改良型倒置A~2/O生物膜工艺的脱氮除磷性能研究
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摘要
通过在倒置A2/O工艺中增设填料,并对其污泥及硝化液回流方式进行变化后,得到兼具脱氮除磷功能与生物膜特点的改良型倒置A2/O生物膜工艺,并以实际生活污水为处理对象考察了工艺的脱氮除磷性能。结果表明,系统采用硝化液回流与污泥回流分离的方式,并增设组合填料与火山岩后,有助于提升系统的脱氮除磷性能,增强系统的稳定性。当DO质量浓度维持在2.0 mg/L和硝化液体积回流比为200%的条件下,系统对COD、NH4+-N、TN及TP的去除率分别可达84.9%、92.8%、70.9%和75.3%。DO质量浓度及硝化液回流比对系统的脱氮除磷性能有较大影响。
A novel reverse A2/O membrane process was obtained by adding some filters and improving the circulation way of sludge and internal recycle.The improved A2/O process had the function of nitrogen/phosphorus removal and properties of bio-membrane technology. Actual sewage was treated in order to investigate the performance of the removal of nitrogen and phosphorus with the improved A2/O process. The results showed that it contributed to the promotion of the removal efficiencies of nitrogen and phosphorus and the stabilization of the system when the circulation ways of sludge and internal recycle were improved and some filters were added in the system. The removal efficiencies of COD, NH4+-N, TN and TP were 84.9%, 92.8%,70.9% and 75.3%, respectively, in the conditions of the concentration of DO being 2.0 mg/L and the ratio of internal recycle being 200%. The removal of nitrogen and phosphorus was significantly affected by the concentration of DO and the ratio of internal recycle.
A novel reverse A2/O membrane process was obtained by adding some filters and improving the circulation way of sludge and internal recycle.The improved A2/O process had the function of nitrogen/phosphorus removal and properties of bio-membrane technology. Actual sewage was treated in order to investigate the performance of the removal of nitrogen and phosphorus with the improved A2/O process. The results showed that it contributed to the promotion of the removal efficiencies of nitrogen and phosphorus and the stabilization of the system when the circulation ways of sludge and internal recycle were improved and some filters were added in the system. The removal efficiencies of COD, NH4+-N, TN and TP were 84.9%, 92.8%,70.9% and 75.3%, respectively, in the conditions of the concentration of DO being 2.0 mg/L and the ratio of internal recycle being 200%. The removal of nitrogen and phosphorus was significantly affected by the concentration of DO and the ratio of internal recycle.
引文
[1]杨敏,孙永利,郑兴灿,等.清潭污水处理厂一级A提标改造工程脱氮除磷特性分析[J].给水排水,2014,40(2):37-40.
[2]刘圣根,戴海平,柯永文.倒置A2O-MBR工艺处理城市生活污水脱氮除磷中试研究[J].膜科学与技术,2014,34(1):91-95.
[3]毕学军,张波.倒置A2/O工艺生物脱氮除磷原理及其生产应用[J].环境工程,2006,24(3):29-30.
[4]Lim E T,Jeong G T,Bhang S H,et al.Evaluation of pilot-scale modified A2O processes for the removal of nitrogen compounds from sewage[J].Bioresource Technology,2009,100(24):6149-6154.
[5]李琪吉,芳英,金展,等.容积负荷对同步脱氮除磷工艺处理效果的影响[J].中国给水排水,2014,30(7):1-4.
[6]张华,张学洪,郭周芳,等.微孔曝气氧化沟生物脱氮除磷影响因素的研究[J].水处理技术,2014,40(4):103-106.
[7]Guadie A,Xia S Q,Zhang Z Q,et al.Simultaneous removal of phosphorus and nitrogen from sewage using a novel combo system of fluidized bed reactor-membrane bioreactor(FBR-MBR)[J].Bioresource Technology,2013,149:276-285.
[8]杨鹏,张朝升,荣宏伟,等.双污泥BCR反硝化同步脱氮除磷的试验研究[J].环境科学与技术,2014,37(3):74-77.
[9]邹高龙,张健君,杨淑芳,等.传统活性污泥法新增脱氮除磷功能的成功改造实例[J].中国给水排水,2014,30(6):81-84.
[10]Ju X,Wu S,Zhang Y,et al.Intensified nitrogen and phosphorus removal in a novel electrolysis-integrated tidal flow constructed wetland system[J].Water Research,2014,59(3):37-45.
[11]张志,康壮武,陈松明.倒置A2/O脱氮除磷工艺对传统活性污泥法污水厂的改造[J].水处理技术,2006,32(11):83-85.
[12]虞正平,孙林忠,史维忻,等.苏州福星污水厂生物池工艺控制系统设计及分析[J].中国给水排水,2012,(1):104-108.
[13]李思敏,杜国帅,唐锋兵.改良A2/O工艺对低碳源污水的脱氮除磷性能分析[J].中国给水排水,2013,29(12):25-29.
[14]Di Trapani D,Christensso M,Odegaard H.Hybrid activated sludge/biofilm process for the treatment of municipal wastewater in a cold climate region:a case study[J].Water Science&Technology,2011,63(6):1121-1129.
[15]Lai T M,Dang H V,Nguyen DD,et al.Wastewater treatment using a modified A2O process based on fiber polypropylene media[J].Journal of Environmental Science and Health,Part A,2011,46(10):1068-1074.
