| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a starting-up method of a membrane separation activated sludge treatment device, which suppresses generation of a causative substance of membrane fouling and secures a predetermined treatment flow rate in a short period of time by gradually lowering from a value of a BOD/SS load of seed sludge to a value of a BOD/SS load which is most suitable to membrane separation activated sludge. <P>SOLUTION: In the starting-up method of the membrane separation activated sludge treatment device using surplus sludge or activated sludge from other water treatment device as the seed sludge, the surplus sludge or the activated sludge from the other water treatment device which is operated and controlled by a higher BOD/SS load than a predetermined BOD/SS load is used as the seed sludge, and a reduction speed of the BOD/SS load per day is maintained to a speed lower than 0.04 BOD/gMLSS/d to reduce to the predetermined BOD/SS load. <P>COPYRIGHT: (C)2013,JPO&INPIT |
