高氮城市生活垃圾渗滤液短程生物脱氮

26520065ActaScientiaeCircumstantiaeVol.26,No.5May,2006:(50521140075);;SupportedbytheKeyInternationalCooperationProjectfinancedbyNationalNaturalScienceFoundationChina(50521140075);TheOpenProjectofKeyLaboratoryofBeijing;TechnologyProjectforGraduatefromBeijingUniversityofTechnology:(1970),,();E2mail:[e-mail]3():E2mail:[e-mail]:ZHANGShujun(1970),male,engineer(Ph.D.candidate),E2mail:[e-mail];3Correspondingauthor,E2mail:[e-mail],,,.2006.[J].,26(5):751-756ZhangSJ,PengYZ,ZengW,etal.2006.Nitrogenremovalfromhighnitrogenmunicipallandfillleachatevianitritationanddenitritation[J].ActaScientiaeCircumstantiae,26(5):751-756[]:1,1,3,1,1,211,,10002221,266033:2006203223:2006203224:UASB22CODNH+42N.180:UASB1(UASB)UASB2(UASB)COD12.58.5kgm-3d-1,UASB1NO-x2N3.0kgm-3d-1.COD80%92%,COD8001500mgL-1.NH+42N11002000mgL-1,A/ONH+42N0.68kgm-3d-1;1730,NO-22N90%99%,NH+42N99%,NH+42N15mgL-1.NO-x2NUASB1A/O,TIN80%92%.,A/OpH8.5,,,(FA).pHA/O,(NOB),.:;UASB;A/O;;;FISH:025322468(2006)0520751206:X70311:ANitrogenremovalfromhighnitrogenmunicipallandfillleachatevianitritationanddenitritationZHANGShujun1,PENGYongzhen1,3,ZENGWei1,ZHENGShuwen1,ZhouLi21.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing1000222.InstituteofEnviyonment&MunicipalEngineering,QingdaotechnologycalUniversity,Qingdao266033Received23March2006;accepted24March2006Abstract:Asystemconsistedoftwo-stageUASB2Anoxic/Oxicreactor(A/O)wasusedtotreatmunicipallandfillleachatewithhighCODandammoniaconcentration.The180daysoperationalresultsshowedthatthemaximumorganicremovalrateinUASB1andUASB2was12.5and8.5kgm-3d-1,respectively.ThemaximumNOx2NremovalrateinUASB1was3.0kgm-3d-1.CODremovalefficiencyofthesystemwas80%92%witheffluentCODof8001500mgL-1.AttherawNH+42Nof11002000mgL-1,themaximumNH+42Nremovalratewas0.68kgm-3d-1.At1730,theNH+42Nremovalefficiencywasabout99%bynitritationwitheffluentNH+42Nlessthan15mgL-1.TheNOx2NinrecirculatedeffluentandreturnsludgewascompletelydenitrifiedintheUASB1andanoxiczoneofA/Oreactor,respectively.Thetotalinorganicnitrogen(TIN)removalefficiencywas80%92%.Duetothealkalinitysupplementfromcompletedenitrification,pHwasmorethan8.5causingthemaintenanceofhigh2strengthfreeammonia(FA)intheA/Oreactor.High2strengthFAwasamainreasonresultinginnitritation.TheaerationtimeintheA/OwasadjustedbyusingpHascontrollingparametertoachievemicrobiologicalcommunityoptimization;meanwhilethestablenitritationwasattained.Keywords:municipallandfillleachate;UASB;A/O;highammonia;nitritationanddenitritation;freeammonia;FISH()..,,.26.,,,(Imetal.,2001).,.,,.,,pH,,,,,.,(Wuetal.,2004;Ahnetal.,2002;Barisetal.,2005;Tainaetal.,2000;Timuretal.,1999),,(Kabdaslietal.,2000;Heaveyetal.,2003;Kennedyetal.,2000).,UASB2A/O.UASB1,UASB,,,.,,,.1(Materialsandmethods)1.11,UASBA/O.UASB15cm,210cm,4.25L.UASB28cm,200cm,8.25L.A/O15L,10,1.UASB,UASB1UASB23035,1532.UASB,A/O.,,Raw;U1iUASB1();U1eUASB1;U2eUASB2;Ano.A/O(A/O);O2O10A/O(210).,,,,1.,,.1UASB+A/OFig.1Flowdiagramofthetwo-stageUASB2A/O1Table1CharacteristicsoftheleachatemgL-1pHCODBOD5NH+42NNO-22NNO-32NTPTN7.27.9700025000350014000110020000.51.50.58.091512502450SSCl-CrS2-Al3+AsCu2+NiSe400800280060000.180.998000110008.8500.114.68NDNDNDND2575:1.2CODCOD;;N(12);;;Cl-SO2-4(Metrohm761compactIC).N2O(Aglient6890NnetworkGCsystem);;DOpH(WTWDO330i,WTWpH330i);.2(Results)2.1CODUASB1,UASB1NO-x2N,(COD)UASB2,A/OCODNH+42N.CODUASB,A/O(COD),NO-x2N,(COD),.180d,,COD,8001500mgL-1,COD80%92%.UASB1UASB2COD12.58.5kgm-3d-1,UASB1NO-x2N3.0kgm-3d-1.2.2A/O2.NH+42N11002000mgL-1,,pH(Polliceetal.,2002).UASB1NH+42N300600mgL-1,,.NH+42N,A/ONH+42N150400mgL-1.NH+42N01200.69kgm-3d-1,NH+42N99.5%,NH+42N15mgL-1.DOFApH,390%99%,NO-32N10mgL-1,NO-22N90380mgL-1.,UASB1A/ONO-x2N100%,TIN80%92%.,.2A/OTable2OperationalconditionsandresultsofA/Oreactor/d/(Ld-1)NH+42N/(mgL-1)HRT/dNLR/(kgm-3d-1)NH+42N/(mgL-1)01410.030025%1.50.20125%15152110.050050%1.50.33125%1522285.5885125%2.70.33125%1529535.51200125%2.70.44125%15541235.51880300%2.70.69100%151241535.51300350%2.50.54100%151541813.31550200%4.10.46100%153(Discussion)3.1300%,100%,,CODTINNH+42NNO-22NNO-32N2.COD9550mgL-1,UASB1COD3253mgL-1,UASBCOD2286mgL-1,A/OCOD1504mgL-1,COD.NH+42N1240mgL-1,UASB1NH+42N278mgL-1,UASBNH+42N236mgL-1,A/ONH+42N121mgL-1,5NH+42N19mgL-1,,NH+42N11mgL-1.UASB135726NO-22N80mgL-1,UASB1A/O,NO-22N,2,NO-22N0mgL-1.,,NO-22N102mgL-1.NO-32N11mgL-1,.2CODFig.2CODandnitrogenvariationintheflowpathTIN,NH+42N,NH+42N,TIN;,,TIN127mgL-1,TIN114mgL-1,.,N2O.TIN(1).=ReRe+1+1-ReRe+1RsRs+1(1),Re,Rs.(1):NH+42N100%;UASB1A/O100%;UASBNH+42N.NH+42NUASB1A/O,TIN..UASB1(Harmsenetal.,1996).3.2pH34pH.,UASB1pH.UASB1,UASB1pH.UASB25786mgL-15981mgL-1,pH8.328.12.,A/O1pHUASB28.128.68,5981mgL-14495mgL-1.,pH8.56,3426mgL-1,.,3pHFig.3ThevariationofpHintheflowpath4Fig.4Alkalinityvariationintheflowpath4575:pH.,(AOB)H+,(NOB).,2500mgL-1..NH+42N1550mgL-1,1gNH+42N7.14g(CaCO3),1550mgL-1NH+42N11067mgL-1,800011000mgL-1.,.5534mgL-1,.,.,pH.FA,,.,,pHFA,,(Bernhardetal.,2003).,.3.3,,(Jeniceketal.,2004;Ruizetal.,20