SBBR同步硝化反硝化处理生活污水的影响因素

26520065ActaScientiaeCircumstantiaeVol.26,No.5May,2006:(No.50521140075);SupportedbytheNationalNaturalScienceFoundationofChinaforinternationalkeycooperation(No.50521140075)andtheKeyLabOpeningFoundationofBeijing:(1969),,();3,E2mail:[e-mail]:LIJun(1969),male,associateprofessor(postdoctor);3Correspondingauthor,E2mail:[e-mail],,,.2006.SBBR[J].,26(5):728-733LiJ,PengYZ,GuGW,etal.2006.FactorsaffectingsimultaneousnitrificationanddenitrificationinaSBBRtreatingdomesticwastewater[J].ActaScientiaeCircumstantiae,26(5):728-733SBBR1,2,3,1,31.,2000922.,1000223.,310014:2005208223:2006203204:2006203221:SBBR,.,,.(0.84.0mgL-1).4.0mgL-1,TN,TN..,TN,.,SBBRTN74%82%.:;SBBR;;;;:025322468(2006)0520728206:X70311:AFactorsaffectingsimultaneousnitrificationanddenitrificationinaSBBRtreatingdomesticwastewaterLIJun1,PENGYongzhen2,3,GUGuowei1,WEISu31.CollegeofEnvironmentalScienceandEngineering,TongjiUniversity,Shanghai2000922.CollegeofEnvironmentandEnergySources,BeijingPolytechnicUniversity,Beijing1000223.CollegeofCivilEngineering,ZhejiangUniversityofTechnology,Hangzhou310014Received23August2005;receivedinrevisedform4March2006;accepted21March2006Abstract:Anaerobicsequencingbatchbiofilmreactor(SBBR)packedwithBaoerringswasusedtotreatrealdomesticwastewater.Theaimwastoachievesimultaneousnitrificationanddenitrification.TheSBBRisadvantageoustocreateanoxiccondition,andbiofilmcanabsorbandstorecarbonforgoodnitrificationanddenitrification.Aconcentrationofaverageoxygenrangefrom0.8to4.0mgL-1wasprovedveryefficientfornitrificationanddenitrification.VolumetricloadsofTNweredroppeddramaticallyandeffluentTNconcentrationincreasedquicklywhentheconcentrationofaverageoxygenwasmorethan4.0mgL-1.Theefficiencyofsimultaneousnitrificationanddenitrificationincreasedwithincreasingofthicknessofthebiofilm.TheinfluentconcentrationhardlyaffectedtheTNremovalefficiency,buttheeffluentTNincreasedwithincreasingofinfluentconcentration.Itissuggestedthatasubsequencefordenitrificationisaddedorinfluentamountisdecreasedforrequirementofeffluentquality.Atoptimumoperatingparameters,theTNremovalefficiencyof74%82%couldbeachievedKeywords:sequencingbatchbiofilmreactor;SBBR;simultaneousnitrificationanddenitrification;dissolvedoxygen;biofilm;influentconcentrationSBBR(Sequencingbatchbiofilmreactor)(SBR),SBR,(Wildereretal.,2001;Wilderer,1995;Woolard,1997;Kaballo,1997).