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OLS Field Name OLS Field Data
Main Title Chemical coagulation/mixed-media filtration of aerated lagoon effluent /
Author Grutsch, J. F. ; Mallatt, R. C. ; Peters., A. W.
CORP Author American Oil Co., Yorktown, Va.;Robert S. Kerr Environmental Research Lab., Ada, Okla.
Publisher National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency ; For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
Year Published 1975
Report Number EPA-660/2-75-025; EPA-S-803026; EPA-ROAP-21AZP
Stock Number PB-247 148
OCLC Number 01914716
Subjects Sewage--Purification--Filtration. ; Aerated package treatment systems. ; Sewage lagoons.
Additional Subjects Filtration ; Industrial waste treatment ; Coagulation ; Refineries ; Lagoons(Ponds) ; Temperature ; Concentration(Composition) ; Turbidity ; Design ; Operating costs ; Maintenance ; Cold weather construction ; Aeration ; Petroleum products ; Brackish water ; Virginia ; Aeration ponds ; Zeta potential
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJAD  EPA 660/2-75-025 Region 3 Library/Philadelphia, PA 08/16/1996
EJBD ARCHIVE EPA 660-2-75-025 Headquarters Library/Washington,DC 01/05/2015
EKAM  EPA 660/2-75-025 Region 4 Library/Atlanta,GA 10/25/1996
EMBD  EPA/660/2-75/025 NRMRL/GWERD Library/Ada,OK 06/07/1996
ESBD  EPA-660-2-75-025 CPHEA/PESD Library/Corvallis,OR 09/27/2017
NTIS  PB-247 148 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation viii, 103 pages : illustrations ; 27 cm.
Abstract Operating problems and the effect of operating variables were investigated during full-scale plant operations in the scalping mode. Influent suspended solids concentration and water temperature were the most significant independent variables. Mechanical limitations were studied, including a filter bed disturbance that necessitated a total bed replacement. High, localized backwash velocity caused the invisible disturbance which reduced turbidity removal from about 80% to 50%. Diagnostic procedures, design changes, and the costs of operation and maintenance are reported. A cold weather study showed that a three-chemical destablization pretreatment system is required for filtration of biocolloids in brackish water. Determination of the optimal three-chemical destabilization system using zeta potentials required evaluation of zeta potentials in a manner which sorted out the effect of double-layer repression. The colloid destabilization mechanisms of charge neutralization and bridging were required for optimal filter performance. For colder water temperatures, even with optimal chemical treatment, the filter hydraulic loading must be decreased. The change in hydraulic loading with temperature related directly to the water's viscosity.
Notes "Grant #S803026-01; program element 1BB036; ROAP/Task no. 21AZP/028-037." "June 1975." Includes bibliographical references (page 67).
Place Published Corvallis, Or. Washington, D.C.
Corporate Au Added Ent National Environmental Research Center (Corvallis, Or.); United States. Environmental Protection Agency. Office of Research and Development.
Title Ser Add Ent Research reporting series. Environmental protection technology ; EPA-660/2-75-025.
PUB Date Free Form 1975
Series Title Untraced Environmental protection technology series ; EPA-660/2-75-025
NTIS Prices PC A06/MF A01
BIB Level m
Medium unmediated
Content text
Carrier volume
Cataloging Source OCLC/T
OCLC Time Stamp 20170919053319
Language eng
SUDOCS Number EP 1.23/2:660/2-75-025
Origin OCLC
OCLC Rec Leader 02290cam 2200529Ii 45010