生物膜填料安装方式对环流式活性污泥-生物膜工艺运行性能的影响
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摘要
在分析生物膜系统对环流反应器潜在影响的基础上,采用对比试验方法研究了固定式生物填料和悬浮式生物填料对环流式活性污泥-生物膜组合工艺(CASBS)反应器流速、DO含量分布及除磷脱氮性能的影响。结果表明,固定式填料系统的水流阻力大于悬浮式填料系统,但是固定式填料系统在挂膜性能和DO分布上优于悬浮式填料。从处理能力上来看,固定式填料系统具有更好的除磷脱氮效果。当进水COD和氨氮、TN、TP的质量浓度分别为127～756mg/L和14.05～58.22、27.60～65.25、1.26～6.44 mg/L时,固定式填料的CASBS反应器出水能够达到GB 18918-2002一级A要求,平均去除率分别为94.2%和95.4%、79.4%、93.2%。
Based on analyzing the potential influence of the biofilm system on the loop reactor,the influence of fixed packing and suspended packing on flow rate,DO distribution and nitrogen and phosphorus removal in CASBS had been studied by comparative methods.The results showed that the flow resistance in fixed packing system was greater than which in the suspended packing system,but the film formation property and DO distribution in fixed packing system was better than which in the suspended packing system.The removal of nitrogen and phosphorus were better in fixed packing system.When the concentrations of COD and NH3-N,TN,TP in influent were 127～756 mg/L and 14.05～58.22,27.60～65.25,1.26～6.44 mg/L,respectively,the average removal efficiencies of COD and NH3-N,TN,TP were 94.2% and 95.4%,79.4%,93.2% respectively,which met the first level A criteria specified in the GB 18918-2002.
Based on analyzing the potential influence of the biofilm system on the loop reactor,the influence of fixed packing and suspended packing on flow rate,DO distribution and nitrogen and phosphorus removal in CASBS had been studied by comparative methods.The results showed that the flow resistance in fixed packing system was greater than which in the suspended packing system,but the film formation property and DO distribution in fixed packing system was better than which in the suspended packing system.The removal of nitrogen and phosphorus were better in fixed packing system.When the concentrations of COD and NH3-N,TN,TP in influent were 127～756 mg/L and 14.05～58.22,27.60～65.25,1.26～6.44 mg/L,respectively,the average removal efficiencies of COD and NH3-N,TN,TP were 94.2% and 95.4%,79.4%,93.2% respectively,which met the first level A criteria specified in the GB 18918-2002.
引文
[1]吉芳英,赵易,陈雨喆,等.活性污泥-生物膜组合循环流脱氮除磷
一体化污水处理装置与方法:中国,101891344A[P].2010-11-24.
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一体化污水处理装置与方法:中国,101891344A[P].2010-11-24.
[2]吉芳英,赵易,熊黎.环流式活性污泥-生物膜组合工艺除磷脱氮性能研究[J].中国给水排水,2011,23(15):25-28.
[3]J Patel,G Nakhla.Simultaneous nitrification and denitrification with anoxic phosphorus uptake in a membrane bioreactor system[J].Water Environ Res.,2006,78(11):2193-2202.
[4]赵易.环流式活性污泥-生物膜组合工艺处理小城镇生活污水的试验研究[D].重庆:重庆大学,2004.
[5]王丹丹.反应沉淀一体式矩形环流生物反应器脱氮除磷研究[D].黑龙江:哈尔滨工业大学,2009.
[6]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002.
[7]杨殿海,王峰,夏四清.废水处理工艺中同步硝化/反硝化研究进展[J].上海环境科学,2003,22(12):878-882.
[8]Let t ing G.Advanced anaerobic wastewater treatment in near future[J].Water Sci Tech.,1997,35(10):5-12.
[9]GB18918-2002城镇污水处理厂污染物排放标准[S].
[10]吕锡武.同时硝化和反硝化的理论和实践[J].环境化学,2002,21(6):564-570.