高氮城市生活垃圾渗滤液短程生物脱氮张树军

26520065　　　　　　ActaScientiaeCircumstantiaeVo.l26,No.5May,2006:(50521140075);;SupportedbytheKeyInternationalCooperationProjectfinancedbyNationalNaturalScienceFoundationChina(50521140075);TheOpenProjectofKeyLaboratoryofBeijing;TechnologyProjectforGraduatefromBeijingUniversityofTechnology:(1970—),,();E-mail:[e-mail]*():E-mail:[e-mail]:ZHANGShujun(1970—),male,engineer(Ph.D.candidate),E-mail:[e-mail];*Correspondingauthor,E-mail:[e-mail],,　,.2006.[J].,26(5):751-756ZhangSJ,PengYZ,ZengW,etal.2006.Nitrogenremovalfromhighnitrogenmunicipallandfillleachatevianitritationanddenitritation[J].ActaScientiaeCircumstantiae,26(5):751-756[]:张树军1,彭永臻1,*,曾　薇1,郑淑文1,周　利21.北京工业大学,环境与能源工程学院,北京1000222.青岛理工大学环境与市政学院,青岛266033:2006-03-23　　　:2006-03-24:“UASB--”CODNH+4-N.180:UASB1(UASB)UASB2(UASB)COD12.5、8.5kgm-3d-1,UASB1NO-x-N3.0kgm-3d-1.COD80%～92%,COD800～1500mgL-1.NH+4-N1100～2000mgL-1,A/ONH+4-N0.68kgm-3d-1;17～30℃,NO-2-N90%～99%,NH+4-N99%,NH+4-N15mgL-1.NO-x-NUASB1A/O,TIN80%～92%.,A/OpH8.5,,,(FA).pHA/O,(NOB),.:;UASB;A/O;;;FISH:0253-2468(2006)05-0751-06　　　:X703.1　　　:ANitrogenremovalfromhighnitrogenmunicipallandfillleachatevianitritationanddenitritationZHANGShujun1,PENGYongzhen1,*,ZENGWei1,ZHENGShuwen1,ZhouLi21.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing1000222.InstituteofEnviyonmentMunicipalEngineering,QingdaotechnologycalUniversity,Qingdao266033Received23March2006;　　　accepted24March2006Abstract:Asystemconsistedoftwo-stageUASB-Anoxic/Oxicreactor(A/O)wasusedtotreatmunicipallandfillleachatewithhighCODandammoniaconcentration.The180daysoperationalresultsshowedthatthemaximumorganicremovalrateinUASB1andUASB2was12.5and8.5kgm-3d-1,respectively.ThemaximumNOx-NremovalrateinUASB1was3.0kgm-3d-1.CODremovalefficiencyofthesystemwas80%～92%witheffluentCODof800～1500mgL-1.AttherawNH+4-Nof1100～2000mgL-1,themaximumNH+4-Nremovalratewas0.68kgm-3d-1.At17～30℃,theNH+4-Nremovalefficiencywasabout99%bynitritationwitheffluentNH+4-Nlessthan15mgL-1.TheNOx-NinrecirculatedeffluentandreturnsludgewascompletelydenitrifiedintheUASB1andanoxiczoneofA/Oreactor,respectively.Thetotalinorganicnitrogen(TIN)removalefficiencywas80%～92%.Duetothealkalinitysupplementfromcompletedenitrification,pHwasmorethan8.5causingthemaintenanceofhigh-strengthfreeammonia(FA)intheA/Oreactor.High-strengthFAwasamainreasonresultinginnitritation.TheaerationtimeintheA/OwasadjustedbyusingpHascontrollingparametertoachievemicrobiologicalcommunityoptimization;meanwhilethestablenitritationwasattained.Keywords:municipallandfillleachate;UASB;A/O;highammonia;nitritationanddenitritation;freeammonia;FISH　　