一种无动力·蒸发式农村生活污水处理新技术及其工程应用

为了加强我国寒冷干旱地区农村污水治理,介绍了一种无动力·蒸发式污水处理新技术,由前处理装置、二次过滤装置、特殊土壤处理蒸发装置组成,整个系统采用地埋式,埋藏深度为冻土层以下。通过无动力·蒸发式污水处理系统处理内蒙古地区的集中式与分散式农村生活污水,处理后污水可以达到《城镇污水处理厂污染物排放标准》（GB 18918-2002）一级A标准,氨氮、总磷、BOD₅、COD_Cr、悬浮物的去除率均超过90%。系统终端蒸发装置可将净化后水体全部蒸发,系统运行无需专人维护,节能减排。该技术在内蒙古地区已有多处工程应用,且具有良好的应用效果,适用于北方低温干旱地区,有很强的地域实用性。

A novel technology and its engineering application for rural domestic sewage treatment

Improvement in the living standards of rural people is generally accompanied by an increase in the annual volume of sewage discharge. Consequently, the treatment of sewage and operation of rural domestic sewage treatment systems become difficult, specifically in arid and cold regions. To address this problem, this research introduced a novel sewage treatment technology-The unpowered and evaporative sewage treatment system. The unpowered and evaporative sewage treatment system comprised a pre-treatment device, secondary precision filtration device, special soil treatment device, and evaporation device. The entire system was installed underground below the frozen soil layer. This system could treat sewage to the "first-class" standard listed in the Discharge Standards of Pollutans for Municipal Wastewater Treatment Plant (GB 18918-2002). In addition, a removal rate of above 90% of ammonia nitrogen, total phosphorus, biochemical oxygen demand (BOD₅), chemical oxygen demand (COD_Cr), and suspended solids could be achieved. Furthermore, the treated wastewater could be completely evaporated by the terminal evaporation device. The operation of this system was simple, and the system did not require special maintenance; Moreover, the system consumed very less energy, resulting in emission reduction. This system was now being employed for sewage treatment in rural, arid, and cold regions of China. Furthermore, this technology has been successfully employed in many projects in Inner Mongolia and has been proven to be very effective.