| 摘要 |
PROBLEM TO BE SOLVED: To provide a water treatment device capable of surely cleaning a strainer without increasing a cleaning device cost and the amount of cleaning work for the strainer. SOLUTION: In back-washing, a back-wash pump 26 is driven and back-wash water is supplied to a membrane filtration device 18. Back-wash waste water of the membrane filtration device 18 is inducted to a strainer 16 keeping the discharge pressure as it is, and the strainer 16 is back-washed. COPYRIGHT: (C)2003,JPO
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