||Slow sand filter and package treatment plant evaluation : operating costs and removal of bacteria, giardia, and trihalomethanes /
Pyper, Gordon Richardson.,
||Dufresne-Henry, Inc., North Springfield, VT.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
|| National Technical Information Service, U.S. Department of Commerce,
Water treatment plants. ;
Diatomaceous earth. ;
Operating costs ;
Packaged sewage plants ;
Sand filters ;
Water treatment ;
Performance evaluation ;
Halogen organic compounds ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xiv, 182 pages : illustrations, charts ; 28 cm
||A two-year study was conducted on a municipally owned operating slow sand filter and a pressure diatomaceous earth (DE) filter, using the same source of supply. The systems were compared by monitoring ambient turbidity, particle county, total coliform, and standard plate count bacteria in the influent and filtered water as well as bacterial and Giardia cyst spikes. Both methods of treatment were comparable in effectiveness for most parameters. Turbidity removal tended to be better in the slow sand filter treatment than in the DE except for the period of time following slow sand filter scraping. Particle reduction tended to be very erratic in both systems for this particular source water.
||Includes bibliographical references. "PB85-197051." "April 1985." "EPA/600/2-85/052." "Cooperative Agreement No. CR809284010." "Project Officer Gary S. Logsdon, Drinking Water Research Division, Water Engineering Research Laboratory."
|Corporate Au Added Ent
||United States. Environmental Protection Agency. Office of Research and Development. Water Engineering Research Laboratory.; Dufresne-Henry, Inc.
|PUB Date Free Form
|OCLC Time Stamp
|OCLC Rec Leader
||01828nam 2200433Ki 45020