厌氧悬浮填料床预处理农村生活污水的试验研究

Research on Pretreatment of Rural Sewage with Anaerobic Suspending Media Beds

农村生活污水的处理应具有投资省、运行费用低、操作管理简便等特点。采用厌氧悬浮填料床预处理农村生活污水,结果表明:当进水平均CODCr、SS、氨氮和TP浓度分别为137.4、687、65.6和5.2 mg/L时,水力停留时间(HRT)为3 h,厌氧悬浮填料床反应器出水浓度分别为106.1、76.0、62.6和5.0 mg/L,通过预处理可降低后续处理设施的污染负荷,防止悬浮物对后续处理设施的堵塞,可见厌氧悬浮填料床对农村生活污水有较好的预处理作用。

Rural sewage treatment process is characterized by less investment,low operating costs,and simple management.According to such a principle,this paper studies the performance of rural sewage pretreatment with anaerobic suspending media beds.The results show that when the influent chemical oxygen demand（CODCr）,suspension（SS）,ammonia and total phosphorus（TP） are 137.4,687,65.6 and 5.2 mg/L respectively and hydraulic retention time（HRT） is 3 hours,the effluent quality is 106.1,76.0,62.6 and 5.0 mg/L respectively.The pretreatment of anaerobic suspending media beds can reduce the contamination load and avoid barrage of latter treatment establishment.The anaerobic suspending media bed has a better pretreatment effect on rural sewage.