| Main Title |
Aerobic stabilization of waste activated sludge : an experimental investigation / |
| Author |
Cohen, David B.,
|
| Other Authors |
|
| Publisher |
Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
| Year Published |
1975 |
| Report Number |
EPA-600/2-75-035; EPA-68-03-0152; EPA-ROAP-21ASD-17 |
| Stock Number |
PB-246 593 |
| OCLC Number |
01979422 |
| Subjects |
Sewage disposal plants--Pilot plants ;
Sewage--Purification--Activated sludge process
|
| Additional Subjects |
Sewage treatment ;
Activated sludge process ;
Aerobic processes ;
Sludge digestion ;
Biochemical oxygen demand ;
Metabolism ;
Design criteria ;
Biomass ;
Oxygenation ;
Dissolved gases ;
Performance evaluation ;
Cost analysis ;
Colorado ;
Aeration ;
Suspended solids ;
Denver(Colorado)
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-2-75-035 |
|
Headquarters Library/Washington,DC |
05/14/2013 |
| EKBD |
EPA-600/2-75-035 |
|
Research Triangle Park Library/RTP, NC |
06/13/2003 |
| ELBD ARCHIVE |
EPA 600-2-75-035 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| EMBD |
EPA/600/2-75/035 |
|
NRMRL/GWERD Library/Ada,OK |
02/03/1995 |
| ESAD |
EPA 600-2-75-035 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-246 593 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
xii, 175 pages : illustrations ; 27 cm |
| Abstract |
Metro Denver Sewage Disposal District No. 1 (Metro) in 1970 converted excess secondary aerators to aerobic digesters. The plant scale diffused air system was compared with a pilot scale open tank oxygen system using very fine bubble fixed and rotating diffusers. For the air system volatile suspended solids (VSS) reductions ranged between 11.2% and 47.2%. A significant correlation was observed between VSS reduction and detention time-temperature factor. Cold shock eliminated nitrification for a five month period. When invertebrates, particularly rotifers, comprised a significant fraction of the biomass, digestion was maximal. The pollutant concentration in the supernatant from the aerobic digester averaged 10% of that from an anaerobic digester. For the oxygen batch tests, biodegradable VSS digestion rate coefficient k averaged 0.27. No correlation was observed between DO concentration and VSS reduction rates. The temperature of the oxygen digested biomass increased with increased loadings. |
| Notes |
Report prepared by Metropolitan Denver Sewage Disposal District No. 1, Commerce City, Colorado, and F.M.C. Corporation - MAROX Systems, Englewood, Colorado, under Contract no. 68-03-0152. Includes bibliographical references (pages 172-173). |
