DESCRIPTION OF MATHEMATICAL MODEL OF WATER DEMINERALIZATION PROCESS WITH APPLICATION OF MEMBRANE TECHNOLOGIES AND THE CONCENTRATE DISPOSAL UNIT
To select the best options for technological schemes of the water treatment plants of TPPs, NPPs and CCGTs, their research and optimization according to the criteria for the quality of treated water, the basic mathematical models of purification steps and a waste disposal unit have been developed. The article presents mathematical models of an ultrafiltration unit, calculation of pH by mineralization components, calculation of the chemical composition of the filtrate and concentrate of the reverse osmosis unit and a filter loaded with weak acid cation exchange resin. The proposed mathematical models correspond to the described technological processes and can be used as the basis for engineering calculations. Verification of the obtained models carried out under industrial conditions showed that the area of their adequacy is within 86.5%.