Title:
WATER TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2013/038933
Kind Code:
A1
Abstract:
Provided is a water treatment that enables operation whereby heat and water loss due to blowdown are decreased considerably compared with a soft water feed, but without the use of strong alkali or strong acid and without the use of a large amount of sodium chloride, and the water treatment is carried out so that a thermal conduction surface clean is kept clean by preventing calcium and magnesium scaling of the thermal conduction surface and by preventing scaling by iron carried in by the steam condensate. In a steam generator facility that collects and reuses steam condensate as feed water, treated water obtained by passing raw water through a liquid pass-through type electric double-layer capacitor desalter (21) and water collected from the steam condensate are supplied to a steam generator as feed water without the use of a softening apparatus, and a water-soluble polymer having a carboxyl group within its molecule is added to the feed water.
Inventors:
SHIMURA YUKIMASA (JP)
YAMADA GAKU (JP)
YAMADA GAKU (JP)
Application Number:
PCT/JP2012/072329
Publication Date:
March 21, 2013
Filing Date:
September 03, 2012
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
SHIMURA YUKIMASA (JP)
YAMADA GAKU (JP)
SHIMURA YUKIMASA (JP)
YAMADA GAKU (JP)
International Classes:
C02F1/46; C02F1/42; C02F5/00; C02F5/10; F22D11/00
Foreign References:
| JP2008221143A | 2008-09-25 | |||
| JP2002273439A | 2002-09-24 | |||
| JP2011147893A | 2011-08-04 | |||
| JP2000154996A | 2000-06-06 | |||
| JP2008209126A | 2008-09-11 | |||
| JP2008006369A | 2008-01-17 | |||
| JP2002210468A | 2002-07-30 | |||
| JP2003039070A | 2003-02-12 | |||
| JP2001087767A | 2001-04-03 | |||
| JP2010230183A | 2010-10-14 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi (JP)
Takeshi Shigeno (JP)
Takeshi Shigeno (JP)
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Claims: