住宅小区污水处理与回用技术

TREATMENT AND REUSE OF DOMESTIC SEWAGE IN URBAN COMMUNITIES

地沟式生态工程技术利用填料的毛管浸润、吸附、沉淀、过滤作用,微生物降解作用和植物摄取作用净化污水。该技术对生活污水处理效率高,BOD5、COD、SS、NH3-N、TP去除率分别为95.0%、90.22%、96.70%、90.42%、96.84%,出水不仅能满足《污水综合排放标准》(GB8978-96)的一级标准,而且满足《城市污水再生利用-景观环境用水水质标准》(GB/T18921-2002),处理后的污水可以回用。该技术投资省、运行费用低、施工管理方便、景观效果好,适用于城镇住宅小区污水处理与回用。

The undergroud-ditch-pattem sewage ecological treatment technology was used to soil capillary infiltration, adsorption, filtration, microorganism degradation and organism assimilation for purifying polluted water. The removal rates of BOD6,COD, SS,NH3-N,TP reached to 95.0%, 90.22%,96.70%,90.42%,96.84% respectively; the effluent concentration could comply with not only the first class standard of ＂comprehensive discharge standard of sewage＂ （GB8978-96）, but also the requirements of ＂water quality standard for urban sewage reuse, and landscape and environment use＂（GB/T18921-2002）. Thanks to its low cost, easy operation and management, good landscape, the technique is suitable for medium or small-sized cities and towns.