Equipment and process for producing high-purity water

Details Equipment and process for producing high-purity water Equipment and process for producing high-purity water

1995-10-27

1998-02-24

Phasge, Arun S.

Electrolysis: processes, compositions used therein, and methods

Electrolytic material treatment

Organic

205742, 205746, 205748, 204275, 204263, 204264, C02F 1461

Patent

active

057208697

ABSTRACT:
A high-purity water producing equipment comprises a primary purification treatment system, a primary deionized water tank, a secondary purification treatment system for producing high-purity water from a primary deionized water, a circulatory system pipe for returning the produced high-purity water to a primary deionized water tank and a branch water feed system branched off from the circulatory system for feeding the high-purity water to a use point. An electrolytic unit for producing the anolyte EIW (electrolytic ionized water) to be catholyte EIW from the electrolysis of the high-purity water is provided as a bypass midway along the circulatory system. The anolyte EIW is added to the circulatory pipe downstream of the branching point toward the use point, when cleaning of units is necessary.

REFERENCES:
patent: 4828660 (1989-05-01), Clark et al.
patent: 5510009 (1996-04-01), Arai et al.
patent: 5543030 (1996-08-01), Shiramizu et al.
patent: 5578193 (1996-11-01), Aoki et al.

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