自回流生物转盘/植物滤床工艺处理农村生活污水  

Combined Process of Self-circulating Rotating Biological Disk and Aquatic Plant Filter Bed for Rural Domestic Wastewater Treatment

作　　者：李彬[1] 吕锡武[1] 宁平[2] 朱光灿[1] 张承芳[1] 

机构地区：[1]东南大学环境工程系,江苏南京210096 [2]昆明理工大学环境科学与工程学院,云南昆明650093

出　　处：《中国给水排水》2007年第17期15-18,共4页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2002AA601011);江苏省环保厅"农村环境综合整治技术开发与示范"项目(2005012)

摘　　要：针对农村生活污水排放量小、有机物浓度相对偏低、日变化系数大、间歇排放且不易收集的特点,提出了自回流生物转盘与水生植物滤床组合工艺,并开展了处理太湖流域农村生活污水的研究。结果表明,该组合工艺稳定运行时对总氮、总磷、有机物的去除效果较好,平均去除率分别达到了50.8%、60%和57.9%。生物转盘对氮的去除归因于与脱氮池的组合,生物转盘出水回流至脱氮池后,使硝化、反硝化得以进行完全;水生植物滤床主要通过生物和化学的协同作用去除污染物。该组合工艺的运行成本为0.15元/m3,为农村生活污水的处理提供了一条新的途径。Rural domestic wastewater has characteristics of small discharge quantity, relatively low organic concentration, large daily variation coefficient, discontinuous discharge and difficult collection. Therefore, the combined process of self-circulating rotating biological disk （RBD） and aquatic plant filter bed （APFB） was designed to purify rural domestic wastewater in Taihu Lake Basin. The results show that under stable operation conditions, the removal efficiencies of TN, TP and COD are 50.8%, 60% and 57.9% respectively. Nitrogen removal by RBD is attributed to combination with denitrification pond, in which nitrification and denitrification are completed with effluent from RBD. For pollutant removal by the APFB, a synergistic biological and chemical process is required. In addition, the operation cost is as low as 0.15 yuan/m^3 , providing a new way for rural domestic wastewater treatment

关 键 词：农村生活污水 生物转盘 水生植物滤床 脱氮除磷 

分 类 号：X703[环境科学与工程—环境工程]