Title:
ELECTRODEIONIZATION SYSTEM AND CONTROL METHOD FOR ELECTRODEIONIZATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/215475
Kind Code:
A1
Abstract:
The present invention provides: an electrodeionization system 1 equipped with a plurality of electrodeionization devices 1A provided in parallel, the electrodeionization system comprising: a water supply flow rate changing means for changing the flow rate of water supplied to the plurality of electrodeionization devices 1A; a concentrated water flow rate adjusting means for adjusting, for each electrodeionization device 1A, the flow rate of concentrated water W4 discharged from each of the plurality of electrodeionization devices 1A; and a concentrated water flow rate maintaining means for maintaining the flow rate of concentrated water W4 discharged from each of the plurality of electrodeionization devices 1A to be a certain level or higher, wherein the concentrated water flow rate maintaining means is provided only in a main flow path 23 in which a plurality of sub-flow paths 22, through which desalted water W2 produced in each of the plurality of electrodeionization devices 1A flows, are integrated, and a main path 25 in which a plurality of sub-paths 24, through which the concentrated water W4 discharged from each of the plurality of electrodeionization devices 1A flows, are integrated; and a control method for the electrodeionization system 1. According to the present invention, an electrodeionization system equipped with a plurality of electrodeionization devices and capable of reducing production costs while suppressing the generation of scale due to a decrease in the flow rate of water supplied to each electrodeionization device, and a control method therefor can be provided.
Inventors:
MINATO YASUHARU (JP)
TABEI RENA (JP)
TABEI RENA (JP)
Application Number:
PCT/JP2022/012163
Publication Date:
October 13, 2022
Filing Date:
March 17, 2022
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F1/469; B01D61/54
Foreign References:
| CN106927608A | 2017-07-07 | |||
| CN106380032A | 2017-02-08 | |||
| JP2005515877A | 2005-06-02 | |||
| CN112079495A | 2020-12-15 | |||
| JP2014104401A | 2014-06-09 | |||
| JP2010058013A | 2010-03-18 | |||
| JPS6336893A | 1988-02-17 | |||
| JP2018034103A | 2018-03-08 |
Attorney, Agent or Firm:
HAYAKAWA Yuzi et al. (JP)
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