Record Display for the EPA National Library Catalog


Main Title A mathematical model of a final clarifier /
Author Agnew, Robert W.
Publisher U.S. Government Printing Office,
Year Published 1972
Report Number W7209382; EPA17090 FJW 02/72
OCLC Number 52035163
Subjects Sewage--Purification. ; Sewage clarifiers--Mathematical models.
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 17090-FJW-02-72 Headquarters Library/Washington,DC 05/06/2014
ELBD RPS EPA 17090-FJW-02-72 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
Collation vii, 98 pages : illustrations ; 28 cm.
"Report date February 1972." Includes bibliographical references (pages 89-93). Sponsored by U.S. EPA
Contents Notes
The final clarifier in the activated sludge process performs a vital role in secondary waste treatment systems. The purpose of the project was to develop a mathematical model to predict the solids concentration of both the underflow and overflow of a final clarifier as a function of the mixed liquor characteristics. It was concluded that neither the effluent suspended solids nor the return sludge concentration can be estimated with good accuracy from those parameters which are normally available to the design engineer. Recommendations for future work which would enable a more realistic approach to the preliminary design of final clarifiers are made.