【摘要】 为了探明不同填料潜流生物滤池对尾水氮磷协同去除效果，在野外构建了中试潜流生物滤池，并设置C1(稻草+改性膨润土)、C2(锯木屑+改性膨润土)和C3(稻草/锯木屑+改性膨润土)3个处理，动态监测不同潜流生物滤池出水水质变化。结果表明，C1、C2、C3出水平均pH分别为7.19、11.77、9.93,出水化学需氧量分别为15.34、14.96、12.95 mg/L,均达到《地表水环境质量标准》(GB 3838—2002)中的Ⅲ类标准；总氮平均去除率为C1(56.13%)>C3(53.71%)>C2(20.64%),其中C2、C3运行过程中出现了明显的亚硝态氮累积；总磷平均去除率为C2(90.69%)>C3(61.98%)>C1(26.86%),其中C2出水总磷优于《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准，可达GB 3838—2002中的Ⅳ类标准。可见，固体碳源种类会影响潜流生物滤池脱氮除磷效率，潜流生物滤池构建时应根据实际情况选择合适的固体碳源。更多还原

【Abstract】 In order to explore the co-removal effect of different subsurface flow biological fillers on nitrogen and phosphorus from tail water, a pilot-scale subsurface flow biological filter was constructed, and three treatments were set: C1(rice straw+modified bentonite),C2(sawdust+modified bentonite) and C3(rice straw/sawdust+modified bentonite). The effluent water quality of different subsurface flow biological filter were monitored dynamically. The results showed that the effluent average pH of C1,C2 and C3 was 7.19,11.77 and 9.93 respectively, and effluent chemical oxygen demand was 15.34,14.96 and 12.95 mg/L,which could meet the class Ⅲ of “Environmental quality standards for surface water”(GB 3838-2002). The average total nitrogen removal rate was C1(56.13%)>C3(53.71%)>C2(20.64%). An obvious nitrite nitrogen accumulations were occurred in C2 and C3 treatments. The average removal rate of total phosphorous was C2(90.69%)>C3(61.98%)>C1(26.86%). Furthermore, the effluent total phosphorous in C2 treatment was better than the first class A standard of “Discharge standard of pollutants for municipal wastewater treatment plant”(GB 18918-2002),and reached the class Ⅳ of GB 3838-2002. The above studies indicated that the types of solid carbon sources affect the nitrogen and phosphorus removal efficiency of the subsurface flow biological filter, and the appropriate solid carbon sources should be selected according to the actual situation when constructing the subsurface flow biological filter.更多还原