Title:
METHOD AND APPARATUS FOR MANUFACTURING PURE WATER
Document Type and Number:
WIPO Patent Application WO/2015/068635
Kind Code:
A1
Abstract:
Provided a method and apparatus for manufacturing pure water by causing ultraviolet-oxidized water from an ultraviolet oxidation device to come into contact with a platinum-metal-supporting catalyst resin, wherein degradation of the catalyst resin is prevented and hydrogen peroxide can be subjected to a decomposition treatment stably over a long period of time. A method and apparatus for manufacturing pure water by performing ultraviolet oxidation on to-be-treated water using the ultraviolet oxidation device (2), and then removing the hydrogen peroxide using a hydrogen peroxide removal device (4) in which a platinum catalyst is used, wherein the TOC in the water supplied to the ultraviolet oxidation device (2) is at a level of 5 ppb or less, and an anion exchange resin column (3) is installed in a stage following the ultraviolet oxidation device (2).
Inventors:
FUKUI TAKEO (JP)
MIYAZAKI YOICHI (JP)
MIYAZAKI YOICHI (JP)
Application Number:
PCT/JP2014/078912
Publication Date:
May 14, 2015
Filing Date:
October 30, 2014
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F1/32; B01J31/28; C02F1/42; C02F1/58; C02F1/72; C02F9/00
Foreign References:
| JP2007185587A | 2007-07-26 | |||
| JPH05138162A | 1993-06-01 | |||
| JP2007125519A | 2007-05-24 | |||
| JP2002159979A | 2002-06-04 | |||
| JP2002345400A | 2002-12-03 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi (JP)
Takeshi Shigeno (JP)
Takeshi Shigeno (JP)
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