Record Display for the EPA National Library Catalog

RECORD NUMBER: 6 OF 9

OLS Field Name OLS Field Data
Main Title Removing 'Giardia' Cysts from Low Turbidity Waters by Rapid Rate Filtration.
Author Al-Ani, M. Y. ; Hendricks, D. W. ; Logsdon, G. S. ; Hibler, C. P. ;
CORP Author Colorado State Univ., Fort Collins.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1986
Report Number EPA/600/J-86/138;
Stock Number PB87-103578
Additional Subjects Giardia ; Membranes ; Filtration ; Water treatment ; La Pondre River ; Pilot plants ; Turbidity ; Coliform bacteria ; Coagulation ; Dosage ; Bacteria ; Diatomaceous earth ; Flocculating ; Sedimentation ; Cysts ; Removal ; Efficiency ; Reprints ; Pre-treatment water
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB87-103578 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 11p
Abstract
Pilot-plant studies showed that when effective chemical pretreatment is employed in combination with rapid rate filtration, removals of turbidity, total coliform bacteria, and Giardia cysts from low turbidity waters may be greater than 80 and 99.9 percent, respectively. Proper coagulation, however, requires the careful selection of chemicals and dosages. It was also observed that for waters having turbidity levels less than 1ntu, percent reduction of turbidity can serve as a surrogate indicator of the removal of Giardia cysts.