| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric regenerative demineralizer which has a high removal perfor mance to a weak negative ion component and is relatively small-sized. <P>SOLUTION: The electric regenerative demineralizer is provided with a cathode chamber 2 having a cathode 1, an anode chamber 4 having an anode 3, one or more concentration chambers 8 constituted by disposing cation exchange membranes 6 on the anode 3 side and the anion exchange membranes 5 on the cathode 1 side between both electrodes, and the desalting chambers 7 in which a plurality of desalting chambers 7 among the following desalting chambers (a)-(e) are disposed and the ion exchange membranes are packed in the inside disposed with the following (a)-(e): (a) the desalting chamber 7 in which the cation exchange membrane 6 is disposed on the cathode 1 side and the anion exchange membrane 5 is disposed on the anode 3 side, (b) the desalting chamber 7 in which the cation exchange membranes 6 are disposed on both sides, c the desalting chamber 7 in which the anion exchange membranes 5 are disposed on both sides, (d) the desalting chamber 7 in which the cation exchange membrane 6 is disposed on the cathode 1 side and a bipolar membrane is disposed on the anode 3 side, and (e) the desalting chamber 7 in which the bipolar membrane is disposed on the cathode 1 side and the anion exchange membrane 5 is disposed on the anode 3 side. The electric regenerative demineralizer has the single desalting chamber 7 in which the concentration chambers 8, the anode chambers 4 or the cathode chambers 2 are disposed on both sides and a desalting chamber 7 group in which the desalting chambers 7 are plurality arranged in the adjacent relation respectively by one or more without interposing the concentration chamber 8. Therein, the outlets of the desalting chamber 7 group are connected with the inlet of the single desalting chamber 7 or the outlet of the single desalting chamber 7 is connected with the inlets of the desalting chamber 7 group. <P>COPYRIGHT: (C)2004,JPO |
