs to reduce the volume
of waste that needs to be disposed of, thus allowing
them to build a smaller landfill at lower costs or build
a landfill that will last longer. In general, higher costs
for landfilling can make diversion programs more
cost-effective. For example, recycling programs that
might be otherwise be too expensive to implement
might become more economical if the costs of
landfilling are high. For more information on the
management of waste before it reaches the landfill,
see the Organic Waste Management and Recycling
sections.
Options for Cost Recovery
Cities can recover the cost of operating a landfill by
collecting "tipping fees."Tipping fees are generally
charged according to the weight or volume of the
waste and the type of waste. More information on
cost estimates and recovery options can be found in
the Economic Considerations section.
Cities can also use LFG recovery and utilization
projects to offset the cost of landfill operations. In
these projects, LFG is collected and used to generate
electricity for direct combustion (e.g., in a boiler on-
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120
Exhibit 13.2. Ideal Geologic Characteristics for Siting a Landfill
Geological stability. Areas prone to geological hazards, such as active seismic zones, fault zones, floods, and
avalanches, are avoided.
Impermeable layer at the base of the landfill. Permeability describes the rate at which water passes through soil or
another substrate (e.g., locating the landfill in an area with clay soils - through which water cannot flow - will provide
ideal protection).
Distance from surface waterbodies. Locating the landfill far from surface waterbodies (e.g., more than 1,000 meters)
minimizes the potential forflooding at the landfill and contamination of the waterbodies.
Low hydraulic conductivity in the first aquifer located under the landfill to minimize the potential for contaminants to
move to a different aquifer.
Nearest aquifer under the base of the landfill is deep and not used for drinking purposes.
Unsaturated layer below the landfill base contains both air and water between the soil and rocks (e.g., more than 30
meters).
or offsite) or for other uses (e.g., transport fuel).These
uses of LFG reduce the need for cities to purchase
other sources of energy. For more information
on best practices for LFG energy projects, see the
Global Methane Initiative's (GMI's) International
Best Practices Guide for Landfill Gas Energy Projects
(GMI 2012).The initiative has also developed several
cost-free, Excel-based tools for modeling LFG (GMI
Undated(d)) in specific developing countries.
Site Selection
Several factors are important to consider when
selecting a site for a landfill, including geological and
non-geological factors.
Geological and hydrological elements
Geologic and hydrologic information can be used
to select areas that are more favorable to landfill
development, and to assist in designing the landfill
to minimize the potential for environmental
contamination. Exhibit 13.2 presents ideal geologic
and hydrologic characteristics for siting a landfill.
Non-geological considerations
Demographic and political considerations. Cities
should consider demographic and political factors,
such as boundaries, property ownership and use
rights, potential reactions from the local population,
and potential impacts to marginalized populations.
Potential landfill capacity. Sanitary landfills are
typically designed to accommodate many years
of waste disposal. Cities typically calculate the
desired volume (or capacity) of the landfill based
on the amount of waste generated per person per
year, population size, anticipated population and
economic growth, alternative waste treatment
processes, and the number of years the landfill is
intended to be in operation (U.S. EPA 2002a). More
information on estimating future waste can be found
in the Waste Characterization section.
Transportation distances. The farther a landfill site
is from the point where the waste is generated and
collected, the higher the costs of waste transport. If
the landfill is remote from the collection area, cities
have found transfer stations helpful for consolidating
waste from collection vehicles into a bulk transport
system. More information on transfer stations and
planning a route can be found in the Separation,
Collection, and Transportation section.
Questions for Decision-Makers
What geographic area should the site
serve and for how long?
What site selection criteria will be used?
What are the views of residents and
organizations with an interest in the site
location?
How will these views be accounted for in
the decision-making process?
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Sanitary Landfills
121
Landfill Gas Energy Projects
k (GMI2012). V
Sao Paulo, Brazil, generates approximately 15,000 metric tonnes of solid waste each day.
Much of this waste was disposed of at the city's Sao Joao Landfill from 1992 to 2008. At the
time of its closure, the facility had approximately 24 megagrams of waste in place and a
footprint of 70 hectares.
In 2006, Sao Paulo began plans to construct a LFG energy project to capture and use the
large quantities of LFG generated in the landfill. The project was completed in 2008. The
plant combusts LFG in 16 engines, each with a 1.54-megawatt capacity, and has a total
electricity production capacity of 22.4 megawatts. Three flares are used to combust LFG
that is not used to generate electricity.
Site Preparation
Physically preparing the terrain for the construction
of a sanitary landfill may involve the following
activities (Savage et al. 1998):
• Clearing and grubbing. It is best to remove
trees, brush, plants, rocks, and other matter that
may impede the operation of equipment or
hinder the performance of the landfill, including
any root systems that might impact the long-term
durability of the liner system.
• Preparing for drainage, erosion and
sedimentation control, and site access. Cities
typically construct roads, ditches, and other
physical features to enable drainage, erosion and
sedimentation control, and site access. These
features are needed for the duration of site
preparation activities and potentially as part of
the permanent landfill design.
