Patent ID: 6334941
Filing Date: 2002-01-01
Classification: B01D,B01J,C02F

Abstract:
An apparatus for producing deionized water, which comprises an ion exchanger in demineralizing compartments of an electrodialyzer having cation exchange membranes and anion exchange membranes alternately arranged between an anode and a cathode, wherein the ion exchanger is a composite ion exchanger comprising a first porous ion exchanger having a mixture of 60 to 95 wt % of cation exchange resin particles and 5 to 40 wt % of anion exchange resin particles bonded to each other and a second porous ion exchanger having a mixture of 60 to 95 wt % of anion exchange resin particles and 5 to 40 wt % of cation exchange resin particles bonded to each other; andwherein the first porous ion exchanger and the second porous ion exchanger provide a dot-shaped pattern.