| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for detecting fracture of a filtration membrane by which the precision of fracture detection of a filtration membrane is improved. SOLUTION: In the method for detecting fracture of a filtration membrane of a membrane filtration module 1 having filtration membranes for separating and removing turbid matter contained in raw water and equipped with a turbidometer 3 for measuring the turbidity of the filtrate water filtered by the filtration membranes of the membrane filtration module 1, when flushing treatment is carried out for discharging water containing turbid matter which is separated from filtration membranes by back washing treatment and remains in primary side of the membrane filtration module 1 outside after the back washing treatment for separating the turbid matter adhering to the filtration membranes, a portion of the water containing the turbid matter remaining in the primary side of the membrane filtration module 1 is filtered by the filtration membranes and the turbidity of the filtrate water is measured by the turbidometer 3 and fracture of a filtration membrane is detected based on the turbidity of the measured filtrate water. COPYRIGHT: (C)2008,JPO&INPIT
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