地下水污染曝气修复技术进展

266201011WATERRESOURCESPROTECTIONVol.26No.6Nov.2010DOI:10.3969/j.issn.10046933.2010.06.019:863(2007AA06Z343);:(1984!),,,,Email:[e-mail]:(1962!),Email:[e-mail]1,1,2,3,1,1(1.,130026;2.CardiffUniversity,SchoolofEarthSciences,CardiffCF103YE,UK;3.,130026):从曝气流型和组分反应传质两方面总结了地下水污染曝气修复技术的研究进展,提出已有研究在地下水流及土壤介质特性与曝气流型相互影响脉冲曝气机理曝气抽提技术联用研究生物降解作用等方面存在的问题,并探讨该技术未来可能的研究方向,指出该技术在技术改良工程优化设计及机理研究三方面存在深入研究的空间,为进一步研究和应用推广提供参考依据:曝气修复;曝气流型;组分反应传质;地下水污染:P641:A:10046933(2010)06008405ProgressinairspargingforgroundwaterremediationtechniqueFANWei1,YANGYuesuo1,2,CHENLi3,CAOYuqing1,YANGMingxing1(1.CollegeofEnvironmentandResources,JilinUniversity,Changchun130026,China;2.SchoolofEarthandOceanSciences,CardiffUniversity,CardiffCF103YE,UK;3.JilinGeoEnvironmentMonitoringCentralStation,Changchun130026,China)Abstract:Astateofartofstudyonairsparging(AS)forinsitugroundwaterremediationissummarizedbasedonanalysisoftheairflowpatternandmasstransfer.Theexistingproblemsinthecurrentstudyarepresented,includinginteractionsamonggroundwaterflow,soilmedia,andairflowpatterns,therationaleofthepulsedflowmode,andtheconjunctionwithsoilvaporextractionandbiodegradationinAS.Theprospectsofthistechniquearediscussedintermsoftechnologicimprovementandengineeringoftheoptimaldesignandmechanismstudy,whichcanprovideguidanceforfurtherstudyandapplications.Keywords:airsparging;airflowpattern;masstransfer;groundwaterpollution(airsparging,AS)[1]1985,,,[2],,,,[23]AS(soilvaporextraction,SVE),,SVE(1),[1,3]1(AS+SVE)∀84∀1AS2080,,AS,AS,,,,,,,[4]AS,AS:ASAS1.1AS,1.1.1运用不同手段监测曝气流动形式及分布:Ji[5]AS,,,:(bubblesflow),(channelsflow),4mm,,075mm,,2mm,Peterson[6],,Jid10=012018mmd021mm,(chamberflow),:Lundegar[7]X,,Ji[5],,,,,(preferentialflow)(bypassflow)(deadbranches):Suthersan[8]9:(SF6He)X1.1.2识别曝气流型的影响因素并分析其影响/:Ji[5]Reddy[9],,,,,;,,[10][11]AS10-10m2,,,10-11m2,,,[12],/:Suthersan[8],ASJi[5],,,,[12]:,,,,AS,,,[2,14]:,[12],,,;,,,1.1.3空气流型数学模型,[14]AS,,[4]DarcyBessel∀85∀AS,BIOVENT,ASMcCray[15](T2VOC),[16],1.2ASAS,AS,,;,,,[8,4],AS,[17],AS3:#:/,AS[1,4];∃:,,,Johnson[18],,10mg/L,%:()()AS:a.AS,AS,,,AS::#/,∃,/,,,,,,:(synergisticeffects),Reddy[9],,,,ASTekola[19],5,,,,()[11],ASb.,AS,AS,AS,[11]1AS2090[2]AS:(lumpedparametermodels)(multiphasefluidflowmodels)!!!(dualzonemodel)[20]:,,,,,,,(J),()(),(masstransferzone,MTZ),(bulkzone),,,,,22dualzonemodel∀86∀:(lumpedparametermodels)(multiphasefluidflowmodels)[21],2~3,,,,,,:VGCAt=QG(CinG-CG)+xA2(HCCW-CG)(1)VWCWt=QW(CinW-CoutW)-xA2(HCCW-CG)+A1(KMCM-CW)-VWCW(2)VMCMt=-A1(KMCM-CW)(3):VG;VW;VM();QG,QW;CG;CW,CM;HC();x,L/T;A2,L2;KM;,L/T;A1,L2;,T-1()[22],AS,,:ddt&V1MKdV1=&1FKnd1+&V1qKdV1(4):V1;1;MKK;FKK;qKK;n,,2AS,AS,AS,AS:a.