高氮渗滤液短程深度脱氮及反硝化动力学孙洪伟

1,1＊,1,1,2,1(1.,　100124;2.,　230088):UASB-SBR,,SBR.,、.UASBCOD6.5kg(m3·d),5.3kg(m3·d).COD6537mg·L-1,NH+4-N2021mg·L-1,354mg·L-12.8mg·L-1,94.6%99.8%,99.2%TN,TN20mg·L-1,.SBR,90%,SBRMonod.:;UASB-SBR;;;:X703.1　:A　:0250-3301(2010)01-0129-05:2009-02-28;:2009-05-04:“”(2008ZX07317-007-1);(8091001);(50808128):(1976～),,,,E-mail:[e-mail]＊,E-mail:[e-mail]lviaNitritefromLandfillLeachatewithHighNitrogenConcentrationandKineticsofDenitritationSUNHong-wei1,WANGShu-ying1,ZHANGShu-jun1,YANGQing1,HOUHong-xun2,PENGYong-zhen1(1.KeyLaboratoryofBeijingWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China;2.AnhuiGuozhenEnvironmentalProjectionSci.&Tech.Co.Ltd.,Hefei230088,China)Abstract:Thetreatmentofrealleachatefrommunicipallandfillwithhighammonianitrogen(NH+4-N)contentwasinvestigatedbyusinglab-scalefirst-stageup-flowanaerobicsludgebed(UASB)-SBRbiologicalsystem.ThedenitritationkineticscharacteristicsofmicrobialpopulationintheSBRreactorwasalsostudied.ExperimentalresultsclearlyshowedthattheaverageorganicloadingrateofUASBreactorreached6.5kg(m3·d),theaverageorganicremovalratewas5.3kg(m3·d).HighconcentrationsofCODandnitrogencontainedinlandfillleachatewereremovedefficiently,averageCODandNH+4-Nofinfluentcouldbereducedfrom6537mg·L-1and2021mg·L-1to354mg·L-1and2.8mg·L-1,respectively,theremovalefficienciesreached94.6%and99.8%,respectively.Especially,above99.2%removalefficiencyofTNwasobtained,andeffluentTNconcentrationbelow20mg·L-1,soadvancednitrogenremovalwasachievedinthebiologicalsystem.Ammonianitrogenwasremovedbyhigheffectivepartialnitrificationwithabove90%nitriteaccumulationratio,andthedenitritationkineticscharacteristicsofthemicrobialpopulationwasfitwellforMonodEquation.Keywords:landfillleachate;first-stageUASB-SBR;advancednitrogenremoval;partialnitrification;kinetic　　,、[1].,“”.、.,,[2～4],,.(NH+4-N※NO-3-N)(NO-3-N※N2)2.,NO-2-N,NO-3-N,(NaR)、(NiR)、(NOR)(N2OR),NO-3-NNO-2-N、NO、N2O,N2[5].,NO-2-N[6].,25%,40%,,[7].、、pH[8].,31120101　　　　　　ENVIRONMENTALSCIENCEVol.31,No.1Jan.,2010DOI:10.13227/j.hjkx.2010.01.015,UASB-SBR,、、;SBR.1　1.1　,4℃,1.1.2　UASB-SBR,2、UASB、SBR.1.,50L.10L,UASB.UASB、50、70、400mm,、40、60、600mm,1.5L.SBR,12L,.UASB30℃±2℃,SBR.SBRUASB,、.UASBSBR,-.SBR:※※、※()※、.SBRUASB,,NO-x-N,,.1.3　1　mg·L-1Table1　Characteristicoflandfillleachatemg·L-1pHCODTNNH+4-NNO-3-NNO-2-N　7.8～8.98.31038～809156311005～24442140890～236018630.8～10.55.60.2～16.32.01　UASB-SBRFig.1　Schematicdiagramofthefirst-stageUASB-SBRbiologicalsystem　　　