• Excavating earth and stockpiling. The majority
of landfill sites require substantial excavation of
earth materials in preparation for the landfill. The
excavated materials can be used in subsequent
operations (i.e., as a cover material).
• Creating buffers. Buffers are areas of land
outside the boundary of the solid waste.
Creating a sizeable buffer zone improves public
acceptance of the landfill and its operation.
Landfill Design
Above ail, it is a best practice to design landfills to
protect human health and the environment. Specific
design criteria account for national or regional
requirements, but there are several common design
features:
• Bottom liner. Liners are used to prevent
leachate from entering groundwater by keeping
fluids within the landfill area. Liners are made
of relatively impermeable material such as
compacted soil or clay, synthetic materials, or a
composite of earthen and synthetic materials.
Well-compacted clay soil is most commonly
used because of its impermeable properties and
general availability (Savage et al. 1998).
• Leachate collection and treatment. In a
properly lined landfill, leachate accumulates
within the landfill. Keeping the amount of
leachate within the landfill to a minimum is
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Sanitary Landfills
122
SS*»o
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. \ i * ^'1 i&
KEY POINT
Key Steps in Collecting
and Treating Leachate
Identifying and selecting the type of liner to be
used (e.g., impermeable soil or clay layer)
Preparing a grading plan for the site, including
location of channels and pipeline for the
collection and removal of the leachate
Designing the facilities for the removal,
collection, and storage of the leachate
Selecting and designing the leachate treatment
system (Savage etal. 1998).
important because water pressure can push
leachate through a permeable liner or through
imperfections in the liner. Therefore, well-
designed landfills include equipment to collect
and divert the leachate from the landfill and treat
it. Perforated piping, for example, can be installed
to collect the leachate and divert it for treatment.
Treatment alternatives include (1) discharge to
a wastewater treatment system, (2) evaporation
of leachate stored in an evaporation pond, (3)
recirculation or recycling of leachate through
the landfill environment (which can increase LFG
generation and collection rates), and (4) onsite
treatment (Savage et al. 1998, U.S. EPA 2002a).
• Cover. A typical sanitary landfill has two forms
of cover: (1) a daily cover placed over the waste
on the working face at the close of each day's
operations; and (2) a final cover, or cap, which is
the material placed over the completed landfill.
The cover typically includes natural and synthetic
materials such as dirt, compost, shredded tires,
and geosynthetic membranes.
• LFG collection and energy recovery. LFG
collection and energy recovery are important
aspects of sanitary landfill operations. LFG is
generated as a byproduct of decomposition of
certain types of waste.
As illustrated in Exhibit 13.3, LFG collection systems
can help collect, move, and flare or productively
use this gas. Flaring the gas helps reduce the
risk of spontaneous fires and mitigates methane
emissions. LFG energy projects can be designed to
harness collected gas to generate electricity or for other
productive uses. The GMI International Best Practices
Guide for Landfill Gas Energy Projects (GMI 2012) includes
additional information on how to implement an LFG
Questions for Decision-Makers
Does the city's solid waste management
department have the skills to design the
site? If not, can these skills be obtained
from other parts of the city or from the
private sector
What standards will the city follow?
How will informal sector workers be
impacted, and how will the city mitigate
these impacts?
How will the facility collect and use LFG?
Are there nearby facilities that would use
captured LFG?
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Sanitary Landfills
123
Exhibit 13.3. Illustration of the Collection and Processing of LFG to Produce Methane for Multiple Uses (U.S.
EPA 2019c)
Collection
Methane Uses
Processing
Electricity
Landfill Gas
Well .
¦¦¦¦'iiu
null
Industrial/
Institutional
Blower/
Flare/
Treatment
Pipeline Gas
Arts and Crafts
Vehicle Fuel
energy project.The Climate and Clean Air Coalition
Municipal Solid Waste Initiative offers a LFG Project
Screening Tool (CCAC Undated(b)) to help cities evaluate
the feasibility of a potential LFG energy project.
• Groundwater monitoring. Monitoring is necessary
to determine groundwater quality at a facility and
to determine whether there has been a release of
contaminants through the base of the landfill. The
groundwater monitoring system consists of wells
placed at an appropriate location and depth for
taking water samples that are representative of
groundwater quality (U.S. EPA 1995).
• Site access. Building a fence around the site can
strictly control access to the landfill and prevent
injury, unauthorized waste picking, and illegal
dumping (U.S. EPA 2002a). It is important to
consider how restricting access to the site might
impact the livelihoods of individuals who make a
living recovering and selling recyclable materials.
Many cities are mitigating these impacts by
integrating informal sector workers into formal
collection or disposal operations (e.g., helping
them organize a cooperative and offering them
structured access at the landfill gates).
