Evaluation of the Characteristics of Domestic Reverse-osmosis Modules for Organization of Circulating Water Supply for Small-tonnage Production

Abstract

The possibilities of using domestic reverse-osmosis modules for the organization of circulating water supply and return to the cycle of the target product at low-tonnage chemical plants, as well as the application of these modules in self-contained dwellings, are considered. The selectivity of membranes was compared with the separation of aqueous solutions of multicomponent mixtures containing polar and nonpolar substances. The character of the dependences of the selectivity of membranes on the concentration of dissolved substances in the initial solution during the separation of multicomponent mixtures was studied. The possibility of achieving a clean water recovery ratio (the degree of closure of the circuit) is shown to be 96.5%. Schematic diagrams of circulating water supply systems intended for extraction of components lost with wastewater at small-scale industrial enterprises and for sewage treatment of sanitary-hygienic waters with the purpose of their further return to the production cycle, utilization or neutralization are proposed.