ACTIVATED SLUDGE TREATMENT METHOD OF WASTE WATER

摘要

ACTIVATED SLUDGE TREATMENT METHOD OF WASTE WATER The specification discloses an activated sludge treatment of waste water containing a BOD component which comprises (a) micronizing as far as possible the sludge in the waste water but avoiding damaging the cells of microorganisms contained therein, and adsorbing the BOD component to the micronized sludge, and (b) oxidizing the BOD component adsorbed to the sludge by blowing in an oxygen-containing gas and flocculating the sludge. By this method, the treatment of waste water can be accomplished with a shortened residence time compared with conventional procedures and excess sludge is produced in a considerably reduced amount.