| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a membrane separation oxidation ditch which enables the treatment of waste water by combining an oxidation ditch method and a membrane separation activated sludge method in one tank and facilitates construction work without completely draining the inside of a membrane filtration tank when the repair and replacement work of a membrane separator is required. <P>SOLUTION: The membrane filtration tank 2 is arranged at the center part so as to form a circulation water channel 11 along the inner peripheral face of an oxidation ditch reactor 1; and opening parts 22a, 22b, 23a and 23b for waste water circulation which divide the inside of the membrane filtration tank 2 so as to partition it into a plurality of membrane filtration chambers 2a and 2b, and arrange a switchable gate between each of the membrane filtration chambers 2a and 2b installed with the membrane separators 21a and 21b, and the circulation water channel 11 on the outer peripheral side of the membrane filtration tank 2. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
