| 摘要 |
The present invention provides a membrane filtration device comprising: a membrane filtration part for conducting the membrane filtration of incoming water; a membrane-filtered water storage part for storing the treated water that has been treated in the membrane filtration part; a concentrate treatment part for treating concentrate dumped after the membrane filtration in the membrane filtration part; a cyclone treatment part for separating and concentrating, as upward flow, backwashing concentrate that is dumped after backwashing in a washing mode of backwashing the membrane filtration part; and a microbubble generation part (321) for flushing the membrane filtration part by generating micorbubbles in the washing mode. Accordingly, a high recovery rate equal to or higher than 98% can be obtained while one membrane filtration part is adopted. |
