当前位置:首页 > 行业资料 > 其它行业文档 > 硕士论文-生活垃圾内嵌PRB生物反应器原位削减渗滤液污染物过
上海交通大学硕士学位论文生活垃圾内嵌PRB生物反应器原位削减渗滤液污染物过程研究姓名:奉均衡申请学位级别:硕士专业:环境工程指导教师:朱南文20090101IPRBPRBPRBPRBPRBPRBPRBPRBR1CODR220-50%14-43%33-75%0.15-1.83%PRBR1CrCuMnNiZnR2PRBPRBIIPRBPRB1R4PRB1+PRB2R327CODTNNH4+-NTPR3105465mg/L277.65mg/L113.64mg/L2.36mg/LR4106258mg/L280.17mg/L46.52mg/L5.96mg/LPRBPRB2PRB1PRB2PRB1CODTNNH4+-NTPR4R3PRB1AR4221R4R3PRB1PRB2PRB1PRBPRBABSTRACTIIIINSITEACCELERATEDELIMINATIONOFCONTAMINANTSINLANDFILLLEACHATEBYEMBEDEDPRBBIOREACTORABSTRACTLandfillisthepredominatedtreatmenttechnologyofMunicipalSolidWaste(MSW)inChina,andleachateisthecriticalproblemforlandfillpollutioncontrolduetothehighloadingoforganicmatterandothertoxicsubstances.Thereleaseofindeterminatevolumesofleachatewouldintroducetheriskstopublichealthandthesurroundingenvironment,andthustheonsitereductionofcontaminantsinleachateisoneofthepotentialresolutionsforlandfill.Inthiswork,anewtypeoflandfill,namelyembeddedPRBbioreactor,wasdeveloped,makinguseofthePermeableReactiveBarrier(PRB)andBioreactorLandfill(BL)cooperationtogether.PRBcouldremovesomepersistentorganicpollutant,andbioreactorlandfillcouldaccerelatethebiologicaldegradationprocessofleachateinlandfillbyrecirculation.ThejointedeffectofPRBandBLcouldacceleratetheeliminationofcontamiantsinleachate.LeachatecharacteristicsfromtheembeddedPRBbioreactorandthereferencesofconventionallandfillwerecompared.Meanwhile,thefunctionofPRBincontaminantremovalonsitewasalsoanalysisbycomparingthedifferentmaterialsandstructureofPRB.Themainresultsshowasfollows:(1)TheembeddedPRBbioreactorlandfill(R1)wouldbemoreeffectiveforthecontaminantremovalinleachate,comparingtotheconventionallandfill(R2),andtheleachateinR1occupiedabout20-50%,14-43%,33-75%,0.15-1.83%thatofR2inentireperiods,intermsofCODCr,TN,NH4+-NandTP,respectively.Meanwhile,thequantityofleachateandthesettlementinR1weremorethanthatofR2,meaningthatmicrobialdegradationinR1wasmoreactivitythanthatinR2.Thecorrespondingheavymetalconcentration,suchasCrCuMnNiZn,inR1werealsolowerthanABSTRACTIVthatinR2,suggestingthatthefillingmaterialsinPRB,i.e.scrapiron,cementandquicklime,playedanimportantroleintheremovalofheavymetalsinleachate.(2)ThecharacteristicsofleachatefromR3(PRB1+PRB2)andR4(doublelayersPRB1)werecompared,andthefunctionofPRBmaterialsandstructurewereanalysis.ItwasshownthatPRB2wouldcontributetoremovetheleachateintheinitialstagebyphysical-chemicaladsorption,whilePRB1wouldbeenhancedthemicrobialactivityinleachatecontaminantremovalforalong-termperiods,basedontheexperiomentsof27weeks.(3)CumulativeemissionsofCOD,TN,NH4+-N,TPinleachateandcumulativeMSWsettlementsofR4weremorethanthatofR3,meaningthathydrophilicorganicpolymerAinPRB1isagoodbiologicalcarrier,whichcouldimprovemicrobialactivitybyenrichingthenumberofmicroorganisms,thuscontributingtomicrobialrapiddegradationofMSW.(4)ThroughvariationofTNconcentrationinleachatewithtime,itwasfoundthatTNconcentrationinleachateofR4waslowerthanthatofR3after221days’experiment,suggestingthatPRB1playedanimportantlong-termroleintheremovalofcontaminationsinleachate,whiletheroleofPRB2willberestrictedtoacertainextent.ResultsshowedthatembeddeddoublelayersPRB1bioreactorlandfill,bystrengtheningtheroleofmicroorganisms,couldremovethecontaminationsinleachateinsitu,butalsocanensuresustainableandstableoperationofbioreactor.Keywords:MSW,embeddedPRBbioreactorlandfill,landfill,leachateVIICODBODTOCBDMTNNH4+-NTPICPGC-MS-MSWMunicipalSolidWasteSLSanitaryLandfillPRBPermeableReactiveBarriersBLBioreactorLandfill112005820046614446865t79%87.7%2900t1515t/1t100t[1]2080PermeableReactiveBarriersPRBpHBODCODCrTOCPRBPRBPRB222.1PRBPRBPRBPRBPRBPRBPRB2.2PRBPRB3PRBPRBPRB1PRB2PRBPRBPRBPRBPRBPRB341-11-1Fig.1-1Technicalrouteofdissertation5PRBPRBPRBPRBPRBPRBPRB1+PRB2PRB1PRB41[1,2,3](Initialadjustmentphase)(Transitionphase)(Acidphase)(Methanefermentation)(Maturationphase)2-12-1Fig.2-1MSWstabilizationprocess-----CO2222111222xyzCHOxyzOxCOyHO⎛⎞++-→++⎜⎟⎝⎠522322xyzvstuCHONaHObOCHOeNHdHOfCO•+→++++N2H2SpHNH4+H2CO2CO2CODVFApH(5.0)H2CH4()3242n524n4nCHCOOHCHOCHnCO───→+++CODBOD5BOD5/CODCr0.4pH6.8-8.0CH450-60%CO2BOD5/CODCr=0.1pHCO2CH42-21-2-3-4-H2CO25-611223452-2Fig.2-2Anaerobicdegradationoforganics22.1[1]CODCrTOC(macrocomponents)CaMgNaKNH4+FeMnCl-SO42-HCO3-2-3SO42-Cl-ZnFeCdCrCuPbNiZnHgAs8()(XOCs)(1mg/L)(chlorinatedaliphatics)()72-3Fig.2-3ProfilesforevolutionofinorganicsconcentrationsinleachateNancyRagle[4]200%300%[5]2-12-2[6]2-1[7]Table2-1CompositionofMSWLandfillLeachateofdifferentages123BOD54460130001135910907COD11210200322183618533TSS199454917301044TDS11190141541318113029pH7.16.67.36.9CaCO35685562048305404CaCO35116498631354652Ca651894725818Mg65245425045381232.82.63.02.719667248831001TKN1660760611984114683428462Cl-4816439531014240Na1177138614571354K969950968961Cd0.040.090.100.09Cr0.160.430.220.28Co0.440.390.320.39Fe245378176312Ni0.531.981.271.55Pb0.520.810.450.67Zn8.7311121Hg0.0070.0050.0110.007pHmg/L2-2[8]Table2-2CompositionofMSWLeachateofdifferentdegradationphasesBODmg/L100-100001000-57000600-34004-120CODmg/L480-180001500-71000580-976031-900TVAmg/L100-30003000-18800250-40000BOD/COD-0.23-0.870.4-0
本文标题:硕士论文-生活垃圾内嵌PRB生物反应器原位削减渗滤液污染物过
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