容积负荷对ABR-MBR工艺反硝化除磷性能的影响
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摘要
采用连续流ABR-MBR组合工艺处理生活污水,研究不同容积负荷(volume loading rate,VLR)对该工艺反硝化除磷性能的影响,获得最佳工艺参数.试验考察ABR进水容积负荷(以COD计,下同)分别为0.76、1.01、1.51和2.27 kg·(m~3·d)~(-1)时系统去碳脱氮除磷的性能,并在各ABR容积负荷条件下考察MBR容积负荷对MBR反应器硝化性能的影响.结果表明,在ABR进水容积负荷为1.51 kg·(m~3·d)~(-1)的条件下,系统A2隔室COD去除量最大,并在MBR容积负荷为0.462 kg·(m~3·d)~(-1)时,MBR反应器中实现了短程硝化,系统NH_4~+-N和TN去除率分别达到90%和72%以上,厌氧释磷量为7.41 mg·L~(-1),缺氧吸磷量达到15.42 mg·L~(-1),出水PO_4~(3-)-P浓度低于0.5 mg·L~(-1),这表明短程硝化更有利于强化ABR-MBR系统的反硝化除磷性能.
The effect of volume loading rate(VLR) on denitrifying phosphorus removal was investigated in a continuous-flow ABRMBR combined process treating domestic wastewater to arrive at optimum process parameters.In the experiment,the VLR of the ABR was set at 0.76,1.01,1.51,and 2.27 kg·(m~3·d)~(-1).The removal of carbon,nitrogen,and phosphorus in the system and the effect of the VLR in the MBR on nitrification performance were observed for each VLR of the ABR.The results showed that under the condition when the VLR of the ABR was 1.51 kg·(m~3·d)~(-1),the amount of COD removal in the A2 chamber was the largest,and shortcut nitrification was achieved in the MBR when the VLR of the MBR was 1.51 kg·(m~3·d)~(-1).Meanwhile,the removal efficiency of NH_4~+-N and TN reached more than 90% and 72%,respectively,the anaerobic P-release and anoxic P-uptake were 7.41 mg·L~(-1) and 15.42 mg·L~(-1),respectively,and the concentration of PO_4~(3-)-P in effluent was lower than 0.5 mg·L~(-1),which indicated that the shortcut nitrification was more conducive to strengthening the performance of denitrifying phosphorus removal in the ABR-MBR system.
The effect of volume loading rate(VLR) on denitrifying phosphorus removal was investigated in a continuous-flow ABRMBR combined process treating domestic wastewater to arrive at optimum process parameters.In the experiment,the VLR of the ABR was set at 0.76,1.01,1.51,and 2.27 kg·(m~3·d)~(-1).The removal of carbon,nitrogen,and phosphorus in the system and the effect of the VLR in the MBR on nitrification performance were observed for each VLR of the ABR.The results showed that under the condition when the VLR of the ABR was 1.51 kg·(m~3·d)~(-1),the amount of COD removal in the A2 chamber was the largest,and shortcut nitrification was achieved in the MBR when the VLR of the MBR was 1.51 kg·(m~3·d)~(-1).Meanwhile,the removal efficiency of NH_4~+-N and TN reached more than 90% and 72%,respectively,the anaerobic P-release and anoxic P-uptake were 7.41 mg·L~(-1) and 15.42 mg·L~(-1),respectively,and the concentration of PO_4~(3-)-P in effluent was lower than 0.5 mg·L~(-1),which indicated that the shortcut nitrification was more conducive to strengthening the performance of denitrifying phosphorus removal in the ABR-MBR system.
引文
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[17]芦家娟,王毅力,侯立安,等.ABR成熟颗粒污泥的分形特征与尺度效应[J].环境科学,2005,26(4):118-123.Lu J J,Wang Y L,Hou L A,et al.Fractal characteristics and scale dependence of mature granular sludge in anaerobic baffled reactor(ABR)[J].Environmental Science,2005,26(4):118-123.
[18]姜潇,王毅力,张桐,等.厌氧折流板反应器(ABR)中成熟颗粒污泥的分形分析[J].环境科学学报,2008,28(4):647-658.Jiang X,Wang Y L,Zhang T,et al.Fractal analysis on mature granular sludge in an anaerobic baffled reactor(ABR)[J].Acta Scientiae Circumstantiae,2008,28(4):647-658.
[19]Castignetti D,Hollocher T C.Heterotrophic nitrification among denitrifiers[J].Applied and Environmental Microbiology,1984,47(4):620-623.
[20]Robertson L A,Kuenen J G.Aerobic denitrification—old wine in new bottles?[J].Antonie van Leeuwenhoek,1984,50(5-6):525-544.
[21]程继辉,吴鹏,程朝阳,等.基于优质碳源提供的CAMBR复合工艺短程硝化-反硝化除磷研究[J].环境科学,2015,36(12):4539-4545.Cheng J H,Wu P,Cheng C Y,et al.Shortcut nitrosationdenitrifying phosphorus removal based on high-quality carbon source in combined process of CAMBR[J].Environmental Science,2015,36(12):4539-4545.
[22]Zhang H M,Wang X L,Xiao J N,et al.Enhanced biological nutrient removal using MUCT-MBR system[J].Bioresource Technology,2009,100(3):1048-1054.
[2]沈耀良,吴鹏,王建芳,等.厌氧折流板反应器处理低浓度污水的研究与应用现状[J].苏州科技学院学报(工程技术版),2015,28(2):1-10.Shen Y L,Wu P,Wang J F,et al.State-of-the-art of anaerobic baffled reactor treating low-strength sewage[J].Journal of Suzhou University of Science and Technology(Engineering and Technology),2015,28(2):1-10.
[3]Brown P,Ong S K,Lee Y W.Influence of anoxic and anaerobic hydraulic retention time on biological nitrogen and phosphorus removal in a membrane bioreactor[J].Desalination,2011,270(1-3):227-232.
[4]Farizoglu B,Keskinler B,Yildiz E,et al.Simultaneous removal of C,N,P from cheese whey by jet loop membrane bioreactor(JLMBR)[J].Journal of Hazardous Materials,2007,146(1-2):399-407.
[5]Chae S R,Shin H S.Effect of condensate of food waste(CFW)on nutrient removal and behaviours of intercellular materials in a vertical submerged membrane bioreactor(VSMBR)[J].Bioresource Technology,2007,98(2):373-379.
[6]Kim H S,Choung Y K,Ahn S,et al.Enhancing nitrogen removal of piggery wastewater by membrane bioreactor combined with nitrification reactor[J].Desalination,2008,223(1-3):194-204.
[7]李红岩,张昱,高峰,等.水力停留时间对活性污泥系统的硝化性能及其生物结构的影响[J].环境科学,2006,27(9):1862-1865.Li H Y,Zhang Y,Gao F,et al.Effects of hydraulic retention time(HRT)on nitrification performance and microbial community of conventional activated sludge(CAS)[J].Environmental Science,2006,27(9):1862-1865.
[8]Nogueira R,Melo L F,Purkhold U,et al.Nitrifying and heterotrophic population dynamics in biofilm reactors:effects of hydraulic retention time and the presence of organic carbon[J].Water Research,2002,36(2):469-481.
[9]Wang Y Y,Peng Y Z,Stephenson T.Effect of influent nutrient ratios and hydraulic retention time(HRT)on simultaneous phosphorus and nitrogen removal in a two-sludge sequencing batch reactor process[J].Bioresource Technology,2009,100(14):3506-3512.
[10]Wu P,Ji X M,Song X K,et al.Nutrient removal performance and microbial community analysis of a combined ABR-MBR(CAMBR)process[J].Chemical Engineering Journal,2013,232(9):273-279.
