Main Title |
Operational Stability of the Extended Aeration Process. |
Author |
Gaudy, J, A. F. ;
|
CORP Author |
Oklahoma State Univ., Stillwater. Dept. of Civil Engineering. |
Year Published |
1971 |
Report Number |
OWRR-A-017-OKLA; 04784; A-017-OKLA(1) |
Stock Number |
PB-206 909 |
Additional Subjects |
( Activated sludge process ;
Sludge digestion) ;
( Sewage treatment ;
Activated sludge process) ;
( Aeration ;
Activated sludge process) ;
Digestion(Decomposition) ;
Pilot plants ;
Metabolism ;
Biomass ;
Aerobic processes ;
Biodecomposition ;
Hydrolysis ;
Suspended sediments ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-206 909 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
330p |
Abstract |
The project was initiated to determine if any activated sludge process could operate with total cell recycle over an extended period of time. Previous researchers had concluded that such a process (the extended aeration or total oxidation activated sludge process) could not function and that cell or sludge wastage would be necessary. A laboratory scale pilot plant activated sludge process was operated in which positive control of sludge retention in the system was obtained by passing all contents through a centrifuge and returning the separated biomass to the aeration chamber. This system was operated for three years and there was no evidence of metabolic failure; excellent purification was obtained. It was found that hydrolyzed sludge was a readily available substrate for the remaining (unhydrolyzed) sludge. Laboratory pilot plant research has been accomplished which indicates that the new process holds considerable promise. (Author) |