膜序批式生物反应器-MSBR-脱氮除磷性能研究

膜序批式生物反应器(MSBR)脱氮除磷性能研究郑楠,王强,张玉翠(中国矿业大学环境与测绘学院,江苏徐州221008)摘要[目的]研究膜序批式反应器系统(MSBR)对城市生活污水的脱氮除磷性能。[方法]采用厌氧-好氧-缺氧+膜出水的运行方式(AOA-MSBR),考察MSBR系统对生活污水的脱氮除磷性能去除效果,并分析氮磷的去除机理。[结果]在水力停留时间为11h,污泥浓度为4000～5000mg/L的条件下,通过AOA2MSBR运行方式可实现高效脱氮除磷功能,对COD,氨氮、总氮、总磷平均去除率分别达到95%、97%、89%和90%,且系统具有较强的抗冲击负荷能力。MSBR系统存在同步硝化反硝化和反硝化除磷现象,分别占总氮和总磷的总去除率的15.5%和16.5%。[结论]在厌氧一好氧一缺氧的环境下,MSBR系统具备很好的硝化和反硝化条件,有利于氮磷的去除,同时系统存在同步硝化反硝化和反硝化除磷现象,增强了对氮磷的去除能力。关键词膜序批式生物反应器;脱氮除磷;硝化反硝化;反硝化除磷中图分类号X703文献标识码A文章编号0517-6611(2009)30-15014-03StudyonPerformanceofNitrogenandPhosphorusRemovalbyUsingMembraneSequencingBatchBioreactorZHENGNanetal(SchoolofEnvironmentScienceandSpatialInformatics,ChinaUniversityofMiningandTechnology,Xuzhou,Jiangsu221008)Abstract[Objective]Thestudyaimedtoinvestigatetheperformanceofmembranesequencingbatchbioreactor(MSBR)ontheremovalofnitrogenandphosphorusinmunicipaldomesticsewage.[Method]Theoperationmodeofanaerobic2oxic2anoxic2membraneeffluentwater(AOA2MSBR)wasusedtoinvestigatetheeffectofMSBRsystemontheremovalofnitrogenandphosphorusinmunicipaldomesticsewage.[Result]Undertheconditionsofhydraulicretentiontime(HRT)of11h,sludgeconcn.of4000～5000mg/L,thehigheffectiveremovalsofnitrogenandphosphoruswereachievedthroughAOA2MSBRoperationmode,withtheremovalefficienciesofCOD,ammonian,totalnitrogenandtotalphosphorusupto95%,97%,89%and90%,resp.andtheMSBRsystemhadstrongerabilityofresistancetoimpactload.theMS2BRsystemexistedthesimultaneousnitrificationdenitrificationanddenitrifyingphosphorusremoval,accountingfor15.5%and16.5%oftotalremovalrateoftotalnitrogenandtotalphosphorus.[Conclusion]Intheenvironmentofanaerobic2oxic2anoxic,theMSBRsystemshowedthegoodconditionofnitrationanddenitrification,whichwaspropitioustotheremovalofnitrogenandphosphorusanditalsohadthesimultaneousnitrificationdenitrificationanddenitrifyingphosphorusremoval,whichstrengthenedtheremovalabilityonnitrogenandphosphorus.KeywordsMembranesequencingbatchreactor(MSBR);Nitrogenandphosphorusremoval;Nitrificationdenitrification;Denitrifyingphos2phorusremoval作者