Title:
WATER PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2016/084905
Kind Code:
A1
Abstract:
The present invention pertains to a water production method in which raw water or pretreated water thereof is supplied under pressure as supply water to a semi-permeable membrane module by means of a pressure-raising pump, and supply water is separated into concentrated water and low-concentration permeate, said method being characterized in that a scale-suppressing agent having a reduction function is intermittently or constantly added upstream of the semi-permeable membrane module, suppressing the occurrence of scale, and maintaining the redox potential of the supply water and/or concentrated water at or below a set value.
Inventors:
TANIGUCHI MASAHIDE (JP)
LAGREF JEAN-JACQUES (FR)
KALLENBERG KLAUS (CH)
LAGREF JEAN-JACQUES (FR)
KALLENBERG KLAUS (CH)
Application Number:
PCT/JP2015/083253
Publication Date:
June 02, 2016
Filing Date:
November 26, 2015
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C02F1/44; B01D61/04; B01D61/12; B01D61/58; B01D65/08; B01D71/56; C02F1/70; C02F1/76; C02F5/00; C02F5/08; C02F5/10; C02F5/14
Foreign References:
| JP2007152265A | 2007-06-21 | |||
| JP2012213686A | 2012-11-08 | |||
| JP2010201313A | 2010-09-16 | |||
| JP2012200696A | 2012-10-22 | |||
| JPH02115027A | 1990-04-27 | |||
| JP2008296188A | 2008-12-11 |
Other References:
See also references of EP 3225595A4
Attorney, Agent or Firm:
Eikoh Patent Firm, P. C. et al. (JP)
Patent business corporation glory patent firm (JP)
Patent business corporation glory patent firm (JP)
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