[16]Rogalla F,Johnson T,Mc Quarrie J.Fixed film phosphorus removal-flexible enough[J].Water Science&Technology,2006,53(12):75-81.
[17]Artiga P,Oyanedel V,Garrido J,et al.An innovative biofilm-suspended biomass hybrid membrane bioreactor for wastewater treatment[J].Desalination,2005,179(1):171-179.
[18]Lo I W,Lo K V,Mavinic D S,et al.Contributions of biofilm and suspended sludge to nitrogen transformation and nitrous oxide emission in hybrid sequencing batch system[J].Journal of Environmental Sciences,2010,22(7):953-960.
[19]Gonzalez B,Spinola A,Lamon A,et al.The use of microsensors to study the role of the loading rate and surface velocity on the growth and the composition of nitrifying biofilms[J].Water Science&Technology,2011,64(8):1607-1613.
[20]胡青,夏四清,陈清,等.两种回流方式倒置A2O-MBR工艺处理城市污水中试研究[J].水处理技术,2013,39(7):100-103.
[21]孔秀琴,王翥田,刘玉英,等.悬浮填料内循环脱氮除磷效能分析[J].重庆大学学报:自然科学版,2008,31(1):101-105.
[22]国家环保总局《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.
[23]陈永志,彭永臻,王建华,等.内循环对A2/O-曝气生物滤池工艺脱氮除磷特性影响[J].环境科学,2011,32(1):193-198.
[2]刘圣根,戴海平,柯永文.倒置A2O-MBR工艺处理城市生活污水脱氮除磷中试研究[J].膜科学与技术,2014,34(1):91-95.
[3]毕学军,张波.倒置A2/O工艺生物脱氮除磷原理及其生产应用[J].环境工程,2006,24(3):29-30.
[4]Lim E T,Jeong G T,Bhang S H,et al.Evaluation of pilot-scale modified A2O processes for the removal of nitrogen compounds from sewage[J].Bioresource Technology,2009,100(24):6149-6154.
[5]李琪吉,芳英,金展,等.容积负荷对同步脱氮除磷工艺处理效果的影响[J].中国给水排水,2014,30(7):1-4.
[6]张华,张学洪,郭周芳,等.微孔曝气氧化沟生物脱氮除磷影响因素的研究[J].水处理技术,2014,40(4):103-106.
[7]Guadie A,Xia S Q,Zhang Z Q,et al.Simultaneous removal of phosphorus and nitrogen from sewage using a novel combo system of fluidized bed reactor-membrane bioreactor(FBR-MBR)[J].Bioresource Technology,2013,149:276-285.
[8]杨鹏,张朝升,荣宏伟,等.双污泥BCR反硝化同步脱氮除磷的试验研究[J].环境科学与技术,2014,37(3):74-77.
[9]邹高龙,张健君,杨淑芳,等.传统活性污泥法新增脱氮除磷功能的成功改造实例[J].中国给水排水,2014,30(6):81-84.
[10]Ju X,Wu S,Zhang Y,et al.Intensified nitrogen and phosphorus removal in a novel electrolysis-integrated tidal flow constructed wetland system[J].Water Research,2014,59(3):37-45.
[11]张志,康壮武,陈松明.倒置A2/O脱氮除磷工艺对传统活性污泥法污水厂的改造[J].水处理技术,2006,32(11):83-85.
[12]虞正平,孙林忠,史维忻,等.苏州福星污水厂生物池工艺控制系统设计及分析[J].中国给水排水,2012,(1):104-108.
[13]李思敏,杜国帅,唐锋兵.改良A2/O工艺对低碳源污水的脱氮除磷性能分析[J].中国给水排水,2013,29(12):25-29.
[14]Di Trapani D,Christensso M,Odegaard H.Hybrid activated sludge/biofilm process for the treatment of municipal wastewater in a cold climate region:a case study[J].Water Science&Technology,2011,63(6):1121-1129.
[15]Lai T M,Dang H V,Nguyen DD,et al.Wastewater treatment using a modified A2O process based on fiber polypropylene media[J].Journal of Environmental Science and Health,Part A,2011,46(10):1068-1074.
[16]Rogalla F,Johnson T,Mc Quarrie J.Fixed film phosphorus removal-flexible enough[J].Water Science&Technology,2006,53(12):75-81.
[17]Artiga P,Oyanedel V,Garrido J,et al.An innovative biofilm-suspended biomass hybrid membrane bioreactor for wastewater treatment[J].Desalination,2005,179(1):171-179.
[18]Lo I W,Lo K V,Mavinic D S,et al.Contributions of biofilm and suspended sludge to nitrogen transformation and nitrous oxide emission in hybrid sequencing batch system[J].Journal of Environmental Sciences,2010,22(7):953-960.
[19]Gonzalez B,Spinola A,Lamon A,et al.The use of microsensors to study the role of the loading rate and surface velocity on the growth and the composition of nitrifying biofilms[J].Water Science&Technology,2011,64(8):1607-1613.
[20]胡青,夏四清,陈清,等.两种回流方式倒置A2O-MBR工艺处理城市污水中试研究[J].水处理技术,2013,39(7):100-103.
[21]孔秀琴,王翥田,刘玉英,等.悬浮填料内循环脱氮除磷效能分析[J].重庆大学学报:自然科学版,2008,31(1):101-105.
[22]国家环保总局《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.
[23]陈永志,彭永臻,王建华,等.内循环对A2/O-曝气生物滤池工艺脱氮除磷特性影响[J].环境科学,2011,32(1):193-198.