| 摘要 |
The present invention provides a membrane filtration device comprising: a membrane filtration part for membrane filtration treating inflowing water; a membrane filtration treated water storage part for storing the treated water treated in the membrane filtration part; a concentrate water treatment part for treating concentrate water discarded after the membrane filtration treatment in the membrane filtration part; a cyclone treatment part for, when in a cleaning mode for backwashing the membrane filtration part, separating and concentrating, as up-flow, backwashed concentrate water discarded after backwashing; and a microbubble generation part (321) for flushing the membrane filtration part by generating microbubbles when in the cleaning mode. Accordingly, a high recovery rate of 98% or more may be obtained while adopting one membrane filtration part. |
