多氯联苯在土壤水环境中生物降解过程规律研究

20006SHUILIXUEBAO6:19991227:(59909003).:(1964-),,,,.:05599350(2000)06000608刘凌1,崔广柏1,郝振纯1(1,210098):(PCB),,PCBPCB.AlcoaLTU.,2,3,45ClPCB.:;;:S1536:A(PCB),,,,,,.,(),.,..,,,,,,.,40,,,,,.,,,,,.,[1],,.,,Brown[2]Bedard[3],,:,,,,,(),,,,,.,.,Scow[4],:,!6!,;,,.,,,,,,,.,/,,,;Lehigh,;,,.,2345ClPCB,.1(Alcoa),,(EPA),AlcoaPCB.LTU2,Mossna,12m,091mm,125cm,15cm,,,,,.,2%,,,,.1995,,,10,,PCB:(1)1LTU2PCB/d9582409592633951137195112998961029335;(2)20~35w/w;(3)pH65~75;(4)15~20∀;(5),N10~25mg/kg(),P5~10mg/kg().10,,,,,PCB,.,.1.2!!,3:(1)(TS);(2)(CP);(3)(C).(TS),:(SI),(SR),,(SR),,,CO2,;(SI),!7!.!!,,(1).(1-)SRt+(1-)SIt+CPt=1r2rDPr2CPr(1)CP(M/L3);SR(M/M);SI(M/M);(M/L3);;DP(L2/T);r(L);t(T).(1),SR=KdCP(2):Kd(L3/M).,[5],:,,,,,.:,,SIt=KISR=KIKdCP(3):KI(1/T).(1),(4)(5).(4),;(5),,:;,Monod.CPrr=0=0,t!0(4)dCdt=-KCKs+C-(1-)#ASDPCPrr=a(5):C(M/L3),(),KS(M/L3),K(M/L3/T),#(M/L3),AS(L2/M),a(L).(1),(6)(7).:,,.CPt=0=Ct=0=C0,0∀r∀a(6)SRt=0=KdC0=S0,0∀r∀a(7),,,,!,.32.PCB,:(1)DP:!8!HaydukLaudie[6];(2)Kd;Curtis[7];(3):;(4)a:001cm,,001cm,:a001cm,,,001cm,;(5)MonodKSK:;(6)KI:,Alcoa1990.2PCB2ClPCB3ClPCB4ClPCB5ClPCB(-)015015015015(-)03030303/(kg/L)24242424a/cm001001001001KS/(mg/L)95∃10-212∃10-412∃10-350∃10-4K/(mg/L/h)()0028002400200023K/(mg/L/h)()00063000150001000028KI/(1/h)20∃10-650∃10-670∃10-690∃10-6Kd/(L/kg)795∃102233∃103857∃103257∃104DP/(cm2/s)641∃10-6612∃10-6586∃10-6563∃10-64PCBLTU2.LTU2,PCB,:LTU212,10,5,62PCB.PCBEPA,,(1%1)PCB,PCB,PCB,TS.3,,TS23TS/S0/d3371983352ClPCB0510350380173ClPCB0890770540384ClPCB1120810680665ClPCB1210880770786.3,S0PCB,TS/S0tPCB.1.1,,20%.,:(1):,;(2):PCB,,,,.,,,,LTU2PCB.5PCB,PCB,,PCB,,.!9!1PCB(AB,PB)PCBLTU22,,SR/S0PCB,SI/S0PCB,TS/S0PCB.2(a),2ClPCB,62%,,6,,14%,2ClPCB,,,.,2ClPCB.2PCB2(b)2(c)2(d),,28%3ClPCB24%4ClPCB18%5ClPCB,,71316,6%3ClPCB19%4ClPCB29%5ClPCB,!10!.PCB,,PCB,,.PCB,Kd,PCB,,PCB;,PCB,PCB,.,PCB,,PCB,PCB.,2,PCB(AB)(PB).,PCB,,,,PCBPCB,PCB.PCB,PCB,,MonodK.,PCB,PCB,[8],22PCB,,PCB,,PCB,PCB.Law[9],2!g/L~10!g/L.LTU2,PCB2!g/L,,,,,PCB,PCBPCB.3PCB3PCB.,CoPCB,CtPCB,C/CotPCB.,,PCB,,PCB.,PCB.,PCB,PCB,PCB,,,!11!,PCB,PCB,,PCB.3PCB.,SR/S0PCB,PCB,,SR/S0C/CoPCB,PCB.3(a),,2ClPCB,2ClPCB!Kd,,,,,,2ClPCB,2ClPCB2ClPCB,2ClPCB2ClPCB.3(b)3(c)3(d)345ClPCB.,,PCB,,,,,.,345ClPCB,PCBPCB,,PCBPCB.5ClPCBKd,PCB.455ClPCB,:(a);(b),;(c),;(d).45ClPCB55ClPCB4PCBTS/S0,,4,4.,125ClPCB,15%5ClPCB;,,195ClPCB,36%5ClPCB.,5ClPCB.5.5TS/S0,,C=0,.,,,5ClPCB,,.,,.,!12!,.6,,.Alcoa.,2345ClPCB,,5ClPCB:,PCB,!Kd,,5ClPCB,K.:[1]AlexanderM.BiodegradationandBioremediation[M].AcademicPress,SanDiego.1994,123-170.