改进型MBR处理生活污水及减缓膜污染的效能研究

MBR王宏杰1,董文艺2,白微2,尹文超2,杨跃1,李伟光1(1.哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090;2.哈尔滨工业大学深圳研究生院,广东深圳518055):通过长期运行试验,考察了改进型膜生物反应器(MBR)对污染物的去除效果和减缓膜污染的能力结果表明,改进型MBR对COD和NH3-N的去除效果与传统MBR的类似,出水COD和NH3-N分别低于50mg/L和5mg/L;改进型MBR对TN的去除效果优于传统MBR,且具有更好的减缓膜污染的能力,在近90d的连续运行过程中,改进型MBR的膜组件仅需清洗2次,而传统MBR的膜组件则清洗了5次:改进型MBR;生活污水;处理效能;膜污染;跨膜压力:X703.1:A:1000-4602(2008)13-0001-04EfficiencyofModifiedMBRforDomesticSewageTreatmentandMembraneFoulingAlleviationWANGHongjie1,DONGWenyi2,BAIWei2,YINWenchao2,YANGYue1,LIWeiguang1(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.ShenzhenGraduateSchool,HarbinInstituteofTechnology,Shenzhen518055,China)Abstract:Throughalongtermexperimen,ttheperformanceofmodifiedmembranebioreactor(MBR)forcontaminantsremovalandmembranefoulingalleviationwasinvestigated.TheresultsshowthattheremovaleffectofCODandNH3-NbythemodifiedMBRissimilartothatbythetraditionalMBR.TheeffluentCODandNH3-Ninbothprocessesarelessthan50mg/Land5mg/L.However,theremovaleffectofTNbythemodifiedMBRissuperiortothatbythetraditionalMBR,andithasbetterperformanceforalleviatingmembranefouling.Inanoperationalperiodof90d,themodifiedMBRwascleanedonly2timeswhereasthetraditionalMBRwascleaned5times.Keywords:modifiedMBR;domesticsewage;removalefficiency;membranefouling;transmembranepressure(TMP):(2006BAB17B04);([2006]1222006-21)(MBR)[1~4],[5~7],!1!241320087CHINAWATER&WASTEWATERVo.l24No.13Ju.l2008,[89],MBR,[10],Fane[11]1981MLSS,Shimizu[12],K.Yamamoto[13],MBR,MLSSS.Katayon[14]MBR,MLSS,5.03L/(m2!h)2.27L/(m2!h)R.ShaneTrussell[15],,,,MBR,,1材料与方法1111MBRFig.1SchematicdiagramofmodifiedMBRandtraditionalMBR,,MBR15L;MBR20L,,15L,5LMBR,MLSS,0.2m,0.2m2/,212,,pHCOD600mg/L,TN38mg/L,NH3-N24mg/L13COD:∀;NH3-N:;TN:∀;MLSS:;;14MBR,MLSS2000mg/LMBR,11Tab.1OperationconditionsHRT/h/min/minDO/(mg!L-1)8.012.03.04~6:#MBRHRT;∃MBRDODO2结果与讨论21211CODMBRCOD22MBRCODFig.2RemovalofCODinmodifiedMBRandtraditionalMBR2,MBRCOD,90%,COD50mg/L,%&(GB/T18920∀2002)MBRCOD,CODMBRCODMBR,!2!2413(GB/T18920∀2002)213TNMBRTN44MBRTNFig.4RemovalofTNinmodifiedMBRandtraditionalMBR4,MBRTN,MBRTN50%,MBRTN75%,DO,,DO,TNTN,,,MBRTNTN;MBR,DO,,TNMBR22,MBR55MBRFig.5VariationsofMLSSwithoperationtimeinmodifiedMBRandtraditionalMBR5,MBR,,8000mg/L;MBR,MBR1000mg/L(TMP),,TMP-0.045MPaMBRTMP()6MBR,6,90d,MBR2,MBR5,MBR,!3!:MBR24136MBRTMPFig.6VariationsofTMPwithtimeinmodifiedMBRandtraditionalMBR3结论#MBRMBR,CODNH3-N,COD50mg/L,NH3-N5mg/L,%&(GB/T18920∀2002)∃MBRTN75%,MBR50%∋MBR,,90d2,MBR5:[1],.[J].,2007,26(4):126-130.[2],,,.[J].,1998,11(1):40-44.[3],,.MBR[J].,2008,24(3):5-8.[4],,.MBR[J].,2006,22(5):50-52.[5]ThomasH,JuddS,MurrerJ.Foulingcharacteristicsofmembranefiltrationinmembranebioreactors[J].MembrTechno,l2000,122:10-13.[6],,,.MBR[J].,2008,24(7):49-51.[7]LaineJM,CamposC,BaudinI,etal.Understandingmembranefouling:areviemofoveradecadeofresearch[J].WaterSciTechno:lWaterSupply,2003,3(5-6):155-164.[8],,,.[J].,2007,23(5):26-29.[9],,.[J].,2008,59(1):209-213.[10],,,.MBR[J].,2008,24(5):40-44.[11],.[J].,2001,17(10):1-4.[12]ShimizuY,OkunoYI,UryuK,etal.Filtrationcharacteristicsofhollowfibermicrofiltrationmembranesusedinmembranebioreactorfordomesticwastewatertreatment[J].WaterRes,1996,30(10):2385-2392.[13]YamamotoK,HissaM,MahmoodT,etal.Directsolidliquidseparationusinghollowfibermembraneinanactivatedaerationtank[J].WaterSciTechno,l1989,21(4):43-54.[14]KatayonS,MegatMohdNoorMJ,AhmadJ,etal.Effectsofmixedliquorsuspendedsolidconcentrationsonmembranebioreactorefficiencyfortreatmentoffoodindustrywastewater[J].Desalination,2004,167:153-158.[15]ShaneTrussellR,RionMerlo,SlawomirWHermanowicz,etal.Influenceofmixedliquorpropertiesandaerationintensityonmembranefoulinginasubmergedmembranebioreactorathighmixedliquorsuspendedsolidsconcentrations[J].WaterRes,2007,41(5):947-958.:(1983-),,,,:(0755)2603348213480967809E-mail:[e-mail]:2008-04-03!4!2413