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Title:
MEMBRANE SEPARATION METHOD
Document Type and Number:
Japanese Patent JP2022111534
Kind Code:
A
Abstract:
To provide a technique capable of operating longer term in an aqueous system assembled with a membrane separation unit.SOLUTION: In a membrane separation method, a combined chlorine-type oxidant is allowed to be included in water to be treated, the water to be treated including this combined chlorine-type oxidant is conducted in a membrane separation unit, wherein the water to be treated including the combined chlorine-type oxidant is water to be treated having Free 300 sec value which is a chlorine concentration measuring result after 300 sec with a free chlorine measuring reagent of 0.036 mg/L-Cl2 or over.SELECTED DRAWING: None

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Inventors:
OTSUKA YUTA
HAYAKAWA KUNIHIRO
NAKAGAWA TAKESHI
Application Number:
JP2021007020A
Publication Date:
August 01, 2022
Filing Date:
January 20, 2021
Export Citation:
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Assignee:
KURITA WATER IND LTD
International Classes:
C02F1/44; B01D65/08; C02F1/50
Domestic Patent References:
JP2018176116A2018-11-15
Foreign References:
WO2013005787A12013-01-10
KR20200138965A2020-12-11
Attorney, Agent or Firm:
Kaoru Watanabe
Miwako Inoue
Masahiro Matsuda



 
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