Title:
FORWARD OSMOSIS MEMBRANE MODULE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/276642
Kind Code:
A1
Abstract:
Provided is a forward osmosis membrane module composed of a plurality of hollow-fiber forward osmosis membranes. The forward osmosis membranes are each provided with a separation function layer on a surface of a hollow-fiber support membrane having a porous support body. The membrane surface area of the forward osmosis membrane module is 0.1 m2 or more. The porous support body is such that the porosity of a dense layer up to 1.0 µm from the interface with the separation function layer is 40% or less. The average thickness of the separation function layer is 2.0 µm or less, and the variation coefficient of the average thickness of the separation function layer is 30% or less in the radial direction and longitudinal direction of the forward osmosis membrane module.
Inventors:
HOTTA DAISUKE (JP)
Application Number:
PCT/JP2022/023659
Publication Date:
January 05, 2023
Filing Date:
June 13, 2022
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
B01D61/00; B01D63/02; B01D69/00; B01D69/02; B01D69/08; B01D69/10; B01D69/12; B01D71/56; B01D71/68
Domestic Patent References:
| WO2020241860A1 | 2020-12-03 | |||
| WO2019131304A1 | 2019-07-04 | |||
| WO2020241860A1 | 2020-12-03 |
Foreign References:
| JP2019115897A | 2019-07-18 | |||
| JP2011194272A | 2011-10-06 | |||
| JP2018039003A | 2018-03-15 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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