Title:
PURE WATER PRODUCING APPARATUS AND PURE WATER PRODUCING METHOD
Document Type and Number:
Japanese Patent JP2019118891
Kind Code:
A
Abstract:
To provide a pure water producing apparatus and a pure water producing method capable of reducing the TOC load on a strongly basic anion exchange resin by efficiently utilizing a weakly basic anion exchange resin which is easy to regenerate.SOLUTION: A pure water producing apparatus for producing pure water from raw water (but excluding electronic part production process drainage), comprises a weakly basic anion exchange resin layer, a strongly basic anion exchange resin layer, a strongly acidic cation exchange resin layer and water-flowing means for water-flowing in the above-mentioned order in the ion exchange resin layers. A pure water producing apparatus for producing pure water from raw water (but excluding electronic part production process drainage), comprises a weakly basic anion exchange resin layer, a strongly basic cation exchange resin layer, a strongly acidic anion exchange resin layer and water-flowing means for water-flowing in the above-mentioned order in the ion exchange resin layers.SELECTED DRAWING: Figure 1
Inventors:
MINATO YASUHARU
Application Number:
JP2018001301A
Publication Date:
July 22, 2019
Filing Date:
January 09, 2018
Export Citation:
Assignee:
KURITA WATER IND LTD
International Classes:
C02F1/42; B01J39/05; B01J39/18; B01J41/05; B01J41/07; B01J41/12; B01J47/026; B01J49/06; B01J49/07; B01J49/08; B01J49/09
Domestic Patent References:
| JPH10180252A | 1998-07-07 | |||
| JP2014100706A | 2014-06-05 | |||
| JPS62191096A | 1987-08-21 | |||
| JPS53128149A | 1978-11-08 | |||
| JPS5275053A | 1977-06-23 | |||
| JP2000061321A | 2000-02-29 |
Attorney, Agent or Firm:
Tsuyoshi Shigeno
Takayuki Shigeno
Takayuki Shigeno