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Sanitary Landfills
124
Landfill Operation
Many cities have found it helpful to hire a trained
landfill manager to properly operate and manage the
site. Before any waste is disposed of at the landfill, the
manager develops a plan to serve as the operational
guide for the site. The plan typically specifies, in
detail, the site location where waste is to be placed,
how the site will be operated, how often and where
a soil cover will be used, and how environmental
problems (e.g., animals, litter, fires, gas, leachate) will
be addressed. Other key operational considerations
include waste compaction, application of daily cover,
leachate treatment and monitoring of leachate and
water quality, management and monitoring of landfill
emissions and gas, and application of the final cover
(Munawar and Fellner 2013).
Closure and Post-Closure Operations
When a landfill reaches maximum capacity, filling
operations cease, and the site is"capped"with a final
cover system. The period of time during which the
landfill is subsequently maintained and monitored is
referred to as the "post-closure period."The activities
listed below are broadly categorized into closure and
post-closure phases.
Closure of the landfill involves the following activities:
Cessation of waste delivery for disposal by burial
at the landfill
Preparation of the site to receive the final cover
system or cap
Installation of the final cover system
Re-examination of the leachate management
system to assess performance
Provisions for gas collection and control
Improvements or repairs to drainage systems,
erosion control features, access roads, etc.
Restoration of disturbed peripheral areas
Legal restrictions to prohibit the reuse of the
closed landfill area for certain types of activities.
Post-closure activities at the landfill include cover
system maintenance, leachate management, gas
management, erosion and sedimentation control,
surface water management, and site access and
security. In addition, post-closure activities should
also include environmental monitoring and special
provisions for future use of the site.
Closure and post-closure care are important activities
in the lifecycle of a landfill because they complete the
requirements for environmental management of the
facility. Generally, post-closure care should continue
until the solid waste has stabilized to a level at which
it is no longer hazardous to public health and safety
or to environmental quality.This stabilization process
can last several decades.
The study cited in the case study below (Exhibit 13.4)
is a valuable resource for understanding best
practices associated with converting a dumpsite to a
sanitary landfill.
Questions for Decision-Makers
Are there enough skilled personnel to
operate the new landfill site? What training
would they need, and where will that
training come from?
Should the city contract out the operation
to the private sector?
Is there enough money allocated for
operations for it to be done properly?
Are there additional revenue sources that
can help offset operations costs (e.g.,
tipping fees)?
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13
Sanitary Landfills
125
EXHIBIT 13.4 CASE STUDY
Developing a Roadmap for Transitioning to a Sanitary
Engineered Landfill in San Cristobal, Dominican Republic
San Cristobal is a city of approximately 250,000 inhabitants located 30 kilometers from Santo Domingo in the
Dominican Republic. Since 2014, the city's primary disposal site has been a semi-controlled dumpsite that
receives between 210 and 270 metric tonnes of waste daily. Access to the site is not controlled, resulting in unsafe
scavenging and harmful fires. In addition, the site does not have a liner system, groundwater monitoring, or a soil
cover. Because of the unsafe conditions at the site, and the associated impacts on health and aesthetics, the city
has received many complaints from its residents.
In response, the municipality has begun working with the Ministry of Environment and Natural Resources, the
United States Agency for International Development, and the United States Environmental Protection Agency
to develop a plan for improving and ultimately closing the current dumpsite, and transitioning to a sanitary
engineered landfill.
Between 2017 and 2018, the city and its partners conducted multiple field
assessments to collect data on current solid waste management practices
and meet with stakeholders. Based on this information collection effort,
the city's partners prepared recommendations for improving current
site operations (e.g., by establishing a proper working face), converting
the site to an engineered landfill (e.g., by designing leachate treatment
and LFG collection systems), and contracting with the private sector.The
recommendations were presented to stakeholders in August 2018.
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14 ENERGY RECOVERY
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Key Resources
Waste-to-Energy Options in Municipal Solid
Waste Management: A Guide for Decision
Makers in Developing and Emerging Countries
(Mutz etal.2017)
ISWA Guidelines: Waste to Energy in Low and
Middle!ncorne Countries (ISWA 2013b)
Waste to Energy: Considerations for Informed
Decision-Making (UNEP 2019)
GC9
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14
Energy Recovery
129
Section 14
Energy Recovery
Approximately 15 percent of all waste that is treated
globally is incinerated with energy recovery (UNEP
2019). The majority of energy recovery facilities
are currently located in developed countries, but
many developing countries are interested in this
solid waste management strategy because of the
potential to eliminate large quantities of waste
that is otherwise not recyclable. In addition, these
facilities can generate an alternative energy source
and preserve landfill space. Nevertheless, there are
many challenges associated with developing and
successfully operating an energy recovery project,
and cities are encouraged to carefully consider if
energy recovery is the right option for their specific
situation and needs.
This section focuses on energy recovery processes
that involve converting non-recyclable material
into usable heat, electricity, or fuel. In particular, it
discusses different energy recovery technologies,
and important factors to consider when determining
whether to include energy recovery as a part of a
solid waste management system. This section does
not address biogas projects that produce energy from
anaerobic digestion (AD) of organic waste, or landfill
gas (LFG) projects.These topics are addressed in the
Organic Waste Management and Sanitary Landfills
sections, respectively.
