Title:
DESALINATION METHOD AND DESALINATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2014/132888
Kind Code:
A1
Abstract:
A desalination device for desalinating water of interest is equipped with: a pair of electrodes having such a property that the polarity of a direct-current voltage to be applied to the electrodes can be reversed; a bipolar membrane; and an ion exchange zone in which a cation exchanger and an anion exchanger are arranged in a mixed state. Both of the bipolar membrane and the ion exchange zone are arranged in a space to which a voltage can be applied through the pair of electrodes. The cation exchanger is, for example, a weakly acidic cation exchanger, and the anion exchanger is, for example, a weakly basic anion exchanger.
A desalination treatment of water of interest is carried out by passing the water through the apparatus while applying a voltage between the pair of electrodes in such a manner that one of the electrodes which faces a cation exchange membrane in the bipolar membrane acts as an anode and the other of the electrodes which faces an anion exchange membrane in the bipolar membrane acts as a cathode. When a regeneration treatment is to be carried out, the polarity of a direct-current voltage to be applied to the pair of electrodes is reversed.
Inventors:
SUMIDA YASUMITSU (JP)
YAMANAKA KOJI (JP)
YAMANAKA KOJI (JP)
Application Number:
PCT/JP2014/054157
Publication Date:
September 04, 2014
Filing Date:
February 21, 2014
Export Citation:
Assignee:
ORGANO CORP (JP)
International Classes:
C02F1/42; B01J49/00; C02F1/46
Foreign References:
| JP2010194026A | 2010-09-09 | |||
| JPH11319838A | 1999-11-24 | |||
| JPH07316865A | 1995-12-05 | |||
| JP2001340863A | 2001-12-11 | |||
| JPH01151911A | 1989-06-14 | |||
| JP2006043549A | 2006-02-16 | |||
| US20110042214A1 | 2011-02-24 |
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)
Akio Miyazaki (JP)
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