FIELD: technological processes.
SUBSTANCE: invention relates to a membrane technique, in particular to a technology for producing modified heterogeneous ion-exchange membranes, and can find application in electrodialysis apparatus for concentration and separation of solutions under high-intensity current modes of electrodialysis. Method for modifying the sulfocathion exchange membrane for high-intensity electrodialysis, comprising heat treatment, is characterized in that the heat treatment is carried out in water at temperatures of from 60 to 80 °C for at least 30 hours.
EFFECT: technical result consists in increasing the ability to develop the electroconvection of ion-exchange membranes for efficient and stable functioning in electrodialysis apparatus at currents significantly exceeding the value of the limiting diffusion current.
1 cl, 9 dwg
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