Why Consider Energy Recovery?
Energy recovery projects can help eliminate waste
materials that are otherwise not recyclable, while
providing a source of energy that can be used in a
variety of applications, including district heating and
cooling. In addition, energy recovery projects can
help reduce the volume of waste sent to disposal
sites, a particularly appealing advantage in locations
that have limited dumpsite or landfill capacity.
Waste-to-energy (WtE) projects (or"waste from
energy") can also improve public health and safety by
removing waste from open dumpsites (UNEP 2019).
That said, having regulatory and environmental
frameworks (e.g., emissions control technologies) in
place to ensure that WtE projects do not exacerbate
local air quality concerns is critical for the success of
the projects in achieving environmental and health
objectives.
Types of Energy Recovery
Energy recovery, or WtE, is the process of converting
non-recyclable material into usable heat, electricity, or
fuel.This conversion can be accomplished through a
variety of processes, including (Mutz et al. 2017):
• Combustion. Combustion or incineration is the
burning of solid waste in specialized facilities to
create heat, steam, or electricity. Combustion
requires carefully managing exhaust emissions
(e.g., particulates and gases) and safely disposing
or beneficially using solid ashes in order to
reduce the environmental impacts of the process.
Combustion ash is typically landfilled (U.S.
EPA 2016d).
• Co-processing. Co-processing uses waste as a
substitute for fossil fuels in industrial processes,
such as cement manufacturing. Refuse-derived
fuel is required for co-processing in order to ensure
controlled combustion. Refuse-derived fuel is
generally made up of relatively homogenous
waste and is achieved through a series of pre-
processing steps, which requires additional capital.
Co-processing helps to reduce carbon dioxide
emissions by using biomass fuels and mixed fuels,
and can also be a viable treatment option for
non-recyclable plastics (Hinkel and Blume 2018).
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130
CASE IN POINT |g|
Public Private
Partnerships in China
The City of Wenzhou, China, was facing increasingly more household waste each
year. Historically, household waste in the area went to two landfills. In 2002, the city
partnered with a local private contractor to build and operate an incineration plant for
two years. At the end of two years, the government would own and operate the plant
without any compensation to the private investor.The large plant is able to sell 7 million
kilowatts of electricity per year. The plant also receives a service fee from the Wenzhou
city government for the disposal of solid waste.
Challenges
WtE can be a solution to reduce waste and provide an
alternative energy supply. However, there have been
few successful WtE projects in developing countries;
challenges that cities face for each type of energy
recovery technology include (Mutz et al. 2017):
• Substantial capital investment to build and
operate facilities. Operational costs include
fixed operating costs (e.g., salaries) and variable
operating costs (e.g., maintenance, utility usage,
emissions systems). While WtE facilities can be
made economically viable with tipping fees, sales
from electricity, and sales from other co-products
(e.g., recovered metals), it can take years for a
facility to become profitable. Often, the revenue
from energy production does not cover the
operational costs of the facility, so cities must
be able and willing to look for additional types
of financing, such as public-private partnerships
(PPPs). In addition, electricity prices can fluctuate,
meaning energy recovery from solid waste may
not be the most competitive option.
• Emissions and solid waste management. WtE
facilities generate waste products that need
to be appropriately handled and disposed of,
including bottom and fly ash. Some of these
waste products can be mitigated by using control
and monitoring technologies for air and water
emissions, conducting proper containment and
disposal of ash and other waste, controlling
noise from machinery and transport vehicles,
and properly handling and storing hazardous
wastes. It is important that cities have adequate
air monitoring and compliance mechanisms to
ensure that WtE facilities meet regulatory and
emission standards.
• Specific feedstock requirements. WtE requires
feedstocks with specific calorific-content
thresholds that may not be achievable for cities or
urban centers that do not separate waste streams.
Mixed waste can have too much moisture content
or too little caloric value, and some countries'
regulations prohibit burning of low-calorie
wastes. In addition, climactic conditions can make
proper feedstock difficult to obtain. For example,
eg
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Energy Recovery
131
in the Caribbean, high wet organic waste content
and harsh environments lead to the rapid
corrosion of energy-recovery equipment (IDB
2016). In many cities, WtE projects may compete
with recycling efforts for recyclable materials with
high-calorific values.
• Education and training of staff. Knowledgeable
and skilled staff are required to implement and
operate the facility. Cities have found it beneficial
to ensure that facilities hire qualified staff, and
that all staff receive training.
• Conflicting, long-term commitments.
Constructing and operating WtE facilities
requires a long-term commitment from the
city. These commitments can conflict with
other local priorities, such as greenhouse
gas emissions reductions and overall waste
generation reduction targets (since reduced
waste generation rates mean less feedstock for
the facility)
AD digestion and LFG recovery are two other
ways to recover energy from waste. The Organic
Waste Management and Sanitary Landfills sections
provide more information on AD and LFG recovery,
respectively.
