AF反应器对芳香族化合物反硝化降解特性研究王文燕

AF,＊,,(,　100875):、,(AF),,CN.,,AF,COD1000mgL,、60mgL,COD90%,84%..CN5～30,90%,CN;COD、CN,CN15,COD、,90%、78%82%.:;AF;;;;:X703.1　:A　:0250-3301(2007)03-0540-05:2006-03-24;:2006-07-13:(50508006);(973)(2004CB418502):(1981～),,,.＊,E-mail:[e-mail]romaticHydrocarbonContainingWastewaterbyanAnaerobicFilterReactorUnderDenitrifyingConditionWANGWen-yan,QUANXiang-chun,YANGZhi-feng,HEMeng-chang(StateKeyJointLaboratoryofEnvironmentalSimulationandPollutionControl,SchoolofEnvironment,BeijingNormalUniversity,Beijing100875,China)Abstract:Withbenzene,naphthaleneandbiphenylasthemodelaromatichydrocarbon,thetreatmentofaromatichydrocarboncontainingwastewaterbyananaerobicfilter(AF)reactoroperatedincontinuousmodeandunderdenitrifyingconditionwereconducted.Withglucoseasthesupplementedcarbon,theinfluenceofCNratioonthedegradationoforganiccompoundswasalsoinvestigated.ResultsshowedthattheAFreactorcoulddegradethesearomatichydrocarbonseffectivelyunderabovementionedconditions.WhentheinfluentCODconcentrationwas1000mgL,andbenzene,naphthaleneandbiphenylconcentrationwas60mgL,theremovalefficiencyforCODandaromatichydrocarbonswas90%and84%,respectively.Benzenewasmoreeasilydegradedthannaphthaleneandbiphenylunderdenitrifyingcondition.WhenCNwasintherange5～30,benzeneremovalpercentagewasalwaysatabout90%,andCNratiodidnothaveobviouseffectonthedegradationofbenzene.ThedegradationofnaphthaleneandbiphenylandtotalCODwasgreatlyinfluencedbyCN.WhenCNwas15,thehighestremovalpercentagewasachievedanditwas90%,78%and82%forCOD,naphthaleneandbiphenyl,respectively.Keywords:denitrify;AFreactor;degradation;benzene;naphthalene;biphenyl　　,、,,,,,[1～3].,,(PAHs),、、、,CO2[4～7].,,,.,、.(AF),,.1　1.1　(AF),1.,4.5L,90mm,1000mm.5～10mm,800mm.2,,,.28320073　　　　　　ENVIRONMENTALSCIENCEVol.28,No.3Mar.,2007DOI:10.13227/j.hjkx.2007.03.0171　AFFig.1　StructureoftheAFreactor　AF2.,,,,30℃.,.24h.1.　2.　3.　4.　5.6.　7.　8.　9.　10.11.　12.2　AFFig.2　SchematicdiagramofthesetupoftheAFreactor　1.2　、、,1∶1∶1.,,,C∶N∶P=200∶5∶1NH4Cl、KH2PO4,pH7.0～7.4.,VSS5.2gL,VSSMLSS0.4.1.3　(1)　,,NaNO3.,,,3.(2)CN　,,NaNO3,CODNO-3-NCN,,COD、.(3)　,,COD、、NO-3、NO-2,.1.4　、、Waters1525,8μL,∶=87∶13,1mLmin,,254nm.NO-3-NNO-2-NN-(1-)-;COD;MLSS.2　2.1　AFAF,230d.,,,1000mg(L·d).COD3、4.,、,COD50%,,,1d.,COD5413:AF　　　　　　3　AFCODFig.3　RemovalofCODatvariousaromaticsorganicloadingsbytheAFreactorunderanaerobicdenitrifyingcondition　4　AFFig.4　DegradationofaromatichydrocarbonunderdenitrifyingconditionbytheAFreactoroperatedincontinuousmode,91%.44d,、,20mgL,COD,79%,,COD,,3,93%,0.5mgL,,3.76d,60mgL,COD,,.98d,100mgL,COD400mgL,60%,,.117d,60mgL,,COD100mgL,90%,,2mgL;,,,4mgL.,,NO-35.1～140d,NO-3-N30mgL,NO-3,NO-3NO-2.141d,NO-3-N,542　　　　　　28　　　　5　AFNO-3Fig.5　RemovalofNO-3bytheAFreactorunderanaerobicdenitrifyingcondition　CN.NO-3-N50mgL,CN20,NO-3,NO-3,NO-2,.NO-3,CN,NO-3,NO-2.CN15,AF,.2.2　,、.1,,.COD3,6.6,CN10～20,COD80%,CN15,,90%.3.,,CN,CN5～30,90%.CN,.CN15,,82%78%.,,;CN10CN20,55%.6CN15.CN.CN,6　CNFig.6　EffectofCNonthedegradationoforganiccompounds　,,.CN,、,,.Jiunn[10],CN.,(92%～97%)CN(、、).,(97%～100%)CN.[7]USB,CN15,.Khursheed[3],CN,,,,,;CN,,,5433:AFCN.,,,CN;,2CN.2.3　CN15,,,78.7　AFFig.7　ChangesoftheorganiccompoundsalongtheheightofAFreactor8　AFNO-3NO-2Fig.8　ChangeofNO-3andNO-2concentrationalongtheheightofAFreactor　　　7,,,,.50cm,COD,3;50cm,、、75%、79%、83%,COD37%.70cm,COD,,77%COD.,,,,,,,COD.8NO-3,,NO-3,NO-2.50cm,NO-3NO-2,NO-2,NO-2,70cm,NO-2.3　　　(1)AF,,COD1000mgL,、60mgL,COD90%,83%.(2),.(3)CN5～30,90%,CN;COD、CN,CN15,COD、,90%、78%82%.:[1],.[J].,2001,21(1):42～46.[2],,,.[J].,2004,24(5):323～326.[3]KhursheedK,GuptaSK.Continuousbiotransformationandremovalofnitrophenolsunderdenitrifyingcondition[J].WaterResearch,2003,37:2953～2959.[4]KarlJR,StuartES.Anaerobicbiodegradationofnaphthalene,phenanthrene,andbiphenylbyadenitrifyingenrichmentculture[J].WaterResearch,2001,35(1):291～299.[5]KarlJR,JoanneCCS,RobertAS,etal.Anaerobicnaphthalenedegradationbymicrobialpureculturesundernitrate-reducingcondition[J].AppliedandEnvironmentalMicrobiology,2000,66(4):1595～1601.[6]RobertoA,LauraP,JoseLM,etal.AnaerobicPAHdegradationinsoilbyamixedbacterialconsortiumunderdenitrifyingcondition[J].Chemosphere,2005,60:1231～1236.[7],,.[J].,2005,31(3):51～54.[8],.USB[J].,2004,5(8):72～75.[9].[M].:,1997.188～189.[10]JiunnJH,JuS.InfluencesofcarbonsourceandCNratioonnitratenitritedenitrificationandcarbonbreakthrough[J].BioresourceTechnology,1995,54:45～51.544　　　　　　28