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TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing)
1. REPORT NO.
EPA-670/2-75-050d
2.
3. RECIPIENT'S ACCESSIOWNO.
4. TITLE AND SUBTITLE
DIRECT FILTRATION OF LAKE SUPERIOR WATER
FOR ASBESTIFORM FIBER REMOVAL
App endixD
7. AUTHOR(S) ~~~
5. REPORT DATE
June 1975; Issuing Date
6. PERFORMING ORGANIZATION CODE
8. PERFORMING ORGANIZATION REPORT NO.
Black § Veatch, Consulting Engineers
9. PERFORMING ORGANIZATION NAME AND ADDRESS
Black § Veatch, Consulting Engineers
1500 Meadow Lake Parkway
Kansas City, Missouri 64114
10. PROGRAM ELEMENT NO.
1CB047; ROAP 21AQB; Task 024
11.CONTRACT/8JUJ4XNO.
DACW 37-74-C-0079
IAG #EPA-IAG-D4-0388
12. SPONSORING AGENCY NAME AND ADDRESS
National Environmental Research Center
Office of Research and Development
U.S. Environmental Protection Agency
Cincinnati, Ohio 45268
13. TYPE OF REPORT AND PERIOD COVERED
Final
14. SPONSORING AGENCY CODE
15. SUPPLEMENTARY NOTES
This work conducted through interagency agreement between EPA Region V and the Corps
of Engineers, St. Paul District. See also EPA-670/2-75-050a, b, c, e, f, and g.
16. ABSTRACT ~~"~~~~~" ~~~
Pilot plant research conducted in 1974 at Duluth, Minnesota, demonstrated that
asbestiform fiber counts in Lake Superior water could be effectvely reduced by
municipal filtration plants. During the study, engineering data were also obtained
for making cost estimates for construction and operation of both granular and
diatomaceous earth (DE) filtration plants ranging in size from 0.03 to 30 mgd. In
Appendix D, all graphs of filter head loss and effluent turbidity as functions of
the number of hours of filter operation are given. These graphs and the individual
filter run data presented in Appendix C could be used to evaluate filter performance
under circumstances in which the production of clear, potable water is the goal,
rather than the removal of asbestiform fibers.
17.
KEY WORDS AND DOCUMENT ANALYSIS
DESCRIPTORS
b.lDENTIFIERS/OPEN ENDED TERMS
Mixed media filtration
Diatomaceous earth fil-
tration
Asbestiform
Chrysotile
Fiber removal
Duluth (Minnesota)
Lake Superior
c. COS AT l Field/Group
Asbestos
Amphiboles
Serpentine
Water supply
Filtration
Water treatment
Pilot plants
13B
18. DISTRIBUTION STATEMENT
RELEASE TO PUBLIC
19. SECURITY CLASS (ThisReport)'
UNCLASSIFIED
21. NO. OF PAGES
235
20. SECURITY CLASS (Thispage)
UNCLASSIFIED
22. PRICE
EPA Form 2220-1 (9-73)
229
U. S. GOVERNMENT PRINTING OFFICE: 1975-657-59V5397 Region No. 5-11
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