Organic wastewater treatment apparatus and method by anaerobic aerobic filter method

摘要

PROBLEM TO BE SOLVED: To provide an organic waste water treating device and method capable of omitting blowers for ventilation and efficiently carrying out deodorization treatment. SOLUTION: This device consists of a first anaerobic treating vessel A which is lined up with anaerobic contact filter media in the form of a plurality of masses or assemblage having a spread in a transverse direction at prescribed intervals in the transverse direction in order to subject inflow organic waste water to digestion treatment and is disposed with these contact filter media in a plurality of stages so as to overlap partly one above the other at the prescribed intervals, a second anaerobic treating vessel C which is packed with the arbitrary contact filter media and an aerobic treating vessel B which has a means for subjecting the water to oxidation treatment by the blast from a blower BL1 for aeration. The device has exhaust ducts 20, 21 and 22 which communicate with the upper space of the aerobic treating vessel B, the upper space of the second anaerobic treating vessel C, the upper space of the first anaerobic treating vessel A and deodorizing device 30. The discharge side of the deodorizing device 30 is provided with an auxiliary suction blower BL2 in such a manner that the inside of the exhaust system holds negative pressure to atm. pressure.