Record Display for the EPA National Library Catalog

RECORD NUMBER: 434 OF 729

Main Title Oxygen consumption in continuous biological culture.
CORP Author University of Kansas. Center for Research.
Publisher [U.S. Environmental Protection Agency] : For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
Year Published 1971
Report Number EPA-WP-01023-03; EPA-17050-DJS; 07104,; 17050-DJS-05/71
Stock Number PB-208 349
Subjects Sewage--Purification--Activated sludge process ; Sewage--Purification--Aeration
Additional Subjects ( Activated sludge process ; Aeration) ; ( Sewage treatment ; Activated sludge process) ; Nutrents ; Respiration ; Dissolved gases ; Oxygen ; Design criteria ; Mathematical models ; Mixing ; Chemical oxygen demand
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB-208 349 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xi, 130 pages : illustrations ; 29 cm.
Abstract
To aid in the further development of sewage treatment by activated sludge, a continuous flow automatically recording respirometer was used to study the response of aeration only and aeration with sludge return completely mixed activated sludge systems (CMAS) to step changes in the influent substrate. The experiments were conducted at 25 C with glucose; a mixture of glucose, glutamate, and acetate; and a mixture of sewage solids plus Metrecal. Influent substrate concentrations were doubled in the 3-hour and tripled in the 6-hour mean residence time aeration only experiments without increasing the soluble COD in the effluent. Decreases in the influent substrate concentrations produced rapid decreases in the rate of oxygen utilization. A procedure for calculating the rate of oxygen uptake by a CMAS system at any time during a step transient was developed. (Author)
Notes
"17050DJS05/71." Prepared for the Environmental Protection Agency under grant WP01023-03. Includes bibliographical references. Microfiche.