Patent ID: 8861670

Claim:
A condensate demineralization method, comprising: performing a demineralization treatment of a condensate from a nuclear power plant using an ion exchange resin, wherein the demineralization treatment of the condensate is performed by bringing the condensate into contact with an ion exchange resin bed, wherein the ion exchange resin bed comprises a mixed bed containing a strongly acidic gel-type cation exchange resin and a strongly basic type 1 porous anion exchange resin; a cross-linking degree of the strongly basic type 1 porous anion exchange resin is within a range from 1% to 3%; and the cation exchange resin and the anion exchange resin are mixed uniformly in the mixed bed, and removing organic impurities (TOC) composed mainly of polystyrenesulfonic acid eluted from the strongly acidic gel-type cation exchange resin.