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3912200612JournalofTianjinUniversityVol.39No.12Dec.2006UASBK23,,(,300072):(UASB).,UASBEckenfelder,UASBK2,.UASB,K2.,K2UASB,K2k,;K2UASB.:;;;:X703.1:A:049322137(2006)1221405206KineticParameterK2intheStart2upProcessofUASBReactorWANGJie,ZHANGHong2wei,JIAHui(SchoolofEnvironmentScienceandEngineering,TianjinUniversity,Tianjin300072,China)Abstract:Controllingstrategyinup2flowanaerobicsludgeblanket(UASB)start2upprocessisakeyaspectinoperation.Toprovidesomeparametersforoperationonsite,basedonEckenfelderequationandfullymixedmodel,akineticparameterK2whichcangenerallyreflectthecharacteristicsofsludgeconcentrationandmicro2organismmetabolicvelocitywasintroducedinthisstudy.Additionally,thetemperature2modifiedequationofK2wasdeduced.ThecharacteristicsandtrendsofK2instart2upprocessesofalabscaleandapilotwerestu2died.TheresultsrevealedthatK2representedtheperformanceofUASBatdifferentorganicloads.Alinearfit2tingmethodwasused,andtheslopeofthetrendlinereflectedthespeedofactivemicroorganismaccumulationinthereactor.Theslopecanberegardedasanindextoevaluatethestart2upstrategy.Accordingtodesignedhydraulicretentiontimeandexpectedremovalefficiency,K2isasignofstart2upsuccessofUASBreactor.Keywords:up2flowanaerobicsludgeblanket;start2upprocess;lowconcentrationwastewater;kineticparame2ter(up2flowanaerobicsludgeblan2ket,UASB),.,,UASB.UASB[13],,.,UASB3:;,;.,,,UASB,UASB3:2006203222;:2006206201.:(033113811).:(1979),,,wangjiemailbox@yahoo.com.cn.,UASB.11.1UASBVanDerMeerHeertjesUASB[4]:(1),;(2),,,;(3),,.,1UASB,VbdSbdt=Q0S0+QdbSd-QbdSb-qbXbVb(1)VddSddt=QkS0+QbdSb-QdbSd-QSd-qdXdVd(2)(1)(2)VbdSbdt+VddSddt=QS0-QSd-qbXbVb-qdXdVd(3)1UASBFig.1WorkingmodelofUASBreactorUASB,,.UASB,,,,Xd=Xb=X,Sb=Sd=Se,qd=qb.,dSb/dt=0,dSd/dt=0,(3)qbXVr=QS0-QSe(4)Echenfelder[5]46,,,,,dSdt=-K2XSe(5)(5)(4)S0-SeSe=K2X(6)UASB2:X,.[6](6)UASBK2.,,,(6)K2,,K2,K2=K2X(7)(6)S0-Se=K2Se(8)K2K2,.(8)1(S0Se-1)=K2(9)=1-SeS0(9)(1-)=K2(10)(10),K2,,K2.,,Se,K2.K2,K2.,K2Arrhenius[5]K2(T)=K2(20)(T-20)t(11)(9)(10)1(S0Se-1)(20-T)t=K2(20)(12)(1-)(20-T)t=K2(20)(13)1.2K2(7),K2K2,60413912,.,K2,K2.(8),K2.K2,K2.UASBUASB,[7].,(9),(K2)2:,();,.,,,,K2,,K2.,K2,,K2,,,K2,,2.(a)K2K2(b)K2K22K2Fig.2PossibletrendofK2UASB,,,,,K2,2.UASB,(10)K2(K2).,K2,K2K2.