USE OF ELECTRODIALYSIS FOR CONCENTRATING SIMULATED (MODEL) DRAINAGE COLLECTOR WATERS.

The purpose of this work is to examine the possibility of obtaining highly concentrated brines during desalination of simulated DCW without preliminary softening with the use of MK-100M cation-exchange membrane obtained by chemical modification of homogeneous MK-100 cation-exchange membrane with ethylenediamine. It is shown that by using modified homogeneous cation-exchange membranes of the MK-100M type and circulating the brine with the use of calcium sulfate seed crystals it is possible to desalinate unsoftened hard water, obtaining a concentrated brine.