[2]BrownJF,BedardDL,BrennanMJ,CarnakanJC,FengH,WagnerRE.Polychlorinatedbiphenyldechlorinationinaquaticsediments[J].Science.1987a,(236):709-712.[3]BedardDL,QuensenJR.Microbialreductiondechlorinationofpolychlorinatedbiphenyls[M].MicrobialTransformationandDegradationofToxicOrganicChemicals.WileyLiss,Inc.1995,127-216.[4]ScowKM,SimkinsS,AlexanderM.Kineticsofmineralizationoforganiccompoundsatlowconcentrationsinsoil[J].Appl.Environ.Microbiol.1986,(51):1028-1035.[5]WangX,YuX,BarthaR.Effectofbioremediationonpolycyclicaromatichydrocarbonresiduesinsoil[J].Environ.Sci.Technol.1990,(24):1086-1089.[6]HaydukW,LaudieH.Predictionofdiffusioncoefficientsfornonelectrolytesindiluteaqueoussolutions[J].AlChE,J.1974,(20):611-615.[7]CurtisGP,RobertsPV,ReinhardM.Anaturalgradientexperimentandsolutetransportinasandaquifer:4.Sorptionororganicsolutesanditsinfluenceonmobility[J].WaterResourceResearch.1986,(22):2059-2067.[8]FochtDD,BrunnerWW.KineticsofBiphenylandPolychlorinatedBiphenylMetabolisminSoil[J].AppliedandEnvironmentalMicrobiology.1985,50(10):1058-1063.[9]LawAT,ButtonDK.MultipleCarbonSourceLimitedGrowthKineticsofaMarineCoryneformBacterium[J].JournalofBacteriology.1977,(129):115-123.StudyonbiodegradationofPCBsinsoilwatermicrobessystemLIULing1,CUIGuangbai1,HAOZhenchun1(1HohaiUniversity,JiangsuNanjing210098,China)Abstract:Basedonthemassbalancetheory,acomprehensivemathematicalmodel,concerningtheeffectsofdiffusion,sorption/desorption,biodegradation,especiallytheintraparticleirreversiblesequestration,hasbeendevelopedinthispaperinordertopredictorganicchemicalbiodegradationinremediationsite.ModelsimulationresultsmatchsuccessfullywiththefielddataofbioremediationprocessesinLTUsitesonAlcoa#sMassena,NewYork.Byusingthismodelandtheoreticalanalysis,2,3,4,and5ClPCBsbiodegradationprocessesandregularitiesincludingthetreatmenttimeandextentinremediationsiteshavebeenpredictedinthispaper.Keywords:polynuclearbiennials;biodegradationprocess;sequestration.!13!