United States
Environmental Protection
Agency
Risk Reduction Engineering
Laboratory
Cincinnati OH 45268
Research and Development
EPA/600/S2-91/013 May 1991
Project Summary
Integrated Model for Predicting
the Fate of Organics in
Wastewater Treatment Plants
Rakesh Govind, Lie Lai, and Richard A. Dobbs
An integrated Fate Model has been
developed to predict the fate of organics
in a wastewater treatment plant. The Fate
Model was validated using experimental
data from a pilot-scale facility; the bio-
degradation kinetic constants for some
compounds were estimated using the
group contribution approach.
When the Fate Model was compared
with other existing models, some of its
advantages are that the Model-
has quantified all treatment mecha-
nisms for primary- and activated-
sludge treatment;
has properties for 196 compounds
in Its database;
can estimate first-order biodegra-
dation kinetic rate constants for a
variety of compounds using the
group contribution method;
has default values for small, me-
dium, and large-scale wastewater
treatment plants;
can handle user input values for the
plant operating parameters; and
Is easy to use on IBM PCs.
The Fate Model can assess volatile
organic compound emissions from a
wastewater sewer system, predict con-
centrations of toxic compounds on
sludge, and provide a general frame-
work for estimating the removal of toxic
compounds during activated sludge
treatment.
This Project Summary was developed
by EPA's Risk Reduction Engineering
Laboratory, Cincinnati, OH, to announce
key findings of the research project that
Is fully documented on a diskette (see
ordering Information at back).
A journal article was submitted in fulfill-
ment of Cooperative Agreement CR-812939
by the University of Cincinnati under the
sponsorship of the U.S. Environmental Pro-
tection Agency. The journal article was pub-
lished in Environmental Progress, Volume
10, No. 1, pp. 13-23, February 1991, and
also will be available from the National
Technical Information Service.
Printed on Recycled Paper
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Rakesh Govind and Lie Lai are with the University of Cincinnati, Cincinnati, OH 45221.
Richard A. Dobbs (also the EPA Project Officer, see bebw) is with the Risk Reduc-
tion Engineering Laboratory, Cincinnati, OH 45268.
The diskette, entitled "Fate Model Program (Version 1.0)," (Order No. PB91-507 137/
AS; Cost: $50.00, subject to change) will be available only from:
National Technical Information Service
5285 Port Royal Road
Springfield, VA 22161
Telephone: 703-487-4650
The EPA Project Officer can be contacted at:
Risk Reduction Engineering Laboratory
U.S. Environmental Protection Agency
Cincinnati, OH 45268
United States
Environmental Protection
Agency
Center for Environmental
Research Information
Cincinnati, OH 45268
BULK RATE
POSTAGE & FEES PAID
EPA
PERMIT No. G-35
Official Business
Penalty for Private Use $300
EPA/600/S2-91/013
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