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Title:
APPARATUS FOR MAKING PURE WATER
Document Type and Number:
Japanese Patent JP2500968
Kind Code:
B2
Abstract:

PURPOSE: To easily and efficiently prepare high purity water at a low cost.
CONSTITUTION: An ultraviolet irradiation device 1 irradiating water to be treated with ultraviolet rays to oxidize org. matter to an org. acid, an anion exchange device 2 treating the treated water containing the org. acid from the ultraviolet irradiation device 1 and a mixed bed type ion exchange device 3 removing the residual ionic substance from the anion exchange device 2 are mounted. High purity water extremely low in TOC concn. can be prepared within a short time. The excessive consumption of power due to the excessive oxidation of org. matter is avoided and the quantity of electricity required in ultraviolet oxidation can be reduced. The regeneration frequency of the mixed bed type ion exchange device can be also reduced to a large extent. Process control becomes easy and the running cost of the apparatus can be reduced to a large extent and the apparatus can also be miniaturized.


Inventors:
IMAIZUMI MASABUMI
SATO SHIGEAKI
OBATA KASHU
Application Number:
JP30462291A
Publication Date:
May 29, 1996
Filing Date:
November 20, 1991
Export Citation:
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Assignee:
KURITA WATER IND LTD
International Classes:
C02F1/32; C02F1/42; C02F1/72; C02F9/00; (IPC1-7): C02F1/32; C02F1/42
Domestic Patent References:
JPS61101292A
JPS5628191A
JPH0142754A
JPS5419227A
Attorney, Agent or Firm:
Tsuyoshi Shigeno



 
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