Title:
METHOD OF REGENERATING MEMBER AND METHOD OF SEAWATER DESALINATION
Document Type and Number:
WIPO Patent Application WO/2019/142945
Kind Code:
A1
Abstract:
This method, for regenerating a member used in a device that treats seawater 3, involves a cleaning step for removing deposits from the member. In the cleaning step, a first chemical solution 1 containing an acid other than hydroxydicarboxylic acid and a second chemical solution 2 containing hydrogen peroxide, a heavy metal compound and hydroxydicarboxylic acid are used.
Inventors:
GOJO YUTAKA (JP)
YOSHIDA TAKAHIDE (JP)
YOSHIDA TAKAHIDE (JP)
Application Number:
PCT/JP2019/001911
Publication Date:
July 25, 2019
Filing Date:
January 22, 2019
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C02F1/44; B01D61/02; B01D65/06; C11D7/10; C11D7/18; C11D7/26
Domestic Patent References:
WO2008120509A1 | 2008-10-09 |
Foreign References:
JPS6380804A | 1988-04-11 | |||
JP2015123430A | 2015-07-06 | |||
EP1652571A1 | 2006-05-03 | |||
KR101078046B1 | 2011-10-28 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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