(“”)、、..,,.DOI:牨牥牨牫牰牱牨牤jhjkxxb牪牥牥牰牥牭牥牥牴　　　　　　　　　　26.,,,(Imetal.,2001).,、.,,.,,pH,,,,,.,(Wuetal.,2004;Ahnetal.,2002;Barisetal.,2005;Tainaetal.,2000;Timuretal.,1999),,(Kabdaslietal.,2000;Heaveyetal.,2003;Kennedyetal.,2000).,“UASB-A/O”.UASB1,UASB,,,.,,,.1　(Materialsandmethods)1.1　试验流程与水质1,UASBA/O.UASB15cm,210cm,4.25L.UASB28cm,200cm,8.25L.A/O15L,10,1.UASB,UASB1UASB230、35℃,15～32℃.UASB,A/O.,,Raw;U1iUASB1();U1eUASB1;U2eUASB2;Ano.A/O(A/O);O2～O10A/O(2～10).,,,,1.,,.1　“UASB+A/O”Fig.1　Flowdiagramofthetwo-stageUASB-A/O1　Table1　CharacteristicsoftheleachatemgL-1pHCODBOD5NH+4-NNO-2-NNO-3-NTPTN7.2～7.97000～250003500～140001100～20000.5～1.50.5～8.09～151250～2450SSCl-CrS2-Al3+AsCu2+NiSe400～8002800～60000.18～0.998000～110008.8～500.11～4.68NDNDNDND7525:1.2　分析方法CODCOD;;N—(1-)—;;;Cl-、SO2-4(Metrohm761compactIC).N2O(Aglient6890NnetworkGCsystem);;DO、pH、(WTWDO330i,WTWpH330i);.2　(Results)2.1　COD的去除UASB1,UASB1NO-x-N,(COD)UASB2,A/OCODNH+4-N.CODUASB,A/O(COD),NO-x-N,(COD),.180d,,COD,800～1500mgL-1,COD80%～92%.UASB1UASB2COD12.5、8.5kgm-3d-1,UASB1NO-x-N3.0kgm-3d-1.2.2　氮转化与去除A/O2.NH+4-N1100～2000mgL-1,,pH(Polliceetal.,2002).UASB1NH+4-N300～600mgL-1,,.NH+4-N,A/ONH+4-N150～400mgL-1.NH+4-N0.20～0.69kgm-3d-1,NH+4-N99.5%,NH+4-N15mgL-1.DO、FA、pH,390%～99%,NO-3-N10mgL-1,NO-2-N90～380mgL-1.,UASB1A/ONO-x-N100%,TIN80%～92%.,.2A/OTable2　OperationalconditionsandresultsofA/Oreactor/d/(Ld-1)NH+4-N/(mgL-1)HRT/dNLR/(kgm-3d-1)NH+4-N/(mgL-1)0～1410.030025%1.50.20125%1515～2110.050050%1.50.33125%1522～285.5885125%2.70.33125%1529～535.51200125%2.70.44125%1554～1235.51880300%2.70.69100%15124～1535.51300350%2.50.54100%15154～1813.31550200%4.10.46100%153　(Discussion)3.1氮转化和去除过程分析300%,100%,,COD、TIN、NH+4-N、NO-2-NNO-3-N2.COD9550mgL-1,UASB1COD3253mgL-1,UASBCOD2286mgL-1,A/OCOD1504mgL-1,COD.NH+4-N1240mgL-1,UASB1NH+4-N278mgL-1,UASBNH+4-N236mgL-1,A/ONH+4-N121mgL-1,5NH+4-N19mgL-1,,NH+4-N11mgL-1.UASB1753　　　　　　　　　　26NO-2-N80mgL-1,UASB1A/O,NO-2-N,2,NO-2-N0mgL-1.,,NO-2-N102mgL-1.NO-3-N11mgL-1,.2　CODFig.2　CODandnitrogenvariationintheflowpathTIN,NH+4-N,NH+4-N,TIN;,,TIN127mgL-1,TIN114mgL-1,.,N2O.TIN(1).η=ReRe+1+1-ReRe+1×RsRs+1(1),Re,Rs.(1):NH+4-N100%;UASB1A/O100%;UASBNH+4-N.NH+4-NUASB1A/O,TIN..UASB1(Harmsenetal.,1996).3.2　脱氮过程中pH与碱度的变化34pH.,UASB1pH.UASB1,UASB1pH.UASB25786mgL-15981mgL-1,pH8.328.12.,A/O1pHUASB28.128.68,5981mgL-14495mgL-1.,pH8.56,3426mgL-1,.,3　pHFig.3　ThevariationofpHinthef