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RECORD NUMBER: 4 OF 44

Main Title Comparing Constant-Rate and Declining-Rate Direct Filtration of a Surface Water.
Author Hilmoe, D. J.; Cleasby, J. L.;
CORP Author Iowa State Univ., Ames.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1986
Report Number EPA/600/J-86/302;
Stock Number PB87-175642
Subjects Filtration; Surface waters; Water treatment; Flow rate; Turbidity; Coliform bacteria; Particles; Giardiasis; Reprints;
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB87-175642 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 12p
Abstract Pilot-scale constant-rate and declining-rate direct filtration systems were evaluated for treating a high quality surface water, using two flow rates and alum or cationic polymer as the primary coagulant. Turbidity, particle count, and total coliform count were used to compare filtrate qualities. It was found that the effluent qualities for the two filtration schemes were the same-a results that disagrees with the conclusions of a previous study that used lime-softened groundwater. However, the results of the current study were consistent with those of past projects in that the rate of head loss increase was the same for both types of filters. (Copyright (c) 1986 Journal AWWA.)
Supplementary Notes Pub. in Jnl. of American Water Works Association, v78 n12 p26-34 Dec 86. Sponsored by Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
NTIS Title Notes Journal article.
Title Annotations Reprint: Comparing Constant-Rate and Declining-Rate Direct Filtration of a Surface Water.
PUB Date Free Form c1986
Category Codes 68D
NTIS Prices PC A02/MF A01
Primary Description 600/14
Document Type NT
Control Number 718320297
Cataloging Source NTIS/MT
Origin NTIS
Type CAT


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