基于模型的污水厂氧化沟工艺运行优化研究
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摘要
为提高污水厂出水水质,实现稳定运行、节能降耗的双重目标,针对苏州某污水厂二期工程"厌氧+卡鲁塞尔氧化沟+二沉池"工艺,利用该厂多年积累的运行经验和历史数据,引入模拟技术,建立污水厂生物处理工艺模型。针对该厂全年进水典型情景,系统、定量地分析了污水厂运行过程中存在的主要问题,并有针对性地制定优化方案。模拟和运行实践结果表明:通过调控曝气转碟控制方案及泥龄控制策略,可使全年出水COD、NH_4~+-N、TN、SS浓度从一级B标准提升至一级A标准,且吨水单耗降低了约29.4%,节能效果显著。
The process of anaerobic-Carrousel oxidation ditch-secondary settling tank is adopted in a wastewater treatment plant( WWTP). In order to improve effluent quality,and to realize the dual goal of stable operation and energy saving,its biological treatment process model was built with simulation method according to the operation experience and historical data accumulated over the years. Under the typical influent condition during the whole year,main problems in the operation of the WWTP were analyzed systematically and quantitatively,and then the optimization plan was made accordingly. Simulation and practice results showed that,by adjusting control scheme of the aeration discs and the sludge age,effluent COD,NH_4~+-N,TN and SS could be improved from first level B discharge standard to first level A discharge standard. At the same time,energy consumption per ton of wastewater was reduced by about29. 4%.
The process of anaerobic-Carrousel oxidation ditch-secondary settling tank is adopted in a wastewater treatment plant( WWTP). In order to improve effluent quality,and to realize the dual goal of stable operation and energy saving,its biological treatment process model was built with simulation method according to the operation experience and historical data accumulated over the years. Under the typical influent condition during the whole year,main problems in the operation of the WWTP were analyzed systematically and quantitatively,and then the optimization plan was made accordingly. Simulation and practice results showed that,by adjusting control scheme of the aeration discs and the sludge age,effluent COD,NH_4~+-N,TN and SS could be improved from first level B discharge standard to first level A discharge standard. At the same time,energy consumption per ton of wastewater was reduced by about29. 4%.
引文
[1]刘彦菲,陈滢,卢凤华,等.某城市污水厂运行中出现的问题及解决问题对策[J].环境工程,2013,31(1):27-29,94.Liu Yanfei,Chen Ying,Lu Fenghua,et al.Discussion on problems in operation and solutions of a municipal sewage plant[J].Environmental Engineering,2013,31(1):27-29,94(in Chinese).
[2]朱雁伯,袁楠楠,姜威,等.我国城镇污水厂运行管理中存在的问题及对策[J].中国给水排水,2012,28(18):30-34.Zhu Yanbo,Yuan Nannan,Jiang Wei,et al.Problems and solutions in operation management of municipal sewage treatment plants in China[J].China Water&Wastewater,2012,28(18):30-34(in Chinese).
[3]王龙,井汇,赵玉兰.某污水厂氧化沟改造后能耗现状及节能分析[J].建筑热能通风空调,2014,33(4):67-69.Wang Long,Jing Hui,Zhao Yulan.The energy consumption status and energy saving analysis of a sewage treatment plant oxidation ditch after transformation[J].Building Energy&Environment,2014,33(4):67-69(in Chinese).
[4]Henze M,Grady C P L,Gujer W,et al.Activated Sludge Model NO.1—IAWPRC Scientific and Technical Report NO.1[R].London:IAWPRC,1987.
[5]Henze M,Gujer W,Mino T,et al.Activated Sludge Model NO.2—IAWQ Scientific and Technical Report NO.2[R].London:IAWQ,1995.
[6]Henze M,Gujer W,Mino T,et al.Activated sludge model No.2D,ASM2D[J].Water Sci Technol,1999,39(1):165-182.
[7]Gujer W,Henze M,Mino T,et al.Activated sludge model No.3[J].Water Sci Technol,1999,39(1):183-193.
[8]张春明,郑燕,贾剑,等.上海市龙华水质净化厂工艺模型建立及模拟优化分析[J].中国给水排水,2011,27(24):60-63.Zhang Chunming,Zheng Yan,Jia Jian,et al.Analysis on process modeling and optimizing of Longhua Wastewater Treatment Plant in Shanghai[J].China Water&Wastewater,2011,27(24):60-63(in Chinese).
