| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-line washing method for recovering water permeation performance of a membrane module. SOLUTION: This on-line washing method washing a membrane module used for a water filtration system in a mounted state on the filtration system, comprises processes for: circulating a chemical solution to the membrane module, dipping the membrane module in the chemical solution, and discharging the chemical solution in the membrane module with water. These processes as one washing cycle, are repeated one or two or more cycles. COPYRIGHT: (C)2007,JPO&INPIT
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