When to Consider WtE
Energy recovery can be an integral part of a
functioning solid waste management system.
However, according to the solid waste management
hierarchy described in the Approaches section, it is
a best practice to implement both source reduction
and recycling strategies before considering energy
recovery as an option (U.S. EPA 2019a), or implement
all three strategies in tandem. Additionally, because
of the potential risks associated with energy-recovery
technologies (especially those that do not incorporate
emissions control equipment), these projects are
a viable option only in cities with functioning and
efficient solid waste management systems, and
environmental management protocols in place.
Questions for Decision-Makers
Is an efficient solid waste management system
already in place?
What environmental legislation is in place to
protect against pollution caused by WtE? Are
all technologies covered by legislation? Are
monitoring mechanisms in place?
How can the city ensure high-quality streams
of waste suitable for combustion?
How will the city train staff to ensure they have
the skills to operate the facility?
Have end users for the electricity or heat been
identified and approached?
Have all project costs been considered
and alternative methods of finance been
identified? Is there security for the investors?
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*1 Summary of Key Resources
147
Appendix A
Summary of Key Resources
Resource
Organization
Year
Relevant Sections 1
A New Circular Vision for Electronics
World Economic
Forum
2019
Recvclina
A Road map forClosina Waste Dumosites: The
World's Most Polluted Places
International Solid
Waste Associations
(ISWA)
2016
Dumpsite Manaaement
Anaerobic Diaester (AD) Proiect Screenina Tool
United States
Environmental
Protection Agency
(U.S. EPA) and
Climate and Clean Air
Coalition (CCAC)
2018
Oraanic Waste Manaaement
BestManaaement Practices for Optimizina Waste
Collection Routes
U.S. EPA and CCAC
2015
Separation, Collection, and
Transportation
Best Practices for Waste Characterization
U.S. EPA and CCAC
2018
Characterization
Climate and Clean Air Coalition Municipal Solid
Waste Knowledae Platform
CCAC
Undated
Oraanic Waste Manaaement:
Dumpsite Manaaement: Sanitarv
Landfills
Closina Dumosites Knowledae Base
ISWA
2017
Dumpsite Manaaement
Collection of Municipal Solid Waste in Developina
Countries
UN-Habitat
2011
Separation, Collection, and
Transportation
Consumer Goods Forum: Food Waste
The Consumer Goods
Forum
2020
Prevention and Minimization
Decision-Maker's Guide to Solid Waste
Manaaement, Volume II
U.S. EPA
1995
Stakeholder Enaaaement: Plannina
Svstem s
Developina Intearated Solid Waste Manaaement
Plan, Trainina Manual: Volume 1: Waste
Characterization and Ouantification with
Projections for Future
United Nations
Environment
Programme (UNEP)
2009
Characterization
DeveloDina Intearated Solid Waste Manaaement
Plan, Volume 2: Assessment of Current Waste
Manaaement Svstem and Gods Therein
UNEP
2009
Plannina Svstems
Developina Intearated Solid Waste Manaaement
Plan, Trainina Manual: Volume 4: Intearated Solid
Waste Manaaement Plan
UNEP
2009
Plannina Svstems
Explainer: How to finance urban
infrastructure?
C40 Cities
2017
Economic Considerations
Fiahtina for Trash Free Seas: Endina the Flow of
Trash at the Source
Ocean Conservancy
2019
Marine Litter
-------
Summary of Key Resources
148
Resource
Organization
Year
Relevant Sections
Financina Readiness Questionnaire
U.S. EPA and CCAC
2018
Economic Considerations
Food Loss Analysis Reports and Fact Sheets
Food and Agriculture
Organization of the
United Nations
2020
Prevention and Minimization
Food Waste as a Global Issue - From the Perspective
ISWA
2013
Prevention and Minimization
of Municipal Solid Waste Manaaement
Global Alliance of Waste Pickers
Global Alliance of
Waste Pickers
Undated
Informal Sector Recvclina
Global Waste Manaaement Outlook
UNEPand ISWA
2015
Understandina the Need for Solid
Waste Manaaement
Global Development Alliances
United States Agency
for International
Development
2019a
Economic Considerations
Global Food Waste Manaaement: An
World Biogas
2018
Oraanic Waste Manaaement
Implementation Guide for Cities
Association and C40
Cities
Global Methane Initiative: Bioaas Tools and
Global Methane
2020
Oraanic Waste Manaaement:
Resources
Initiative
Sanitarv Landfills
Global Partnership on Marine Litter
UNEP
Undated
Marine Litter
Global Waste Manaaement Outlook
UNEP
2015
Plannina Svstems
Government of India Municipal Solid Waste
Central Public Health
2016
Sanitarv Landfills
Manaaement Manual - Chapter 4.5: Municipal
Sanitarv Landfills
and Environmental
Engineering
Organisation
Handbook on Communication and Enaaaement
