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Title:
MEMBRANE DISTILLATION DEVICE AND METHOD FOR OPERATING SAME
Document Type and Number:
WIPO Patent Application WO/2022/030044
Kind Code:
A1
Abstract:
In the present invention, a liquid to be treated in a water supply tank 1 is supplied to hollow fibers 11 of a membrane module 10 via a water supply pump 2, a pipe 3, a heat exchanger 4, and a pipe 5, and returns to the water supply tank 1. The pressure of a secondary side 17 is reduced by a pressure reduction device 25. The water of the liquid to be treated which is flowing through the hollow fibers 11 evaporates, and is suctioned and discharged from the secondary side 17 to a pipe 20. A water supply tank gas phase part 1a and the secondary side 17 communicate with each other via a pipe 7 and a valve 8, and the pressure difference p1 - p2 between the water supply tank gas phase part 1a and the secondary side 17 is 20-90 kPa.

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Inventors:
MASUDA HARUKI (JP)
TAKAHASHI JUNICHI (JP)
Application Number:
PCT/JP2021/011887
Publication Date:
February 10, 2022
Filing Date:
March 23, 2021
Export Citation:
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Assignee:
KURITA WATER IND LTD (JP)
International Classes:
B01D61/36
Foreign References:
JP2018083189A2018-05-31
JP2015100776A2015-06-04
JPH04346823A1992-12-02
CN108704484A2018-10-26
US20170354931A12017-12-14
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
Download PDF:
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