[9]马昭,刘玉玲,巩书涵,等.基于ASM2D模型对奥贝尔氧化沟工艺的模拟研究[J].环境工程学报,2016,10(12):6947-6955.Ma Zhao,Liu Yuling,Gong Shuhan,et al.Simulation research of orbal oxidation ditch process based on ASM2D[J].Chinese Journal of Environmental Engineering,2016,10(12):6947-6955(in Chinese).
[10]Sarkar U,Dasgupta D,Bhattacharya T,et al.Dynamic simulation of activated sludge based wastewater treatment processes:Case studies with Titagarh sewage treatment plant,India[J].Desalination,2010,252(1):120-126.
[11]Vandekerckhove A,Moerman W,Van Hulle S W H.Full-scale modelling of a food industry wastewater treatment plant in view of process upgrade[J].Chem Eng J,2008,135:185-194.
[12]Melcer H,Dold P L,Jones R M,et al.Methods for Wastewater Characterisation in Activated Sludge Modeling[M].Alexandria:Water Environment Research Foundation(WERF),2003.
[13]Liwarskabizukojc E,Olejnik D,Biernacki R,et al.Calibration of a complex activated sludge model for the fullscale wastewater treatment plant[J].Bioproc Biosyst Eng,2011,34(6):659-670.
[14]Knapp L A.Study of Process Control Strategies for Biological Nutrient Removal in an Oxidation Ditch[D].Florida:University of South Florida,2014.
[2]朱雁伯,袁楠楠,姜威,等.我国城镇污水厂运行管理中存在的问题及对策[J].中国给水排水,2012,28(18):30-34.Zhu Yanbo,Yuan Nannan,Jiang Wei,et al.Problems and solutions in operation management of municipal sewage treatment plants in China[J].China Water&Wastewater,2012,28(18):30-34(in Chinese).
[3]王龙,井汇,赵玉兰.某污水厂氧化沟改造后能耗现状及节能分析[J].建筑热能通风空调,2014,33(4):67-69.Wang Long,Jing Hui,Zhao Yulan.The energy consumption status and energy saving analysis of a sewage treatment plant oxidation ditch after transformation[J].Building Energy&Environment,2014,33(4):67-69(in Chinese).
[4]Henze M,Grady C P L,Gujer W,et al.Activated Sludge Model NO.1—IAWPRC Scientific and Technical Report NO.1[R].London:IAWPRC,1987.
[5]Henze M,Gujer W,Mino T,et al.Activated Sludge Model NO.2—IAWQ Scientific and Technical Report NO.2[R].London:IAWQ,1995.
[6]Henze M,Gujer W,Mino T,et al.Activated sludge model No.2D,ASM2D[J].Water Sci Technol,1999,39(1):165-182.
[7]Gujer W,Henze M,Mino T,et al.Activated sludge model No.3[J].Water Sci Technol,1999,39(1):183-193.
[8]张春明,郑燕,贾剑,等.上海市龙华水质净化厂工艺模型建立及模拟优化分析[J].中国给水排水,2011,27(24):60-63.Zhang Chunming,Zheng Yan,Jia Jian,et al.Analysis on process modeling and optimizing of Longhua Wastewater Treatment Plant in Shanghai[J].China Water&Wastewater,2011,27(24):60-63(in Chinese).
[9]马昭,刘玉玲,巩书涵,等.基于ASM2D模型对奥贝尔氧化沟工艺的模拟研究[J].环境工程学报,2016,10(12):6947-6955.Ma Zhao,Liu Yuling,Gong Shuhan,et al.Simulation research of orbal oxidation ditch process based on ASM2D[J].Chinese Journal of Environmental Engineering,2016,10(12):6947-6955(in Chinese).
[10]Sarkar U,Dasgupta D,Bhattacharya T,et al.Dynamic simulation of activated sludge based wastewater treatment processes:Case studies with Titagarh sewage treatment plant,India[J].Desalination,2010,252(1):120-126.
[11]Vandekerckhove A,Moerman W,Van Hulle S W H.Full-scale modelling of a food industry wastewater treatment plant in view of process upgrade[J].Chem Eng J,2008,135:185-194.
[12]Melcer H,Dold P L,Jones R M,et al.Methods for Wastewater Characterisation in Activated Sludge Modeling[M].Alexandria:Water Environment Research Foundation(WERF),2003.
[13]Liwarskabizukojc E,Olejnik D,Biernacki R,et al.Calibration of a complex activated sludge model for the fullscale wastewater treatment plant[J].Bioproc Biosyst Eng,2011,34(6):659-670.
[14]Knapp L A.Study of Process Control Strategies for Biological Nutrient Removal in an Oxidation Ditch[D].Florida:University of South Florida,2014.