Brazilian Association
2017
Stakeholder Enaaaemen t
for Solid Waste Manaaement
of Public Cleansing
and Waste
Management
Companies and CCAC
Improvina Solid Waste Disposal in San Cristobal
U.S. EPA
2018
Plannina Svstems: Dumpsite
Municipality, Dominican Republic
Manaaemen t: Sanitarv Landfills
In ternational Best Practices Guide for Landfill Gas
Global Methane
2012
Sanitarv Landfills
Enerav Projects
Initiative
International Environmental Finance Tools
U.S. EPA
2011
Economic Considerations
International Guidelines for Landfill Evaluation
ISWA
2011
Sanitarv Landfills
ISWA Guidelines: Waste to Enerav in Low and
ISWA
2013
Enerav Recovery
Middle Income Countries
ISO Standards for Recvclina
International
Organization for
Standardization
2020
Recvclina
Landfill Operational Guidelines. 2nd Edition
ISWA
2010
Sanitarv Landfills
Manaaina and Transformina Waste Streams: A Tool
U.S. EPA
2017
Prevention and Minimization
for Communities
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*1 Summary of Key Resources
149
Resource
Organization
Year
Relevant Sections
Materials Recovery Facility Toolkit
Asian Development
Bank
2013
Recvclina
Municipal Finances: A Handbook for Local
Governments
Farvacque-Vitkovic
and Kopanyi
2014
Economic Considerations
Municipal Solid Waste (MSW) PPPs
The World Bank
2019
Economic Considerations
OraanEcs -Cost Estimating Tool for Manaaing
U.S. EPA
2016
Oraanic Waste Manaaement
Source-Separated Oraanic Waste
Overview ofLeaal Framework for Inclusion of
Informal Recvclers in Brazil
Dias
2011
Recvclina
Plastics Policv Plavbook: Strateaies for a Plastic-
Free Ocean
Ocean Conservancy
2019
Prevention and Minimization:
Informal Sector Recvclina: Economic
Considerations
Primer for Cities forAccessina Financina for
Municipal Solid Waste Projects
I SWA
2017
Economic Considerations
Public Participation Guide
U.S. EPA
2017
Stakeholder Enaaaemen t
Recvclina and Disposal of Municipal Solid Waste in
Low and Middle-Income Countries
UN-Habitat
2011
Recvclina
Reducina Food Loss and Waste: Settina a Global
Action Aaenda
Flanagan et al.
2019
Oraanic Waste Manaaement
Results-based Financina for Municipal Solid Waste
The World Bank
2014
Economic Considerations
Sanitarv Landfill Desian and Sitina Criteria
Cointreau
2004
Sanitarv Landfills
Sector Environmental Guideline Solid Waste
USAID
2018
Approaches: Sanitarv Landfills
Solid Waste Manaaement
UNEP
2005
Understanding the Need for Solid
Waste Manaaement
Sources: Marine Debris
National Oceanic
and Atmospheric
Administration
2019
Marine Litter
Sustainable Financina and Policv Models for
Municipal Compostina
The World Bank
2016
Economic Considerations: Oraanic
Waste Manaaement
Sustainable Materials Manaaement: Non-
Hazardous Materials and Waste Manaaement
Hierarchy
U.S. EPA
2017
Approaches
Sustainable Materials Manaaement: The Road
Ahead
U.S. EPA
2009
Understandina the Need for Solid
Waste Manaaement
Technical Guidance on the Operation of Oraanic
Was te Manaaemen t Treat men t Plan ts
CCAC and ISWA
2016
Oraanic Waste Manaaement
The Waste Experts: Enablina Conditions for
Informal Sector Intearation in Solid Waste
Manaaement
Gerdes and Gunsilius
2010
Informal Sector Recvclina
The Weight of Nations: Material Outflows from Matthews et a I. 2000 Understanding the Need for Solid
Industrial Economies Waste Management
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Summary of Key Resources
150
Resource
Organization
Year
Relevant Sections
Toolkit: Reducina the Food Wastaae Footprint
Food and Agriculture
Organization of the
United Nations
2013
Prevention and Minimization
Toward Sustainable Municipal Oraanic Waste
Manaaement in South Asia
Asian Development
Bank and the
Australian
Government Aid
Program
2011
Oraanic Waste Manaaement
Trainina Module: Closina an Ooen Dumpsite
andShiftina from ODen Dumpina to Controlled
Dumpina and to Sanitarv Land Fillina
UNEP
2005
Dumpsite Manaaement
Trainina: Municipal Solid Waste Manaaement in
Developina Countries
Coursera
2019
Dumpsite Manaaement
U.S. EPA Anaerobic Diaestion Web Site
U.S. EPA
2020
Oraanic Waste Manaaement
Usina Internal Revenue Streams and External
Financina for Solid Waste Manaaement Projects
U.S. EPA and CCAC
2018
Economic Considerations
Waste Atlas (Database of Global Waste
Manaaement Sites)
D-WASTE
2020
Dumpsite Manaaement: Sanitarv
Landfills
Waste Collection: A Report
Kogler
2007
Separation. Collection, and
Transportation
Waste to Enerav: Considerations for Informed
Decision-Makina
UNEP
2019
Enerav Recoverv
WasteTransfer Stations: A Manual for Decision-
Makina
U.S. EPA
2002
Separation. Collection, and
Transportation
Waste-to-Enerav Options in Municipal Solid Waste
Manaaement: A Guide for Decision Makers in
Developina andEmeraina Countries
Mutz eta I.