(6)K2,K2K2,2:K2K2,2(a),,;K2K2,,.,K2.K2,,K2,,,2(b).2K2UASBUASB[8]UASB,K2.2.1UASBUASB3,6.28L,,COD400600mg/L,NH4HCO3KH2PQ4,NaHCO3pH.,51.18g/L,2L.3COD.1;2;3;4UASB;5;6;7;8.3Fig.3Schematicdiagramoftheexperimentalsystem7041200612:UASBK2(35),.3,(hydraulicretentiontime,HRT)28.369.346.5h.1,,15d;2,1,COD,;3,.COD4.4UASBCODFig.4InfluentandeffluentCODandremovalefficiencyinthelabscaleUASBstart2upprocess4050h,COD50mg/L,K2.(9)K25.5,K2,K2,55dK2,K2,60d,.0.51mm,61d,,K2,K2UASB.5UASBK2Fig.5KineticparameterK2inthelabscaleUASBstart2upprocess2.2UASBUASB[7],,[7]1.1UASBTab.1ParametersofpilotscaleUASBreactorstart2up/m/m/m3/m3/COD/(mgL-1)BOD/(mgL-1)pH1.55.28.05.31523.2254.0873.0260.0347.07.08.080413912,,UASB,.,,.7d,K2,,K2,6.1.5m3/h,COD800/0,(13)K2.6,36dK2K2,.,(9)K2(12)K2.6UASBK2Fig.6KineticparameterK2inthepilotscaleUASBstart2upprocess3K2(7),K2(),K2.,(12)K2,K2.K2,K2.,K2,78.7UASBK2Fig.7CurveofK2inthelabscaleUASBstart2upprocess8UASBK2Fig.8CurveofK2inthepilotscaleUASBstart2upprocessK2k1=0.0028k2=0.0206,UASB.,K2.,,,(PAC).(12)K2(20),9041200612:UASBK2,K2(20).4(1)UASBEchenfelderK2UASB.(2)UASBK2,K2UASB,K2K2,.ArrheniusK2,.(3)K2,UASB,UASB.:K2,1/(mgs);K2,1/s;K2(20)20K2;K2,1/s;Q,m3/s;Q0,m3/s;Qk,m3/s;Qbd,m3/s;Qdb,m3/s;Qg,m3/s;Qgb,m3/s;Qgd,m3/s;qb,1/s;qd,1/s;S0,mg/L;Sb,mg/L;Sd,mg/L;Se,mg/L;Vr,m3;Vb,m3;Vd,m3;Vpf,m3;Xb,mg/L;Xd,mg/L;,=Vr/Q(T);COD;t,1.031.15,1.09.:[1]RodrguezJA,PeÌaMR,ManziV.Applicationofanin2novativemethodologytoimprovethestarting2upofUASBre2actorstreatingdomesticsewage[J].WaterScienceandTech2nology,2001,44(4):295303.[2]PauloPL,JiangB,RoestK,etal.Start2upofathermophi2licmethanol2fedUASBreactor:Changeinsludgecharacter2istics[J].WaterScienceandTechnology,2002,45(10):145150.[3],,,.UASB[M].:,2000.WangKaijun,ZuoJiane,GanHainan,etal.TheTheoryandImplementationofUASBReactorConceptinChina[M].Beijing:ChinaEnvironmentalSciencePress,2000(inChi2nese).[4]VanDerMeerRR,HeertjesDM.Mathematicaldescriptionofanaerobictreatmentofwastewaterinupflowreactors[J].BiotechnologyandBioengineering,1983,25(11):25312556.[5].[M].:,1993.GuXiasheng.MathematicalModelofWastewaterBiologicalTreatment[M].Beijing:TsinghuaUniversityPress,1993(inChinese).[6].UASB[J].,1995,23(2):192196.ZhouQi.Mechanismoflowerconcentrationwastewatertreat2mentwiththeUASBreactor[J].JournalofTongjiUniversi2ty,1995,23(2):192196(inChinese).[7].[M].:,1998.HeYanling.AnaerobicBiotechnologyTreatmentforWastewater[M].Beijing:ChinaLightIndustryPress,1998(inChinese).[8],,.UASB[J].,2002,28(3):1518.ChenXuemin,WangLijie,FuXiaoyong.Ambienttempera2turestart2upofUASBreactortreatingdomesticsewage[J].WaterandWastewaterEngineering,2002,28(3):1518(inChinese).01413912