WASTEWATER AND/OR RAW SEWAGE TREATMENT BY FERMENTATION TO FORM A CLARIFIED PRODUCT BEFORE SUPPLYING THE TREATED PRODUCT TO AN ACTIVATED SLUDGE TREATMENT PLANT

摘要

PCT No. PCT/AU90/00230 Sec. 371 Date Jan. 24, 1992 Sec. 102(e) Date Jan. 24, 1992 PCT Filed May 31, 1990 PCT Pub. No. WO90/15029 PCT Pub. Date Dec. 13, 1990.An activated sludge treatment process is disclosed wherein a sewage sludge component is fermented for a period of at least 15 days to form soluble carbonaceous substrates, the fermented sludge component is contacted with influent sewage to form a conditioned sewage, and the conditioned sewage is supplied to the activated sludge plant.