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 |
Additional Subjects |
Filtration ;
Surface waters ;
Water treatment ;
Flow rate ;
Turbidity ;
Coliform bacteria ;
Particles ;
Giardiasis ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB87-175642 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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 |
Cataloging Source |
NTIS/MT |
Control Number |
718320297 |
Origin |
NTIS |
Type |
CAT |