Main Title |
Feasibility of Hydrolysis of Sludge Using Low Pressure Steam with SO2 as a Hydrolytic Adjunct and Utilization of the Resulting Hydrolysate. |
CORP Author |
Federal Water Pollution Control Administration, Washington, D.C. |
Year Published |
1969 |
Report Number |
FWPCA-17070-EKN-12/69; 00164; |
Stock Number |
PB-194 784 |
Additional Subjects |
( Sewage treatment ;
Sludge disposal) ;
( Activated sludge process ;
Hydrolysis) ;
( Sludge disposal ;
Hydrolysis) ;
( Feeding stuffs ;
Sludge) ;
Sulfurous acid ;
Proteins ;
Filtration ;
Waste disposal ;
Reduction(Chemistry) ;
Sulfur dioxide ;
Concentrating ;
Molasses ;
Cost estimates ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-194 784 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
38p |
Abstract |
Sulfurous acid, when used with hydrolysis in the treatment of activated sludge, will increase soluble solids, improve filtration efficiencies and reduce moisture content of the resultant filter cake. Use of a 0.5% sulfurous acid and hydrolytic treatment of sludge at 140 degrees C for one hour increased the soluble solids content of the activated sludge by 20%. Concentration of the solubilized extract produced a syrup; 85% of the solids content of the syrup was organic. By TKN estimates, over 20% of these solids were proteinaceous. An amino acid analysis indicated it could be of value as an animal feed, and this was confirmed in rat feeding studies (at a 10% level in the diets) showing an efficiency of food utilization of 42 for the organic molasses as compared to 39 for cane molasses. (WRSIC abstract) |
Supplementary Notes |
Prepared in cooperation with Snell (Foster D.), Inc., Florham Park, N.J., Contract DI-14-12-188. |
NTIS Title Notes |
Water pollusion control research series. |
PUB Date Free Form |
Dec 69, |
Category Codes |
13B; 68D |
NTIS Prices |
PC A03 MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326513296 |
Origin |
NTIS |
Type |
CAT |