Title:
METHOD FOR REGENERATING SEPARATION MEMBRANE MODULE
Document Type and Number:
WIPO Patent Application WO/2018/066631
Kind Code:
A1
Abstract:
[Problem] To provide a method for regenerating a composite membrane module, which has been decreased in the performance, by means of chemical cleaning with use of sodium hypochlorite, an acid, an alkali and the like.
[Solution] A method for regenerating a membrane module that is obtained by incorporating a composite membrane having a first separation layer that is disposed on one surface of a porous supporting membrane and is configured from an anionic polymer and a second separation layer that is disposed on the surface of the first separation layer and is configured from at least one cationic or anionic ionomer. This method for regenerating a membrane module is characterized by sequentially performing a step wherein at least one cationic polymer solution or anionic polymer solution is brought into contact with the separation layer-side surface of the composite membrane and a step wherein a crosslinking agent solution is brought into contact with the separation layer-side surface.
Inventors:
OHKAME TAKASHI (JP)
Application Number:
PCT/JP2017/036221
Publication Date:
April 12, 2018
Filing Date:
October 05, 2017
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B01D65/10
Domestic Patent References:
| WO2015141653A1 | 2015-09-24 | |||
| WO2017064936A1 | 2017-04-20 |
Foreign References:
| JP2014128760A | 2014-07-10 | |||
| JP2012250192A | 2012-12-20 | |||
| JP2012213686A | 2012-11-08 |
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