EDI, also known as continuous electric demineralization technology, scientifically integrates electrodialysis technology and ion exchange technology, and realizes the directional migration of ions in water under the action of electric field through the selective transmission of cation and anion membranes to cation and anion and the exchange of ion exchange resin to ion in water, so as to achieve the deep purification and demineralization of water, And continuously regenerating the loading resin by hydrogen ion and hydroxide ion generated by water electrolysis; EDI device belongs to the fine treatment water system, which is generally used in conjunction with RO reverse osmosis to form the ultrapure water treatment system of pretreatment, reverse osmosis and EDI device, replacing the mixed ion exchange equipment of traditional water treatment process.

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