基于TUD模型模拟优化MSBR工艺反硝化脱氮除磷_汪林

第5卷第12期环境工程学报Vol．5，No．122011年12月ChineseJournalofEnvironmentalEngineeringDec．2011基于TUD模型模拟优化MSBR工艺反硝化脱氮除磷汪林1张代钧1，2，3*李振亮1，4(1．重庆大学环境科学系，重庆400030;2．重庆大学杂煤气层瓦斯抽采国家地方联合工程实验室，重庆400030;3．西南资源开发及环境灾害控制工程教育部重点实验室，重庆400030;4．重庆教育学院，重庆400030)摘要基于TUD模型(delftuniversityoftechnologymodel)对实验室MSBR(modifiedsequencingbatchreactor)工艺进行了模拟与优化，强化反硝化除磷，以提高系统脱氮除磷效率。结果表明，工艺运行参数为厌氧池90min、好氧池90min、SBR池缺氧段150min、污泥回流比1.0和污泥龄15d时，MSBR工艺COD、TN以及磷酸盐去除效率达95%，92%和83%;SBR池缺氧段吸磷量达到23.20mg/L，占系统总吸磷量43%左右;好氧池和SBR池缺氧段平均吸磷速率分别为0.35～0.42和0.12～0.17mgPO3－4-P/(L·min)。TUD模型能够较好模拟各水质组分在MSBR工艺空间和时间上的浓度分布，COD和NH+4-N的模拟误差低于15%，PO3－4-P模拟值高于实测值5%左右。关键词TUD模型反硝化除磷改良型序批反应器模拟优化中图分类号X703文献标识码A文章编号1673-9108(2011)12-2727-06SimulationandoptimizationtothedenitrifyingphosphorusandnitrogenremovalofMSBRbasedonTUDmodelWangLin1ZhangDaijun1，2，3LiZhenliang1，4(1．DepartmentofEnvironmentalScience，ChongqingUniversity，Chongqing400030，China;2．StateandLocalJointEngineeringLaboratoryofMethaneDrainageinComplexCoalGasSeam，ChongqingUniversity，Chongqing400030，China;3．KeyLaboratoryofSouthwest-ChinaResourceExploitation＆EnvironmentalDisasterControlEngineering，MinistryofEducation，Chongqing400030，China;4．CollegeofChongqingEducation，Chongqing400030，China)AbstractBasedonTUDmodel(delftuniversityoftechnologymodel)，abench-scaleMSBR(modifiedsequencingbatchreactor)wassimulatedandoptimizedtoenhancedenitrifyingphosphorusremovalforimprovingnitrogenandphosphorusremovalefficiency．Theresultedshowedthatwhenthehydraulicretentiontimeofanae-robictank，aerobictankandanoxicphaseofSBR，sludgereturnratioandsludgeretentiontimewere90min，90min，150min，1．0and15d，respectively，COD，TNandphosphorusremovalrateswereabout95%，92%and83%．ThephosphorusuptakecapacityinanoxicphaseofSBRwasupto23.20mg/L，whichwas43%ofthetotalphosphorusuptake．Themeanaerobicandanoxicphosphorusuptakeratewas0.35～0.42and0.12～0.17mgPO3－4-P/(L·min)，respectively．TUDmodelcouldmodelthetimelyconcentrationdistributionintheMSBRwell，whereversimulationerrorofCODandNH+4-Nwaslowerthan15%，thesimulatedvaluesregardingPO3－4-P