2017
Enerav Recoverv
Webinar: Closure and Rehabilitation of Open
Dumps
CCAC
2014
Dumpsite Manaaement
What A Waste 2.0: A Global Snapshot of Solid
Waste Manaaement to 2050
Kaza et a I.
2018
Understandina the Need for Solid
Waste Manaaement: Recvclina
What a Waste 2.0: A Global Snapshot of Solid Waste
Manaaement to 2050. Tacklina Increasina Plastic
Waste
The World Bank
2019
Recvclina
Women in Informal Employment: Globalizina &
Oraanizina
Women in Informal
Employment:
Globalizing &
Organizing
2020
Informal Sector Recvclina
-------
Region-Specific Resources for Solid Waste Management
151
Appendix B
Region-Specific Resources for Solid
Waste Management
East Asia and the Pacific
Observations of Solid Waste Landfills in Developing Countries: Africa, Asia and Latin America (Johannessen and Boyer 1999)
Solid Waste Management in Pacific Island Countries and Territories (Richards and Haynes 2014)
Challenges and an Implementation Framework for Sustainable Municipal Organic Waste Management Using Biogas
Technology in Emerging Asian Countries (IGES 2019)
Data Collection Survey on Solid Waste Management Sector in the Central American and Caribbean Region (JICA 2012)
Environmental Guidelines for the USAID Latin America and Caribbean Bureau (USAID Undated)
Observations of Solid Waste Landfills in Developing Countries: Africa, Asia and Latin America (Johannessen and Boyer 1999)
Government of India Municipal Solid Waste Management Manual (CPHEEO 2016)
Observations of Solid Waste Landfills in Developing Countries: Africa, Asia and Latin America (Johannessen and Boyer 1999)
South Asia
Observations of Solid Waste Landfills in Developing Countries: Africa. Asia and Latin America (Johannessen and Boyer 1999)
Composting and Anaerobic Digestion: Promising Technologies for Organic Waste Management (TERI 2020a)
Sub-Saharan Africa
Lixo Fora DAaua Guidance (in Portuguese and English) (ABRELPE 2020)
Middle East and North Africa
Latin America and the Caribbean
Waste Management Outlook for Latin America and the Caribbean (UNEP 2018c)
An Overview of Municipal Solid Waste Management in Developing and Developed Economies: Analysis of Practices and
Contributions to Urban Flooding in Sub-Saharan Africa (Njoku et al. 2015)
Observations of Solid Waste Landfills in Developing Countries: Africa, Asia and Latin America (Johannessen and Boyer 1999)
-------
c
Public Engagement/Communications Tools
152
Appendix C
Public Engagement/Communication
Tools
Tools to Inform the Public
Tool
Number of
Participants
Best Suited for
In-
Person
Virtual Print
Public meetings
Public meetings are held to engage
a wide audience in information-
sharing and discussion. They can
be used to increase awareness or
as a starting point for engagement
and further public involvement.
Briefings
Short presentations given directly
to local groups at their existing
meetings or locations - such as
social and civic clubs - to provide
an overview or update on a
project.
Telephone contacts
Calls to specific people or groups
of people interested in an issue.
Printed materials
Popular forms include fact sheets,
flyers, newsletters, brochures, post
cards, issue papers, and summary
reports.
Websites
Worldwide websites provide
interested stakeholders
with project information,
announcements, documents,
and opportunities for input or
discussion. Web sites allow for
the use of a wide variety of media
formats, including video.
Large groups
Generally
designed for
smaller groups
Generally one
person at a time
Unlimited, but
printing and
mailing costs
could be a
consideration
Unlimited
Smaller cities and cities
where stakeholders are
willing to attend meetings.
Reaching out to
established groups.
All projects, but require
sufficient manpower to
answer and/or return calls.
Projects with manageable
numbers of stakeholders
if printing and mailing are
to be done. May not be
appropriate where literacy
is an issue.
All projects and audiences
where access is available.
Literacy issues can be
overcome by using voice
and video.
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c
Public Engagement/Communications Tools
153
Tools to Inform the Public
Tool
Number of
Participants
Best Suited for In-
Virtual Print
Person
Information repositories
Unlimited, but can
Localized projects where
Places to store project information
be geographically
access to a physical site is
in a centralized public location to
constrained by
possible. Repositories can
provide easy access for residents.
location
also be established online.
