The results of laboratory research of processes of add-on purification of domestic and household wastewaters on units with fiber-expanded polystyrene medium of their repeated use in closed water supply system at enterprises of agroindustrial complex are given. The technological schemes of closed water-use systems of such enterprises are offered with the use of surface and ground water, whose use will enable to save material, water and energy resources while minimizing the collection of fresh water from natural water sources and protecting the environment from pollution with sewage.

中文翻译：

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农工企业封闭式供水系统中的水净化

给出了对在工业联合企业的密闭供水系统中重复使用的纤维膨化聚苯乙烯介质装置上的生活污水和家庭废水进行附加净化处理的实验室研究结果。此类企业的封闭式用水系统的技术方案提供了地表水和地下水，其使用将节省材料，水和能源，同时最大程度地减少从天然水源收集的淡水并保护环境免受污水污染。