[11]刘捷,吴鹏,沈耀良.CAB-MBR复合反应器实现亚硝化-脱氮除磷的启动研究[J].环境工程学报,2014,8(8):3247-3252.Liu J,Wu P,Shen Y L.Start-up of CAB-MBRnitrosationnitrogen and phosphorus removal[J].Chinese Journal of Environmental Engineering,2014,8(8):3247-3252.
[12]程朝阳,赵诗惠,吕亮,等.基于ABR-MBR组合工艺优化反硝化除磷性能的研究[J].环境科学,2016,37(11):4282-4288.Cheng C Y,Zhao S H,LüL,et al.Optimization of denitrifying phosphorus removal performance based on ABR-MBR combined process[J].Environmental Science,2016,37(11):4282-4288.
[13]American Public Health Association,AWWA(American Water Works Association),Water Environment Federation.Standard methods for the examination of water and wastewater(17th ed.)[M].American Public Health Association,1989.
[14]尹航,何理,卢健聪,等.水力停留时间对生物膜/颗粒污泥耦合工艺脱氮除磷的影响[J].化工学报,2014,65(6):2294-2300.Yin H,He L,Lu J C,et al.Effect of hydraulic retention time on nitrogen and phosphorus removal bybiofilm and granular coupling process[J].CIESC Journal,2014,65(6):2294-2300.
[15]杜接弟,王毅力,李炯,等.HRT对ABR处理低浓度废水的效果和颗粒污泥特征的影响[J].环境科学,2009,30(7):2022-2029.Du J D,Wang Y L,Li J,et al.Impact of hydraulic retention time(HRT)in ABR on its operation performance and granular sludgecharacteristics when treating low-strength wastewater[J].Environmental Science,2009,30(7):2022-2029.
[16]芦家娟,王毅力,赵洪涛,等.ABR反应器的启动及颗粒污泥特征的研究[J].环境化学,2007,26(1):10-16.Lu J J,Wang Y L,Zhao H T,et al.Thestart-up of anaerobic baffled reactor(ABR)and the characteristics of granular sludge[J].Environmental Chemistry,2007,26(1):10-16.
[17]芦家娟,王毅力,侯立安,等.ABR成熟颗粒污泥的分形特征与尺度效应[J].环境科学,2005,26(4):118-123.Lu J J,Wang Y L,Hou L A,et al.Fractal characteristics and scale dependence of mature granular sludge in anaerobic baffled reactor(ABR)[J].Environmental Science,2005,26(4):118-123.
[18]姜潇,王毅力,张桐,等.厌氧折流板反应器(ABR)中成熟颗粒污泥的分形分析[J].环境科学学报,2008,28(4):647-658.Jiang X,Wang Y L,Zhang T,et al.Fractal analysis on mature granular sludge in an anaerobic baffled reactor(ABR)[J].Acta Scientiae Circumstantiae,2008,28(4):647-658.
[19]Castignetti D,Hollocher T C.Heterotrophic nitrification among denitrifiers[J].Applied and Environmental Microbiology,1984,47(4):620-623.
[20]Robertson L A,Kuenen J G.Aerobic denitrification—old wine in new bottles?[J].Antonie van Leeuwenhoek,1984,50(5-6):525-544.
[21]程继辉,吴鹏,程朝阳,等.基于优质碳源提供的CAMBR复合工艺短程硝化-反硝化除磷研究[J].环境科学,2015,36(12):4539-4545.Cheng J H,Wu P,Cheng C Y,et al.Shortcut nitrosationdenitrifying phosphorus removal based on high-quality carbon source in combined process of CAMBR[J].Environmental Science,2015,36(12):4539-4545.
[22]Zhang H M,Wang X L,Xiao J N,et al.Enhanced biological nutrient removal using MUCT-MBR system[J].Bioresource Technology,2009,100(3):1048-1054.