TREATMENT CAPACITY RECOVERY METHOD FOR ACTIVE SLUDGE TANK

摘要

PURPOSE:To recover the capacity in a period shorter than heretofore required when the drainage treatment capacity of an active sludge tank is lowered because of the variation in water quality. CONSTITUTION:A number of bacteria relating to the organic substance decomposition are separated from an active sludge tank representing good drainage treatment capacity, and the characteristics of the bacteria are confirmed and preserved. When the properties of active sludge is changed because the variation of water quality and the drainage treatment capacity is lowered, bacteria with which no resistance to the variation of water quality are selected out of the separated and preserved bacteria, and cultured in a perfect neutrified medium, anti proliferated bacteria are put into an active sludge tank.