Method of and apparatus for controlling pH and electrical conduc

Details Method of and apparatus for controlling pH and electrical conduc Method of and apparatus for controlling pH and electrical conduc

1988-12-20

1990-04-17

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210686, 210790, 210 961, 210194, 210284, 210290, C02F 142

Patent

active

049178067

ABSTRACT:
Water is allowed to flow in parallel into a mixed bed in which an anion exchange resin and a cation exchange resin are disposed in a mixed state and into a single bed in which an anion exchange resin or a cation exchange resin is disposed. As the proportion of the flow rates of water introduced into the two beds is adjusted, the pH and electrical conductivity of water is controlled. Control is effected in such a manner that the pH and electrical conductivity of water are maintained at appropriate levels without using any chemicals.

REFERENCES:
patent: 2287284 (1942-06-01), Behrman
patent: 2938868 (1960-05-01), Carlson et al.
patent: 3985648 (1976-10-01), Casolo
patent: 4622133 (1986-11-01), Furuno
"pH Control by Ion Exchange in High-pH Systems", Demmitt, Chemical Abstracts, vol. 57, No. 7, 1962.
"Boshoku Gijutsu Binran", Association of Corrosion Prevention, 1986, pp. 643-644.

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