Title:
ANTIFREEZING METHOD FOR POROUS MEMBRANE
Document Type and Number:
Japanese Patent JP2012217901
Kind Code:
A
Abstract:
To prevent damage and deterioration caused by freezing of a porous membrane and to reduce a load applied to washing and waste liquid treatment before the use of a membrane module.
The porous membrane used for the membrane module is dipped in an aqueous solution that contains an extract containing polyphenol derived from a litchi pericarp, or tannin derived from nutgalls.
Inventors:
ARAKI EMI
ISHIBASHI YUZURU
ISHIBASHI YUZURU
Application Number:
JP2011084824A
Publication Date:
November 12, 2012
Filing Date:
April 06, 2011
Export Citation:
Assignee:
ASAHI KASEI CHEMICALS CORP
International Classes:
B01D65/00
Domestic Patent References:
| JP2007000790A | 2007-01-11 |
Foreign References:
| WO2008007684A1 | 2008-01-17 |