| Main Title |
Experimental evaluation of oxygen and air activated sludge nitrification systems with and without pH control / |
| Author |
Heidman, James A.
|
| CORP Author |
District of Columbia Dept. of Environmental Services, Washington.;Municipal Environmental Research Lab., Cincinnati, Ohio. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development,Municipal Environmental Research Laboratory, |
| Year Published |
1976 |
| Report Number |
EPA-600/2-76-180; EPA-68-03-0349; EPA-ROAP21-ASR; 026 |
| Stock Number |
PB-262 197 |
| OCLC Number |
07879314 |
| Subjects |
Sewage--Purification--Activated sludge process ;
Sewage--Purification--Oxidation
|
| Additional Subjects |
Sewage treatment ;
Activated sludge process ;
Nitrification ;
Oxygenation ;
Performance evaluation ;
Ammonia ;
pH ;
Calcium oxides ;
Settling ;
Reaction kinetics ;
Tables(Data) ;
District of Columbia
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-2-76-180 |
c.1 |
Headquarters Library/Washington,DC |
02/25/2014 |
| ELBD ARCHIVE |
EPA 600-2-76-180 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 600-2-76-180 |
repository copy |
AWBERC Library/Cincinnati,OH |
10/17/2014 |
| ESAD |
EPA 600-2-76-180 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-262 197 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
ix, 57 p. : ill.; 28 cm. |
| Abstract |
The nitrification capabilities of two oxygen activated sludge systems receiving District of Columbia secondary effluent at a steady state flow of 190 cu m/day (50,000 gpd) were evaluated. The pH of one system was controlled to maintain a pH of 7.0 in the last reactor pass of the four-pass system. The pH of the second system was uncontrolled and reactor pH values of 5.5-6.0 were common. Also parallel air and oxygen nitrification systems both with pH control were evaluated under similar operating conditions. Parameters used to compare the systems included effluent quality, sludge settling rates, lime dosage, sludge production and nitrification kinetic rates. |
| Notes |
Bibliography p. 55-56. |