Typically, the information stored
X
in a repository is for onsite perusal
and review and not to be taken
offsite.
Information hotlines Unlimited
They provide information in two
ways: (1) via live telephone access
to project team staff members
who can answer questions or
provide additional information and
assistance, and (2) via a telephone
call-in number that provides
prerecorded project information.
Press and media Unlimited
Press and media releases aim to
get the widest possible coverage
for a local issue or proposal
through the publication or
broadcasting of the information in
the release. They may also attempt
to elicit further enquiries by the
public about the issue.
Social media
Social media outreach can
provide interested stakeholders
with project information,
announcements, documents,
and opportunities for input or
discussion. Social media, such as
Twitter, WhatsApp, and Facebook,
allows for the use of a wide variety
of media formats, including video.
Tools to Generate and Obtain Public Input
Interviews Individual or small
Learning about individual
Interviews with stakeholders are group
perspectives on issues.
one-on-one conversations about a
specific topic or issue. The primary
Y
Y
purpose of these interviews is to
y\
y\
obtain project-relevant information
and elicit stakeholder reactions
and suggestions.
All projects and audiences,
especially those where
internet access is an issue.
X
Larger projects of
widespread interest; use
of press and media should
form part of the overall
communications strategy. X X
Unlimited Larger projects of
widespread interest;
social media use should
form part of the overall
communications strategy.
X
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Public Engagement/Communications Tools
154
Tools to Inform the Public
Tool
Number of
Participants
Best Suited for
Virtual Print
Person
Focus groups
A small group discussion with
professional leadership. Focus
groups are used to find out what
issues are of most concern for
residents or groups when little or
no information is available.
Small groups (15
or fewer)
Exploring attitudes and
opinions in depth.
X
Public meetings/
hearings
Public meetings/hearings are
held to engage a wide audience
in information-sharing and
discussion. They can be used to
increase awareness or as a starting
point for engagement and further
public involvement.
Large groups
Presenting information to
and receiving comments or
feedback from the public.
X
Public workshops
A workshop held by a public
agency for the purpose of
informing the public and obtaining
their input on the development
of a regulatory action or control
measure by that agency.
Multiple small
groups (8-15 in
each small group)
Exchanging information
and/or problem-solving in
small groups.
X
Appreciative inquiry process
A facilitated process to discover
past and current practices that
inform and inspire participants as
they strive to collaboratively create
and implement an ideal future.
Varies, but usually
involves the
"whole system"
Envisioning shared future,
not making decisions.
X
World cafes
A meeting process that involves
a series of simultaneous
conversations around a particular
Very adaptable,
involving multiple
simultaneous
conversations
Fostering open discussion
of a topic and identifying
areas of common ground.
issue or topic. A World Cafe (4-8 in each small
typically lasts 2-3 hours and group)
consists of numerous table
conversations involving 3-5
persons per table. Each table has
a "host" who stays at the table
during the entire event and keeps
the table discussion on track.
-------
Public Engagement/Communications Tools
Tools to Inform the Public
Tool
Number of
Participants
Best Suited for In-
Virtual Print
Person
Charrettes
A wide range of interactive
tools that embrace existing and
emergent media sources as a
forum for allowing the public
to express opinions and seek to
influence decision-making within
their area. Electronic democracy
can be achieved through older
technology, such as television and
radio; and newer technologies,
such as the internet, cell phones,
and electronic polling systems.
Small to medium
Generating comprehensive
plans or alternatives.
X
Electronic democracy
A wide range of interactive
tools that embrace existing and
emergent media sources as a
forum for allowing the public
to express opinions and seek to
influence decision-making within
their area. Electronic democracy
can be achieved through older
technology, such as television and
radio; and newer technologies,
such as the internet, cell phones,
and electronic polling systems.
Unlimited
Enabling the direct
participation of a
geographically dispersed
public at their convenience.
X
Tools for Consensus Building and Agreement Seeking
Consensus workshops
A type of public meeting that
allows stakeholders to be involved
in assessing an issue or proposal,
and working together to find
a common ground and deliver
consensus-based input.
Large groups
Smaller, less-controversial
decisions or identifying
shared values.
X
Advisory boards Small groups (25 Long-term and complex
A representative group of or fewer) processes.
stakeholders from a particular
locality appointed to provide
comments and advice on a project
or issue that meet regularly over a
period of time to develop detailed
knowledge of the project and
issues; and share their relevant
perspectives, ideas, concerns, and
interests.
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c
Public Engagement/Communications Tools
156
Tools to Inform the Public
Tool
Number of
Participants
Best Suited for
In-
Person
Virtual Print
Resident juries Limited, generally Decisions that can be
A representative sample of around 12 organized into clear
residents (usually selected in a options.
random or stratified manner)
who are briefed in detail on the
background and current thinking
related to a particular issue or X
project. The issue they are asked
to consider will be one that has an
effect across the locality and where
a representative and democratic
decision-making process is
required.
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SEPA
August 2020
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