TREATMENT METHOD AND APPARATUS OF ORGANIC WASTEWATER BY ACTIVATED SLUDGE

摘要

PROBLEM TO BE SOLVED: To provide a wastewater treatment technique capable of stably controlling the quality of treated water in the biological treatment of organic wastewater by activated sludge accompanying the decomposition pretreatment of activated sludge. SOLUTION: In an activated sludge tank in which the material to be decomposed of activated sludge and organic wastewater are housed, the organic wastewater is treated so that the material to be decomposed contained in treated water is selectively left in the treated water to obtain measuring target treated water from a part of the treated water produced by the biological treatment of the organic wastewater by activated sludge to be discharged from the activated sludge tank and the turbidity of the measuring target treated water to control the decomposition pretreatment of activated sludge corresponding to the obtained measured value. COPYRIGHT: (C)2010,JPO&INPIT