| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a mobile membrane separation unit capable of selectively performing a BOD treatment and a nitrification and denitrification treatment and coping with a variation of the load of an inflow quantity of contaminated water with a lamited tank volume. SOLUTION: This unit is provided with a main body tank 1 for subjecting contaminated water to be treated in the tank to activated sludge treatment, a partitioning wall 2 which is installed in the main body tank 1 in freely attachably and detachably, and partitions the tank inside into a front stage region 1a and a post stage region 1b, and where the upper end edge 2a is immersed under a standard set water level, plural membrane separation devices 3 immersed into both the regions, an air spraying devices 5 arranged at the lower parts of the respective separation devices 3, and a circulation pump 10 for feeding the contaminated water in the tank from the front stage region 1a to the post stage region 1b.</p> |
