DO对MBBR同步硝化反硝化生物脱氮影响研究王学江

34420064()JOURNALOFTONGJIUNIVERSITY(NATURALSCIENCE)Vo.l34No.4　Apr.2006:2004-02-27:“”(2002AA601320);(PCRRF04008);(HBWDEP-2003-06):(1974-),,,.E-mail:[e-mail]王学江,夏四清,陈　玲,赵建夫(,　200092):(MBBR).,(DO)2mgL-1、8h、50%,MBBR90%.DO.,,,,.:;;;:X506　　　　　　:A　　　　:0253-374X(2006)04-0514-04EffectofDOonSmiultaneousNitrificationandDenitrificationinMBBRWANGXuejiang,XIASiqing,CHENLing,ZHAOJianfu(StateKeyLaboratoryofPollutionControlandResourcesReuse,TongjiUniversity,Shanghai200092,China)Abstract:Themovingbedbiofilmreactor(MBBR),wherethebiomassisattachedtosmallplasticcarri-erelementsthatmovefreelyalongwiththewaterinthereactor,hasbeentestedforsimultaneousnitrifica-tionanddenitrification(SND)formunicipalwastewater.TheSNDcanbesuccessfullyestablishedatdis-solvedoxygen(DO)ofabout2mgL-1,andabove90%oftotalnitrogen(TN)removalefficiencythroughSNDhasbeenfoundinthesystem.ItseemsthataphysicalphenomenonisresponsibleforSNDintheMBBR,inparticulartheoxygendiffusionlimitation.Thesystem'sperformanceindicatesthatasin-glestageaerobicbiofilmcanbedevelopedtomeettheincreasinglystringentregulationsoneffluentnitro-gendischarges,whichaffordsseveraladvantagesovertheconventionalsystems.Keywords:biologicaltreatment;suspendedcarrier;biofilm;denitrification　　,,、[1],、..,.,,,,().　4,:DOMBBR　　,,,,,.,[2,3].,[4]、[5]、[6]30%,(simultaneousnitrificationdenitrifi-cation,SND).SND,.,,(),(),,10%.(MBBR)2090,.,,.,,.,,,.DO(),DO,,.MBBR,DOSND,MBBR.1　1.6.5L.,CODcr50～350mgL-1,11.2～27.8mgL-1,(TP)3.1～4.2mgL-1,(CaCO3)180mgL-1;pH7.6.,,25mm2.,,0.90～0.98kgL-1.,,,.,,,,.2　3∶1,3、、,1、,,CODcr50%,.,DO,DO,.2.1　DOCODcrDO6,4,21mgL-1、8h,CODcr3.3,DO4,6mgL-1,CODcr96%95%.DO2mgL-1,,CODcr.DO1mgL-1,CODcr89%,CODcr,.,、,CODcr,DO2mgL-1.2.2　DOMBBR4DOMBBR515　　　()34　.4,DO2mgL-1,DOMBBR,97%～99%,1mgL-1.DO1mgL-1,84%,..,,DO[7].3　DOCODcrFig.3　CODcrremovalefficienciesatdifferentDOconcentrations　　5,6MBBR.6,DO6mgL-1,MBBR,((1)(2)),.,,.,,.,(),().1975,Voet,-(shortnitrification-denitrifica-tion,SND),,.SNDSND:①25%,;②40%,CN;③,,50%;④,.SND,.NH+4+1.5O2HNO2+H++H2O(1)HNO2+0.5O2HNO3(2)4　DOFig.4　NH+4—NremovalefficiencyatdifferentDOlevels5　DOFig.5　NO3—NconcentrationsintheeffluentatdifferentDOlevels6　DOFig.6　NO2—NconcentrationsintheeffluentatdifferentDOlevels2.3　MBBR7,DOTN,DO4mgL-1,TN30%516　4,:DOMBBR　　.DO,DO,,,TN.,,DO,,.DO,,,,.4～6,DO2mgL-1,MBBR,,TN.DO,MBBR,TN90%.DO1mgL-1,,,(),DO,MBBR,,TN,50%TN.7　DOTNFig.7　TNremovalefficiencyatdifferentDOlevels2.4　DO2mgL-1,8h,,8.,;,DO,.2.5　MBBR,,、、.,,,.,()DO(9).,、;,,,.DO,,.,,.DO2mgL-1,,CODcr,,.,,DO.,.8　Fig.8　Analysisofmicroorganismonsuspendedcarrier9　DOFig.9　Patternofdissolvedoxygenconcentrationinsideabiofilm　　,,.(538)517　　　()34　4　,.,eM,.,,,.,.:[1]　,,,.[J].,2003(10):1.　　SUIBo,DUDong,CHANGBaohua,eta.lVisualinformationmodelincar-body-in-whiteweldingprocess[J].TransactionsoftheChinaWeldingInstitution,2003(10):1.[2]　,,,.[J].,2002(11):2.　　XIONGDaoquan,HANZandong,DUDong,eta.lThequalityinfor-mationsystemforthemanufacturingprocessofbodyinwhite[J].ComputerSystemApplication,2002(11):2.[3]　.[J].,2001(11):1.　　SHENLibing.Car-bodyassemblyinformationexpressionbasedonbodyassemblytree[J].MechanicalScienceandTechnology,2001(11):1.(编辑:陶文文)(517)、DO、,.3　.50%、8h、DO2mgL-1,MBBR90%.、、、、.,,,.:[1]　MarcoAGZ,SimónGM.Biologicalphosphateandnitrogenre-movalinabiofilmsequencingbatchreactor[J].WatSciTech,1996,34:293.[2]　ElisabethVM,PaulL,JürgK.Simultaneousnitrificationanddeni-trificationinbench-scalesequencingbatchreactors[J].WatRes,1996,30:277.[3]　O'NeillM,HoranNJ.Achievingsimultaneousnitrificationanddenitrificationofwastewatersatreducedcost[J].WatSciTech,1995,32:303.[4]　HaoXD,DoddemaHJ,JohanW,eta.lConditionsandmecha-nismsaffectingsimultaneousnitrificationanddenitrificationinapasveeroxidationditch[J].BioTech,1997,59:207.[5]　MünchEV,LantPA,KellerJ.Simultaneousnitrificationanddenitrificationinbench-scalesequencingbatchreactors[J].WatRes,1996,30:277.[6]　WatanabeY,MasudaS,IshiguroM.Simultaneousnitrificationanddenitrificationinmicro-aearbicbiofilm[J].WatSciTech,1992,26:511.[7]　ФdegaardH,RustenB,WestrumT.Anewmovingbedbiofilmre-actor—applicationsandresults[J].WatSciTech,1994,29:157.(编辑:曲俊延)538