| Main Title |
Stabilization of Sewage Solids by the Channel Aeration Process. |
| Author |
Wehkin, Milan W. ;
Bostrac, Jack M. ;
Monett, Larry J. ;
Hanse, Larry D. ;
|
| CORP Author |
Wisconsin Univ., River Falls. |
| Year Published |
1973 |
| Report Number |
EPA-17070-DIZ; 12502,; R2-72-213 |
| Stock Number |
PB-223 134 |
| Additional Subjects |
( Sludge disposal ;
Aerobic processes) ;
( Lagoons(Ponds) ;
Sludge disposal) ;
( Sewage treatment ;
Sludge disposal) ;
Digestion(Decomposition) ;
Performance evaluation ;
Dissolved gases ;
Oxygen ;
Cost estimates ;
Aeration ponds
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-223 134 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
95p |
| Abstract |
The report discusses research which found that the use of an oxidation ditch for treatment of domestic sewage sludges by aerobic digestion was superior to anaerobic digestion. Maximum reductions of 64.7% for volatile solids and 67.8% for COD were achieved. At moderate temperatures the DO content of the mixed liquor appears to be the factor limiting COD and volatile solids reductions. When the DO content exceeds 1.5 ppm the reductions of COD and volatile solids reached their maximum values, however, nitrate and phosphate concentrations in the mixed liquor increased to values of 30 ppm and 115 ppm respectively. The dewatering characteristics of the digested sludge were found to be no better than those of raw sludge. Evidence also indicates that this process is better suited to continuous rather than semi-continuous operation costs are reported. |
