Title:
METHOD FOR OPERATING REVERSE OSMOSIS MEMBRANE DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/029162
Kind Code:
A1
Abstract:
Provided is a method for operating a reverse osmosis membrane device which has a reverse osmosis membrane element and in which treated water is obtained by passing water to be treated that contains a scale component through the reverse osmosis membrane device, said method being characterized in that: the reverse membrane element includes a reverse osmosis membrane and a flow path member; a dense layer of the reverse osmosis membrane contains carbon nanotubes and cellulose nanofibers; the flow path member contains carbon nanotubes; and a scale dispersant is added to the water to be treated.
Inventors:
KAWAKATSU TAKAHIRO (JP)
ISHII KAZUKI (JP)
YASUIKE TOMOHARU (JP)
ENDO MORINOBU (JP)
TAKEUCHI KENJI (JP)
KITANO HIROKI (JP)
FURUTA KEN (JP)
ISHII KAZUKI (JP)
YASUIKE TOMOHARU (JP)
ENDO MORINOBU (JP)
TAKEUCHI KENJI (JP)
KITANO HIROKI (JP)
FURUTA KEN (JP)
Application Number:
PCT/JP2023/018900
Publication Date:
February 08, 2024
Filing Date:
May 22, 2023
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
UNIV SHINSHU (JP)
KITAGAWA IND CO LTD (JP)
UNIV SHINSHU (JP)
KITAGAWA IND CO LTD (JP)
International Classes:
B01D61/10; B01D63/00; B01D65/02; B01D71/02; B01D71/10; C02F1/44; C02F5/00; C02F5/08; C02F5/10; C02F5/14
Domestic Patent References:
| WO2019131917A1 | 2019-07-04 | |||
| WO2022054688A1 | 2022-03-17 |
Foreign References:
| JP2021122767A | 2021-08-30 | |||
| JP6999958B2 | 2022-02-10 | |||
| JP2018051498A | 2018-04-05 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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