Real-ization of a closed-loop water supply system of an industrial enterprise — as a basis for resource saving

In this article the authors investigate the actual problem of creating a closed system of water use through the development of local treatment facilities for industrial wastewater. The food industry enterprise is considered as an example for the realization of such a technological solution. The results of research aimed at studying and analyzing the chemical composition of contaminants of production water generated at the selected facility are presented. The technology of local wastewater treatment including mechanical and physical-chemical stages is developed and substantiated, both theoretically and experimentally. The main results of laboratory studies devoted to the determination of technolog-ical parameters of stage-by-stage treatment of industrial wastewater are described. A complex techno-logical scheme of wastewater treatment from multicomponent contaminants with the possibility of realizing a closed-loop water supply system is proposed. Implementation of the proposed system of cyclic water supply at a food enterprise allows not only to reduce financial costs for water supply, but also to increase the environmental sustainability of production. The research presented in the article makes a significant contribution to the development of environmentally effective technologies for the treatment of industrial effluents and can be adapted for application at enterprises of various industries seeking to sustainable use of water resources and reduce the negative impact on the environment