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Title:
METHOD FOR OPERATING ION EXCHANGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/032315
Kind Code:
A1
Abstract:
The method for operating an ion exchange device employed in the present invention involves: measuring, during a cycle of water flowing and regeneration, a raw water load which is the product of the flow rate of raw water in a water flowing step and the ion concentration of a target component in the raw water; calculating, through simulation, a predicted amount of water that can be sampled by an ion exchange resin on the basis of the raw water load, wherein, in the simulation, performance change tendency information pertaining to the ion exchange resin is preliminarily acquired, and the simulation is conducted while correcting simulation conditions in consideration of the performance change tendency information; setting a water sampling amount controlling value on the basis of the calculated predicted amount of water that can be sampled; and switching from the water flowing step to a regeneration step at the time when the amount of sampled raw water in the water flowing step reaches the water sampling amount controlling value.

Inventors:
OKUMURA MASATAKE (JP)
UEDA HIROKO (JP)
MIYAJI MIDORI (JP)
Application Number:
PCT/JP2022/012966
Publication Date:
March 09, 2023
Filing Date:
March 22, 2022
Export Citation:
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Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F1/42; B01J49/85
Foreign References:
JPH0655082A1994-03-01
JP2015226866A2015-12-17
US20100224564A12010-09-09
JP2016180592A2016-10-13
JPH0743365B21995-05-15
JP2012205996A2012-10-25
JP2018038989A2018-03-15
JP2015013276A2015-01-22
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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