High-purity water producing apparatus utilizing boron-selective

Details High-purity water producing apparatus utilizing boron-selective High-purity water producing apparatus utilizing boron-selective

1997-01-17

1998-11-10

Cintins, Ivars

Liquid purification or separation

With means to add treating material

Plural distinct separators

210259, 210266, 210284, 210900, C02F 900

Patent

active

058338462

ABSTRACT:
A high-purity water producing apparatus has an excellent effect of environmental protection and is also capable of effectively removing boron. It comprises a pretreatment unit, and a double pass RO unit an EDI unit or a distillation unit or any combination thereof as principal deionization unit(s) but does not comprise any chemical-regeneration type ion exchanger. It further comprises a boron removing unit and the water treated by the principal deionization unit(s) is brought into contact with a boron-selective ion exchange resin.

REFERENCES:
patent: 3870033 (1975-03-01), Faylor et al.
patent: 3887460 (1975-06-01), Ward et al.
patent: 4548716 (1985-10-01), Boeve
patent: 4808287 (1989-02-01), Hark
patent: 5518624 (1996-05-01), Filson et al.
Characterization of a Boron-Specific Ion Exchange Resin (Amberlite IRA-743) Robert Kunin and Albert F. Preuss vol. 3 No. 4 pp. 304-306.
Amberlite IRA-743 Ion Exchange Resin Rohm and Haas Company 1989.

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