Introduction of innovative water treatment technologies-the key to sustainable development of the modern city

Abstract

The mechanism of conductivity of natural ion exchangers and resin KU-2 in ammonium and chlorine ions. On the basis of experimental data obtained dependence for pure solution and ionit-solution systems allowed to set the concentration of isoconductive solution (in which the concentration of electrical conductivity of the solution is the same as in the ionic). The method of measuring of resistance of a layer of grains of granulated ionite after removal of equilibrium solution by centrifugation is suggested. On the basis of experimental studies the types membrane backfill and determined the optimal modes of implementation of electrodialysis in the cell with membranous backfilling. The conducted researches give the possibility to implement the principle model approach to describe the conductive properties of ion-exchange materials and its experimental verification. The mathematical model of the conductivity of ion-exchange resins and columns, which combines the theoretical approaches of three wired and microheterogeneous model. To check the adequacy of the developed model was investigated the electrical conductivity of synthetic and natural ion exchangers materials, as well as columns of these materials in solutions of different salts. This has allowed us to develop a model to describe the electrical conductivity of ion-exchange materials and to measure the proportion of current which flows through the gel, solution and a mixed channel conductivity in an ion-exchange system containing two-chargers ions. The algorithm of calculation of physical-chemical parameters of water purification process by electrodialysis with ionite membranes with use of ionization in the form of granules, as a intermembrane backfilling. The use of the obtained results will predict parameters of process of ion-exchange purification of model solutions of wastewater and multicomponent industrial solutions.