Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Comparison of some filtration processes appropriate for Giardia cyst removal /
Author Logsdon, Gary S., ; Logsdon, G. S.
CORP Author Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Water Engineering Research Laboratory,
Year Published 1987
Report Number EPA 600-D-87-033
Stock Number PB87-147211
OCLC Number 868892392
Subjects Drinking water--Purification. ; Giardia.
Additional Subjects Water treatment ; Disinfection ; Filtration ; Sand filtration ; Microorganism control(Water) ; Water quality ; Flocculation ; Water supply ; Evaluation ; Giardia cyst removal ; Diatomaceous earth(DE) filtration ; Coagulation filtration
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-D-87-033 Headquarters Library/Washington,DC 02/24/2020
ERAD  EPA 600-D-87-033 Region 9 Library/San Francisco,CA 01/27/2014 DISPERSAL
NTIS  PB87-147211 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation ii, 27 leaves : charts ; 28 cm
Slow sand filtration, diatomaceous earth (DE) filtration, and coagulation-filtration (including conventional treatment, direct filtration, and in-line filtration), have been evaluated for Giardia cyst removal at pilot plant and/or field scale. Properly designed and operated, the above process can attain 99 percent cyst reductions, or higher. The paper discusses relative advantages and disadvantages of the proceses, and factors that may result in success or failure of treatment. Slow sand filtration may be the most appropriate for small systems if the raw water is treatable. DE filtration is very effective for cyst removal, but removal of very small particles requires use of fine grades of DE or chemical preconditioning of DE. Coagulation-filtration has the greatest flexibility, and can remove 30 to 50% of THM precursor; also turbidity, microorganisms, and metals that can be precipitated before filtration.
Cover title. "PB87-147211." "EPA 600-D-87-033." "January 1987." Includes bibliographical references (pages 21-24).