BACTERIA IMMOBILIZED CARRIER SEPARATING METHOD AND TREATMENT METHOD OF WASTE WATER UTILIZING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a bacteria immobilized carrier separating method easy in maintenance, requiring no wide space and hard to damage a bacteria immobilized carrier and a waste water treatment method utilizing the same. SOLUTION: A centrifugal classifier 6 separating a bacteria immobilized carrier 5 from waste water by utilizing a head is installed in the vicinity of the outlet of a reaction tank in which a bacteria immobilized carrier 5 is charged or at the part between the reaction tank and a next reaction tank. By this constitution, the separated bacteria immobilized carrier 5 is returned to an upstream side and the concn. of the bacteria immobilized carrier is uniformized. This centrifugal classifier 6 requires no large power different from a pump and has no possibility of clogging and does not damage the bacteria immobilized carrier 5.