FIELD: chemical industry. SUBSTANCE: water solutions, that have alkaline sulfates, are passed through great number of operating in series electrodialysis cells, that have acid and alkali chambers and are provided with cation-exchange membrane. Water solutions, that have alkali sulfates, are passed only through acid chamber of electrodialysis cell. Its electrodialysis cells inside have only cation-exchange membrane and are limited by bipolar ion-exchange membranes. EFFECT: apparatus provides better electrodialysis treatment of solutions with alkali sulfates, that are wastes of cellulose regeneration production after xanthate process. 3 cl, 3 dwg
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