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OLS Field Name OLS Field Data
Main Title Digital computer control of advanced waste treatment systems /
Author Yarrington, Robert ; Schuk, Walter W. ; Bishop, Dolloff F. ; Bowers, James E. ; Fine., Elliot D. ;
Other Authors
Author Title of a Work
Yarrington, Robert.
CORP Author District of Columbia Dept. of Environmental Services, Washington. ;IBM Corp., Gaithersburg, Md.;Municipal Environmental Research Lab., Cincinnati, Ohio.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory,
Year Published 1977
Report Number EPA/600/2-77/211; EPA-68-01-0162
Stock Number PB-274 859
OCLC Number 31058031
Subjects Sewage disposal plants. ; Sewage--Purification. ; Sewage disposal plants. ; Sewage--Purification.
Additional Subjects Water pollution control ; Automatic control ; Activated sludge treatment ; Process control ; Pilot plants ; Digital computers ; pH ; Aeration ; Nitrification ; Process control ; Design criteria ; Performance evaluation ; Dissolved gases ; Oxygen ; Concentration(Composition) ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-2-77-211 Headquarters Library/Washington,DC 10/25/2011
EJBD  EPA 600-2-77-211 c.1 Headquarters Library/Washington,DC 03/26/2014
ESAD  EPA 600-2-77-211 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-274 859 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation viii, 41 pages : illustrations ; 28 cm
Abstract The objectives of the study were to develop and demonstrate automatic control strategies using a digital computer on advanced wastewater treatment systems. Two basic pilot treatment systems were automated, physical-chemical treatment and the three-stage activated sludge system. The digital automation involved control of lime feeding, pH control with CO2, FeCl3, sludge wasting, and breakpoint chlorination in the physical-chemical system. In the biological system, the automation involved FeCl3 dosage and D.O. control in aeration, pH control in nitrification and CH3OH and alum dosage controls in denitrification. The digital control approaches satisfactorily operated the pilot plants.
Notes "November 1977." "Contract number 68-01-0162." "This study was conducted in cooperation with District of Columbia Department of Environmental Services and International Business Machines Corporation."
Place Published Cincinnati OH
Supplementary Notes Prepared in cooperation with IBM Corp., Gaithersburg, Md.
Corporate Au Added Ent Municipal Environmental Research Laboratories (U.S.); District of Columbia. Department of Environmental Services.; International Business Machines Corporation.
NTIS Title Notes Final rept. Dec 72-Dec 74.
PUB Date Free Form 1977
Category Codes 13B; 7A; 68D#; 99B#
NTIS Prices PC A04/MF A01
Primary Description 600/14
BIB Level m
Medium unmediated
Content text
Carrier volume
Cataloging Source OCLC/T
Control Number 323728622
OCLC Time Stamp 20140318115301
Language eng
Origin OCLC
OCLC Rec Leader 01629cam 2200373Ka 45020