Record Display for the EPA National Library Catalog

RECORD NUMBER: 6 OF 16

OLS Field Name OLS Field Data
Main Title Experimental evaluation of oxygen and air activated sludge nitrification systems with and without pH control /
Author Heidman, James A.
CORP Author District of Columbia Dept. of Environmental Services, Washington.;Municipal Environmental Research Lab., Cincinnati, Ohio.
Publisher U.S. Environmental Protection Agency, Office of Research and Development,Municipal Environmental Research Laboratory,
Year Published 1976
Report Number EPA-600/2-76-180; EPA-68-03-0349; EPA-ROAP21-ASR; 026
Stock Number PB-262 197
OCLC Number 07879314
Subjects Sewage--Purification--Activated sludge process. ; Sewage--Purification--Oxidation.
Additional Subjects Sewage treatment ; Activated sludge process ; Nitrification ; Oxygenation ; Performance evaluation ; Ammonia ; pH ; Calcium oxides ; Settling ; Reaction kinetics ; Tables(Data) ; District of Columbia
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=2000ZQAK.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAD  EPA 600/2-76-180 Region 3 Library/Philadelphia, PA 07/18/1997
EJBD ARCHIVE EPA 600-2-76-180 Headquarters Library/Washington,DC 09/27/2010
EJBD  EPA 600-2-76-180 c.1 Headquarters Library/Washington,DC 02/25/2014
ELBD RPS EPA 600-2-76-180 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
ESAD  EPA 600-2-76-180 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-262 197 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation ix, 57 p. : ill.; 28 cm.
Abstract
The nitrification capabilities of two oxygen activated sludge systems receiving District of Columbia secondary effluent at a steady state flow of 190 cu m/day (50,000 gpd) were evaluated. The pH of one system was controlled to maintain a pH of 7.0 in the last reactor pass of the four-pass system. The pH of the second system was uncontrolled and reactor pH values of 5.5-6.0 were common. Also parallel air and oxygen nitrification systems both with pH control were evaluated under similar operating conditions. Parameters used to compare the systems included effluent quality, sludge settling rates, lime dosage, sludge production and nitrification kinetic rates.
Notes
Bibliography p. 55-56.