DEMINERALIZATION OF AQUEOUS SOLUTION IN CELL INCLUDING IONIC EXCHANGE MEMBRANES USING ELECTRICAL POTENTIAL

摘要

ABSTRACT OF THE DISCLOSUREProcess and apparatus are provided for demineralizingaqueous solutions without using regenerating chemicals.Oppositely charged ions are electrolytically generated withinelectrode chambers and diffused into the stream of aqueoussolution to be demineralized flowing in cross-current thereto.In their migration in response to the application of anelectric potential, the ion streams are subjected todisplacement steps in cation and anion exchange massesseparated by selectively permeable ion exchange membranes. Theaqueous solution alternately passes through the cation andanion exchange masses resulting in a demineralized aqueousstream and an enriched brine stream.