| 摘要 |
PROBLEM TO BE SOLVED: To provide a membrane filtration system capable of preventing or reducing clogging of a membrane with a flocculant added to flocculate organic matters contained in raw water such as raw city water.SOLUTION: A membrane filtration system used in water treatment includes flocculant infusing means for infusing an excessive amount of a flocculant to flocculate organic matters that are contained in raw water and cause clogging of a membrane, microbubble injecting means for injecting microbubbles necessary to enlarge an extra part of the flocculant that does not work in flocculating the organic matters that cause clogging of a membrane, and membrane filtration means for filtrating object water to be treated into which the microbubbles are injected.SELECTED DRAWING: Figure 1 |
