交替式间歇曝气移动床生物膜反应器同步脱氮除磷
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摘要
中试研究了交替式间歇曝气移动床生物膜反应器(MBBR)处理低含量城市污水,考察了反应器RI(填装聚氨酯海绵填料)和RII(填装聚乙烯悬浮填料)在不同间歇周期运行模式下的运行性能。结果表明,2组反应器运行良好。在合适的工况条件下,RI出水COD和NH3-N、TN、TP、SS的质量浓度平均分别为21.23 mg/L和3.27、5.92、0.55、9 mg/L;RI的同步脱氮除磷效果优于RII,COD和SS处理效果与后者相当。在污水低碳源状况下,RI采用的间歇周期变水位运行模式有利于提高污水中碳源的利用率,改善反应器同步脱氮除磷性能。交替式间歇曝气MBBR,能够在单级反应器同一物理空间内同步实现碳氮磷和SS的有效去除,降低曝气消耗,提高同步硝化反硝化效率。
An alternating intermittent aeration sequencing moving bed biofilm reactor(MBBR) was used to treat low strength municipal wastewater. In a pilot-scale plant, the performances of reactor RI and reactor RII were investigated by using different sequencing batch operation modes. The results show that the performances of the two reactors are good. The average effluent concentration of COD, and mass concentration of NH3-N, TN, TP, SS in the RI is 21.23 mg/L, and 3.27 mg/L, 5.92 mg/L, 0.55 mg/L, 9 mg/L, respectively, under suitable operation conditions. The RI is more efficient in simultaneous nitrogen and phosphorus removal and similar in COD removal and solids separation comparing with that of the RII. Under the condition of low carbon source in sewage, the variable water level operation mode adopted by the RI is beneficial to improve the utilization rate of carbon source and enhance the performance of nutrient removal. The alternating intermittent aeration MBBR can achieve simultaneous removal of carbon, nitrogen, phosphorus and solids separation in the same physical space of single-stage reactor, reduce aeration consumption and increase the efficiency of simultaneous nitrification and denitrification.
An alternating intermittent aeration sequencing moving bed biofilm reactor(MBBR) was used to treat low strength municipal wastewater. In a pilot-scale plant, the performances of reactor RI and reactor RII were investigated by using different sequencing batch operation modes. The results show that the performances of the two reactors are good. The average effluent concentration of COD, and mass concentration of NH3-N, TN, TP, SS in the RI is 21.23 mg/L, and 3.27 mg/L, 5.92 mg/L, 0.55 mg/L, 9 mg/L, respectively, under suitable operation conditions. The RI is more efficient in simultaneous nitrogen and phosphorus removal and similar in COD removal and solids separation comparing with that of the RII. Under the condition of low carbon source in sewage, the variable water level operation mode adopted by the RI is beneficial to improve the utilization rate of carbon source and enhance the performance of nutrient removal. The alternating intermittent aeration MBBR can achieve simultaneous removal of carbon, nitrogen, phosphorus and solids separation in the same physical space of single-stage reactor, reduce aeration consumption and increase the efficiency of simultaneous nitrification and denitrification.
引文
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[2]李军,彭永臻,顾国维,等.SBBR同步硝化反硝化处理生活污水的影响因素[J].环境科学学报,2006,26(5):728-733.
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[8]THIRD K A, GIBBS B, NEWLAND M, et al. Long-term aeration management for improved N-removal via SND in a sequencing batch reactor[J].Water Research,2005,39(15):3523-3530.
[9]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,2002:243-284.
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[11]LE S T T, KHANITCHAIDECHA W, NAKARUK A. Effect of aeration rates on simultaneous nitrification and denitrification in intermittent aerated bioreactor[J].Asian Journal of Microbiology Biotechnology&Environmental Sciences,2015,17(3):757-761.
[12]王玉晓,孔秀琴,冯权,等.以亲水性改性聚氨酯为多孔载体的生物膜移动床反应器处理污水中试研究[J].环境科学,2012,33(10):3489-3494.
[13]张洪雷,方舟,艾力江·努尔拉,等.两级A/O填料型MBR工艺的脱氮除磷效果[J].中国给水排水,2013,29(13):42-46.
[14]POCHANA K, KELLER J. Study of factors affecting simultaneous nitrification and denitrification(SND)[J].Water Science&Technology,1999,39(6):61-68.
[15]MA Y, PENG Y Z, WANG X L, et al. Nutrient removal performance of an anaerobic-anoxic-aerobic process as a function of influent C/P ratio[J].Journal of Chemical Technology and Biotechnology,2005,80(10):1118-1124.
[16]WANG X X, WANG S Y, XUE T L, et al. Treating low carbon/nitrogen(C/N)wastewater in simultaneous nitrification-endogenous denitrification and phosphorous removal(SNDPR)systems by strengthening anaerobic intracellular carbon storage[J].Water Research,2015,77:191-200.
[17]VAN LOOSDRECHT M C M, POT M A, HEIJNEN J J. Importance of bacterial storage polymers in bioprocesses[J].Water Science&Technology,1997,35(1):41-47.
