Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Advanced automatic control strategies for the activated sludge treatment process,
Author Petersack, Joseph F. ; Smith., Richard G.
Other Authors
Author Title of a Work
Smith, Richard G.
CORP Author Systems Control, Inc., Palo Alto, Calif.;National Environmental Research Center, Cincinnati, Ohio. Advanced Waste Treatment Research Lab.
Publisher National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1975
Report Number EPA-670/2-75-039; EPA-R800356; EPA-ROAP-21ASC-007
Stock Number PB-246 726
OCLC Number 01456222
Subjects Sewage disposal plants--Automation. ; Water treatment plants--Automation. ; Sewage--Purification--Activated sludge process.
Additional Subjects Sewage treatment ; Activated sludge process ; Automatic control ; Dissolved gases ; Oxygen ; Biochemical oxygen demand ; Performance ; Operating costs ; Surveys ; Diagrams ; Flow charting ; Experimental design ; Reliability ; Digital computers ; California ; Dissolved oxygen ; Suspended solids ; Palo Alto(California)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EIAD  EPA-670/2-75-039 Region 2 Library/New York,NY 10/24/2003 DISPERSAL
EJBD ARCHIVE EPA 670-2-75-039 Headquarters Library/Washington,DC 05/20/2013
EJBD  EPA 670-2-75-039 Headquarters Library/Washington,DC 12/31/2014
EKAM  TD756.P48 Region 4 Library/Atlanta,GA 12/31/1998
ELBD RPS EPA 670-2-75-039 repository copy AWBERC Library/Cincinnati,OH 09/01/2020
NTIS  PB-246 726 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation ix, 155 pages illustrations 27 cm.
Results of a demonstration of the feasibility and benefits of applying several advanced wastewater treatment control strategies in an operational treatment plant using a digital computer are presented in this report. The work was conducted in a full size (35 MGD capacity) secondary treatment plant at Palo Alto, California. Control strategies tested were for the secondary treatment portion of the process and involved regulation of aeration tank dissolved oxygen (DO) and food for microorganism ratio (F/M). Two variations of F/M ratio control were evaluated using respectively air flow and a direct measurement of sludge respiration with an on-line respirometer to estimate food (BOD). An extensive data collection program was incorporated which allowed detailed statistical evaluation of each control algorithm with regard to performance, effluent quality impact, operating costs, and reliability, comparison was made to similar data collected during benchmark manual operation tests. Overall results indicate digital control using advanced control concepts is feasible and that demonstrable improvements in effluent quality are obtained. Direct operating cost savings in the form of an 11% reduction in air use was also shown for DO control.
"Program element no. 1BB043." Includes bibliographical references (pages 89-90).