| 摘要 |
PROBLEM TO BE SOLVED: To provide a system and a method for treating water which can treat raw water, even containing oil and a surfactant, by efficiently using a separation membrane. SOLUTION: The system for treating water includes a first stage membrane separator and a second stage membrane separator. In the first stage membrane separator and the second stage membrane separator, the first separation membrane and the second separation membrane each having a desalting function are used. The first separation membrane 31 includes a substrate 32 and a separation active layer 33. The substrate 32 is equipped with filtration holes 32b. The separation active layer 33 is installed on the raw water side surface 32a of the substrate 32, is permeable and hydrophilic, and is electrically charged. COPYRIGHT: (C)2011,JPO&INPIT
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