()AS,,,,;,,,b.ASAS,,,,,,c.AS,(EPA)[1],,Kim[23]TCE,95%Elder[24]:10h/d,,,,d.AS/SVE,SVEASAS/SVEAS/SVEe.AS,:#AS[2527];∃[18,28],,,,,,Monod;%,,[11,18,2829],∋,CO2[1,29]∀87∀3,,,,,AS,:#∃,,;%,,AS,,,,:[1]USEPA.Howtoevaluatealternativecleanuptechnologiesforundergroundstoragetanksitesaguideforcorrectiveactionplanreviewers[R].Washington,DC:EPA,2004,(:1.[2]USArmyCorpsofEngineers.Engineeringanddesign!insituairsparging[R].Washington,DC:USArmyCorpsofEngineers,1997:12.[3]NFESC.AirSpargingGuidanceDocument[R].PortHueneme,California:NFESC,2001:12.[4].[D].:,2004:814.[5]JIW,DAHMANIA,,AHLFELDDP,etal.Laboratorystudyofairsparging:airflowvisualization[J].GroundWaterMonitoringandRemediation,1993,13:115126.[6]PETERSONJ,MURRAYK,TULUY,etal.Airflowgeometryinairspargingoffinegrainedsands[J].HydrogeologyJournal,2001,9(2):168176.[7]LUNDEGARPD,LABRECQUED.Airsparginginasandyaquifer(Florence,Oregon,USA:actualandapparentradiusofinfluence[J].JournalofContaminantHydrology,1995(19):127.[8]SUTHERSANSS.Insituairspargingremediationengineering:designconcepts[R].BocaRaton:CRCPressllc,1999.[9]REDDYKR,ADAMSJA.Systemeffectsonbenzeneremovalfromsaturatedsoilsandgroundwaterusingairsparging[J].JournalofEnvironmentalEngineering,1998(3):288299.[10],,,.[J].,2003(22):246251.[11].MTBE[D].:,2005:6469.[12],,,.:[J].,2007,14(6):214221.[13]NDREAL,PAULJC,RICHARDJL,etal.Airspargingdesignparadigm[R].BattelleMemorialInstitute:2002:1920.[14],,.[J].,2007(5):12771282.[15]McCRAYJE,FALTARW.Definingtheairspargingradiusofinfluenceforgroundwaterremediation[J].JournalofContaminantHydrology,1996,24(1):2552.[16]vanGENUCHTENR.Aclosedformequationforpredictingthehydraulicconductivityofunsaturatedsoils[J].SoilSciSocAmJ,1980,44:892898.[17]CLAYTONWS,BASSDH,RAMNM,etal.Insitusparging:masstransfermechanisms[J].Remediation,1996,6(4):1529.[18]JOHNSONPC.Assessmentofthecontributionsofvolatilizationandbiodegradationtoinsituairspargingperformance[J].EnvironmentScienceandTechnology,1998,32(2):276281.[19]TEKOLAL.RemediationofNAPLSingroundwaterusinginsituairsparging[D].Chicago:UniversityofIllinois,1998:152181.[20]BRAIDAWJ,ONGSK.Airspargingeffectiveness:laboratorycharacterizationofairchannelmasstransferzoneforVOCvolatilization[J].JournalofHazardousMaterials,2001,87(13):241258.[21]CHAOKP,ONGSK.Watertoairmasstransferofvocs:laboratoryscaleairspargingsystem[J].JournalofEnvironmentalEngineering,1998,124(11):10541060.[22]MCCRAYJE.Mathemati