| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric deionizer capable of being operated inexpensively and efficiently for a long period of time without producing scale even if hardness components are incorporated in water to be treated. SOLUTION: This electric deionizer has a condensing chamber 15 and a desalting chamber 16 formed by alternately disposing multiple anion exchange membranes 13 and cation exchange membranes 14, between a negative electrode 12 and a positive electrode 11, and is composed by partitioning the inside of the condensing chamber 15 into a negative electrode side partitioned chamber 15A and a positive electrode side partitioned chamber 15B by providing a bipolar membrane 20 in the condensing chamber 15. At least part of condensed water of the negative electrode side partitioned chamber 15A is supplied to the desalting chamber 16 as the water to be treated, and also is supplied to the positive electrode side partitioned chamber 15B. COPYRIGHT: (C)2008,JPO&INPIT
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