[18]DIRCKS K, HENZE M, VAN LOOSDRECHT M C M, et al. Storage and degradation of poly-β-hydroxybutyrate in activated sludge under aerobic conditions[J].Water Research,2001,35(9):2277-2285.
[19]RAHIMI Y, TORABIAN A, MEHRDADI N, et al. Simultaneous nitrification-denitrification and phosphorus removal in a fixed bed sequencing batch reactor(FBSBR)[J].Journal of Hazardous Materials,2011,185(2/3):852-857.
[20]ARNZ P, ARNOLD E, WILDERER P A. Enhanced biological phosphorus removal in a semifull-scale SBBR[J].Water Science&Technology,2001,43(3):167-174.
[21]郭海燕,郭祯,柳志刚,等.不同曝气强度下SBMBBR和SBBR脱氮除磷性能对比研究[J].环境科学学报,2012,32(3):568-576.
[2]李军,彭永臻,顾国维,等.SBBR同步硝化反硝化处理生活污水的影响因素[J].环境科学学报,2006,26(5):728-733.
[3]XING X H, JUN B H, YANAGIDA M, et al. Effect of C/N values on microbial simultaneous removal of carbonaceous and nitrogenous substances in wastewater by single continuous-flow fluidized-bed bioreactor containing porous carrier particles[J].Biochemical Engineering Journal,2000,5:29-37.
[4]WANG B, WANG W, HAN H J, et al. Nitrogen removal and simultaneous nitrification and denitrification in a fluidized bed step-feed process[J].Journal of Environmental Sciences,2012,24(2):303-308.
[5]YANG S, YANG F L. Nitrogen removal via short-cut simultaneous nitrification and denitrification in an intermittently aerated moving bed membrane bioreactor[J].Journal of Hazardous Materials,2011,195:318-323.
[6]LIM B S, CHOI B C, YU S W, et al. Effects of operational parameters on aeration on/off time in an intermittent aeration membrane bioreactor[J].Desalination,2007,202(1/3):77-82.
[7]GUADIE A, XIA S Q, ZHANG Z Q, et al. Effect of intermittent aeration cycle on nutrient removal and microbial community in a fluidized bed reactor-membrane bioreactor combo system[J].Bioresource Technology,2014,156:195-205.
[8]THIRD K A, GIBBS B, NEWLAND M, et al. Long-term aeration management for improved N-removal via SND in a sequencing batch reactor[J].Water Research,2005,39(15):3523-3530.
[9]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,2002:243-284.
[10]ZENG R J, LEMAIRE R, YUAN Z G, et al. Simultaneous nitrification,denitrification, and phosphorus removal in a lab-scale sequencing batch reactor[J].Biotechnology and Bioengineering,2003,84(2):170-178.
[11]LE S T T, KHANITCHAIDECHA W, NAKARUK A. Effect of aeration rates on simultaneous nitrification and denitrification in intermittent aerated bioreactor[J].Asian Journal of Microbiology Biotechnology&Environmental Sciences,2015,17(3):757-761.
[12]王玉晓,孔秀琴,冯权,等.以亲水性改性聚氨酯为多孔载体的生物膜移动床反应器处理污水中试研究[J].环境科学,2012,33(10):3489-3494.
[13]张洪雷,方舟,艾力江·努尔拉,等.两级A/O填料型MBR工艺的脱氮除磷效果[J].中国给水排水,2013,29(13):42-46.
[14]POCHANA K, KELLER J. Study of factors affecting simultaneous nitrification and denitrification(SND)[J].Water Science&Technology,1999,39(6):61-68.
[15]MA Y, PENG Y Z, WANG X L, et al. Nutrient removal performance of an anaerobic-anoxic-aerobic process as a function of influent C/P ratio[J].Journal of Chemical Technology and Biotechnology,2005,80(10):1118-1124.
[16]WANG X X, WANG S Y, XUE T L, et al. Treating low carbon/nitrogen(C/N)wastewater in simultaneous nitrification-endogenous denitrification and phosphorous removal(SNDPR)systems by strengthening anaerobic intracellular carbon storage[J].Water Research,2015,77:191-200.
[17]VAN LOOSDRECHT M C M, POT M A, HEIJNEN J J. Importance of bacterial storage polymers in bioprocesses[J].Water Science&Technology,1997,35(1):41-47.
[18]DIRCKS K, HENZE M, VAN LOOSDRECHT M C M, et al. Storage and degradation of poly-β-hydroxybutyrate in activated sludge under aerobic conditions[J].Water Research,2001,35(9):2277-2285.
[19]RAHIMI Y, TORABIAN A, MEHRDADI N, et al. Simultaneous nitrification-denitrification and phosphorus removal in a fixed bed sequencing batch reactor(FBSBR)[J].Journal of Hazardous Materials,2011,185(2/3):852-857.
[20]ARNZ P, ARNOLD E, WILDERER P A. Enhanced biological phosphorus removal in a semifull-scale SBBR[J].Water Science&Technology,2001,43(3):167-174.
[21]郭海燕,郭祯,柳志刚,等.不同曝气强度下SBMBBR和SBBR脱氮除磷性能对比研究[J].环境科学学报,2012,32(3):568-576.