| 摘要 |
PROBLEM TO BE SOLVED: To keep water quality of a water using part in a filtration system. SOLUTION: In this filtration system 1 in which a filtration means 4 removing impurities contained in circulation water with a filter medium is provided to a circulation line 3 circulating water of the water using part 2, the circulation flow rate is increased by a flow control valve 18 which is provided to the side of water to be treated in the circulation line 3, on the basis of turbidity of the circulation water or the detection value of a water quality detection means 20 for chromaticity. COPYRIGHT: (C)2008,JPO&INPIT
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