| 摘要 |
PROBLEM TO BE SOLVED: To provide an immersion type membrane separation apparatus which carries out uniform and stable cleaning to each membrane element and exhibits an excellent performance about whole processing amount and maintenance cost, and also to provide a water production method using the same. SOLUTION: The immersion type membrane separation apparatus has a case body in which a plurality of membrane elements are arranged and stored with the direction of a membrane surface parallel to a vertical direction inside and a membrane module having an aeration device at a position below the case body. A plurality of straightening vanes are extended in a pair in the direction in which the membrane surface of the membrane element turns orthogonal to a surface direction of the straightening vane outside the case body. The immersion type membrane separation apparatus has external aeration devices having an aeration function in a position outside the case body in the direction orthogonal to the direction of the membrane surface of the membrane element. The water production method uses the immersion type membrane separation apparatus. COPYRIGHT: (C)2008,JPO&INPIT
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