||Comparison of some filtration processes appropriate for Giardia cyst removal /
Logsdon, Gary S., ;
Logsdon, G. S.
||Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div.
|| U.S. Environmental Protection Agency, Office of Research and Development, Water Engineering Research Laboratory,
Drinking water--Purification. ;
Water treatment ;
Sand filtration ;
Microorganism control(Water) ;
Water quality ;
Water supply ;
Giardia cyst removal ;
Diatomaceous earth(DE) filtration ;
||Region 9 Library/San Francisco,CA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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).
|Corporate Au Added Ent
||United States. Environmental Protection Agency. Office of Research and Development. Water Engineering Research Laboratory,
|PUB Date Free Form
||PC A03/MF A01
|OCLC Time Stamp
|OCLC Rec Leader
||01363nam 2200325Ki 45020