(SND),5:SBBR(Hibiyaetal.,2003;Yooetal.,1999;Senetal.,1998).,.,();,.,,.,.,(Pochanaetal.,1999a;Pochanaetal.,1999b).,.SBBR.SBBR,;;.SBBR,.1(Materialsandmethods)1.1SBBR5(Lietal.,2004),1.,200L,80cm40cm110cm.,.,,219m2m-3,42cm.,.,;.1SBBRFig.1SketchofexperimentalequipmentforSBBR1.2,,1822,:CODCr3001388mgL-1;BOD150700mgL-1;SS100400mgL-1;NH+42N10151mgL-1;TN20180mgL-1;TP415mgL-1.CODHACH;MLSSNH+42NNO-22NNO-32N.DOWTW.1.31.3.1SBBRSBR:.SBBR:.,1/3.1.3.2SNDTN80110mgL-1.TNTN.TN,TN,mg(Ld)-1,TN.NH+42N.1.3.3SND,CODNH+42N.,NH+42NTNTN.1.3.4SNDSBBR,,.,.:10,,,.1.3.5CODSBBR1L,.,,CODNH+42N..,.,COD92726NH+42N.2(Results)2.1SNDSBBR2SBBRCOD.SBBR.NH+42N,.NO-22NNH+42N,.,NO-22N.NO-32NNH+42N,,.TNNH+42N,.NO-32N,TN.2SBBRFig.2VariationsofnitrogenwithtimeinaSBBRforsimultaneousnitrificationanddenitrification2.2SBBRSND3SBBR.TNDO.DO,TN;DO2.54.0mgL-1,TN15mgL-1;DO4.0mgL-1,TN.3TNTNFig.3EffectsofDOonTNeffluentandTNvolumetricloadDO2.5mgL-1,TN,60mg(Ld)-1;DO2.73.6mgL-1,TNDO,,64113mg(Ld)-1;DO4.0mgL-1,TNDO,46mg(Ld)-1.2.3SND,COD/NH+42N(4),,NH+42NCOD.4NH+42NCODFig.4ThevaluesofNH+42NandCODintherawwastewater5NH+42N.3.23.6mgL-1,NH+42N(41.2119.1mgL-1),TN,.TN,(NH+42N)TNNH+42N.5NH+42NTNTNFig.5EffectsofinfluentNH+42NoneffluentTNandTNvolumetricload0375:SBBR2.4SND13.03.8mgL-1,NH+42NTN.1SNDTable1EffectofthicknessofthebiofilmonSND/mm/mg(Ld)-1NH+42NTN1.62.892980.81.6897800.88551,,NH+42N;TN.0.8mm,TN.2.56COD.,COD;40minCOD;CODCOD;COD.,COD.6CODFig.6AbsorptionofCODbasedondifferentconcentrationofrawwaterandtemperature7CODNH+42N.,CODNH+42N,:NH+42N.NH+42N.7CODNH+42NFig.7ReductionrateofCODandNH+42Nwithcontacttimeofwastewaterandbiofilmcarriers2.6SND:24mgL-1,NH+42N110mgL-1,19,2.8mm,,.8(58)TN.,,TN74%82%.8Fig.8TNremovalwithSNDincontinuousoperation3(Discussion)3.1SBBRTNTN,SBBR.,,:..13726.,.,,.,..,.,,.,COD,,,.,,;,,,,.,COD.COD,(Haoetal.,1997).,NH+42N,,.SBBR,,,.9SBBRSND.,.9SBBRSNDFig.9SubstancestransportationinthebiofilmforSNDinSBBR3.2SND(Senetal.,1998;Bertanza,1997),,12mgL-1.,,;,,,..,.,DO4.0mgL-1,TN,TN,.,.,,,.DO2.5mgL-1.DO2.54.0mgL-1,,NH+42NTN.SBBR.3.3SNDC/N(Pochanaetal.,1999b).C/N,.,,.TN.TN,.,,,,;,,.,.,TN,,.,.SBBR,.,,,TN.4(Conclusions)1)SBBR2375:SBBR,,.2)SBBR4.0mgL-1;4.0mgL-1,,TN.3).4),TN.5),SBBRTN74%82%.:,..350.E2mail:[e-mail]:BertanzaG.1997.Simultaneousnitrification-denitrificationprocessinextendedaerationplants:pilotandrealscaleexperiences[J].WatSciTech,35(6):5361HaoX,DoddemaHJ,GroenestijnW.1997.ConditionsandmechanismsaffectingsimultaneousnitrificationanddenitrificationinaPasveeroxidationditch[J].BioresourceTechnology,58:207215HibiyaK,TeradaA,TsunedaS,etal.2003.Simultaneousnitrificationanddenitrificationbycontrollingverticalandhorizontalmicroenvironmentinamembrane2aerate