Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Automatic sludge blanket control in an operating gravity thickener /
Author Polta, R. C., ; Stulc, D. A.
CORP Author Metropolitan Waste Control Commission, St. Paul, MN.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1979
Report Number EPA-600/2-79-159; EPA-S-803602
Stock Number PB80-132350
OCLC Number 06287488
Subjects Sewage disposal--Minnesota.
Additional Subjects Automatic control equipment ; Sewage treatment ; Performance evaluation ; Thickening ; Sludge ; Process control ; Dewatering ; Thickeners(Equipment) ; Cost analysis ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  TD767.P64 1979 Region 1 Library/Boston,MA 04/29/2016
EJBD ARCHIVE EPA 600-2-79-159 Headquarters Library/Washington,DC 09/07/2011
EJBD  EPA 600-2-79-159 c.1 Headquarters Library/Washington,DC 07/09/2013
ELBD  EPA 600-2-79-159 AWBERC Library/Cincinnati,OH 04/10/1998
ESAD  EPA 600-2-79-159 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB80-132350 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation xi, 77 pages : illustrations ; 28 cm.
The purposes of this study were to evaluate some of the hardware required to monitor and control the operation of a gravity thickener and to identify any benefits associated with improved sludge blanket level control. An automatic sludge blanket level control system was installed in one of the six gravity thickeners at the Metropolitan Waste Water Treatment Plant. In addition, optical type solids analyzers were installed to monitor the inflow, overflow, and underflow streams of two basins - one with automated blanket level control and one with manual control. The performance characteristics of the instruments were documented during a series of five tests.
Includes bibliographical references (page 65).