NH+4-N、NO-3-N、NO-2-N、COD、[9].TN、TON、TC、TOC、TICTNTOC(MultiNC3000,).WTWDO、ORP、pH.1.4　UASB,.SBR,,“”.2　2.1　UASB-SBRUASB:1d,6.5kg(m3·d),3∶1.COD2.2　CODUASB-SBRFig.2　VariationoftheCODconcentrationinfirst-stageUASB-SBRsystem130　　　　　　31　　113d,NOx--NSBR(3∶1)UASB,,CODUASB2.UASBSBR,COD354mg·L-1..,UASB、SBR81.1%、13.5%94.6%.,COD6537mg·L-1,COD354mg·L-1,94.6%,、.2.2　UASB-SBRSBR:15.2～31.4℃,DO1.0mg·L-1,pH8.9,CN=5∶1,,、DO、ORP、pH[10],:30min,:30min.UASB-SBR3.3(a),,、NH+4-N.NH+4-N2021mg·L-1,2.8mg·L-1,99.8%,CN2∶1～3∶1.,SBR2,Ⅰ,,SBRNO-3-N,NO-2-N.Ⅱ,NO-2-N,NO-3-N5mg·L-1.3(b).,UASBTN、COD、NH+4-N,SBR(NH+4-N※NO-2-NNO-3-N),UASBSBRNO-x-N,.,UASBNO-2-NSBR.UASBNO-x-N1mg·L-1,100%.SBRUASB,SBR.SBR,,,SBRCOD,SBR100%.TNUASB-SBR,TN2444mg·L-1,TN18.6mg·L-1,99.2%.2.3　、ICpHpH、.pH,.,1gNH+4-N7.14g(CaCO3,),1gNO-3-N3.57g,.、ICpH4.3113.7mg·L-1,640.0mg·L-1,SBR,(R)UASB,:UASB=+R×1+RRaw:;UASB-i:UASB;UASB-e:UASB;SBR-Ni:SBR;SBR-Ne:SBR;SBR-DNi:SBR;SBR-DNe:SBR3　UASB-SBRFig.3　Variationofthenitorgeninthefirst-stageUASB-SBRsystem1311:　　,UASB,,.UASB、pH,UASB.UASB、NO-x-N(78.3mg·L-1),275.9mg·L-1.4　、ICpHFig.4　Variationsofthealkalinity,ICandpHinthesystem　SBR,,pH,pH.0.34,0.5.,SBR,IC、pH,,,HCO-3.HCO-3(98.3%),CO-3,IC(HCO-3)HCO-3.HCO-3HCO-3IC,pH.,UASB、TN,SBR.Peng[11],,.,pH,.,,pH,.,.2.4　SBRSBR,,.NO-2-N,(1)[3]:r=ci-ceXt(1),r,[g·(g·d)-1];ciceNO-2-N(mg·L-1);t(h);X,VSS(mg·L-1).,NO-2-N,r,,5,Monod[12],:y=-0.043×exp(-x0.122)-0.413×exp(-x25.494)+0.4598R2=0.993　　,.,.,,k=0.435g(g·d),Ks=15.77mg·L-1.5　NO-2-NMonodFig.5　MonodEquationusingnitriteaselectronacceptor　3　(1)UASB-SBR,COD6537mg·L-12021mg·L-1,354mg·L-12.8mg·L-1,94.6%99.8%.(2)UASBSBR100%,99.2%TN,TN20mg·L-1,.(3)UASB-SBRTN、132　　　　　　31SBR,,UASB、SBR、.(4)SBRMonod,k=0.435g(g·d),Ks=15.77mg·L-1.:[1]　,.[M].:,2005.[2]　AnthonisenAC,LoehrRC,PrakasamTBS,etal.Inhibitionofnitrificationbyammoniaandnitrousacid[J].JWaterPollutControlFed,1976,48(5):835-852.[3]　KimDJ,LeeDI,KellerJ.EffectoftemperatureandfreeammoniaonnitrificationandnitriteaccumulationinlandfillleachateandanalysisofitsnitrifyingbacterialcommunitybyFISH[J].BioresourceTech,2006,97(3):459-468.[4]　VadiveluVM,YuanZG,FuxC,etal.TheinhibitoryeffectsofFreenitricacidontheenergygenerationandgrowthprocessofanenrichedNitrobactorculture[J].BiotechnolandBioeng,2006,40(14):4442-4448.[5]　chobanoglousG,BurtonFB,StenselHD.Wastewaterengineeringtreatmentandreuse[M].(FourthEdition).USA:McGraw-HillCompanies,2003.[6]　,,,.、[J].,2004,12(5):7-10.[7]　TurkO,MavinciDS.Selectiveinhibition:anovelconceptforremovingnitrogenfromhighlynitrogenouswastes[J].EnvironTechLett,1987,8