Apparatus and method for producing ultrapure water and method of

Details Apparatus and method for producing ultrapure water and method of Apparatus and method for producing ultrapure water and method of

1992-06-11

1993-09-21

Sever, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210652, 210724, 2101952, 2102572, 21032165, B01D 6102, B01D 6108, B01D 6112

Patent

active

052465861

ABSTRACT:
An apparatus for producing ultrapure water includes a cation exchange resin tower, a decarbonation tower, an anion exchange resin tower, and a pH adjustor for changing the zeta potential of the impurities contained in water. The pH value is adjusted to aggregate or ionize the impurities. The apparatus can be controlled so that the treated water is introduced into a reverse osmosis unit or an oxidation tower and an after reverse osmosis unit according to the quality of the treated water.

REFERENCES:
patent: 3870033 (1975-03-01), Faylor et al.
patent: 4917806 (1990-04-01), Matsunaga et al.

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