大型垃圾填埋场渗滤水氨氮衰减规律

:025322468(2001)20320323205:X705:A1,2,1,3,3,3(1.,200092;21;31):((30004)m3)10800t,315(12),NH32N,NH32N,,NH32N,,.:;;;;;Naturalreductionofammonia2Ninleachateoflarge2scalelandfillLIUJiangying1,XUDimin2,ZHAOYoucai1,HUANGRenhua3,ZHOUHaiyan3,ZHANGJun3(1.NationalLabora2toryofPollutionControlandResourceReuse,TongjiUniversity,Shanghai200092;2.ScientificResearchDepartment,TongjiUniversity;3.WasteTreatmentcorporation,ShanghaiEnvironmentalSanitationManagementBureau)Abstract:Alarge2scaletestinglandfill((30004)m3)wasfilledwith10800tonsofrefuse.TheAmmonia2Nconcentrationofleachatewasana2lysedeveryonetotwoweekslastingfor3.5years.AmathematicalmodelwasestablishedtosimulatetherelationshipoftheAmmonia2Nvalueandtime.ItwasfoundthatAmmonia2NValuewouldbereducedto25mgPLafter21years.Theresultindicatedthatit.Ifthecurrentlandfillingdesignandoperatingprocessesweremodified,fromdischargingleachatepromptlytodischargingleachateaftersometime,soastomakeAmmo2nia2Nconcentrationdecreasenaturallytosomelevel,themanpowerandmaterialcouldbeeconomizedgreatlyandtheoperatingprocessescouldbesimplified.Keywords:landfill;refuse;leachate;ammonia2N;naturalreduction;mathematicalmodel:2000204204;:2000209230:(:597780162977019);:(1970),,,,CODmgPL,BODmgPL,NH32NmgPL1,,..,.,.,[1](kgkg)[2](t),,.,(),CODBOD521320015ACTASCIENTIAECIRCUMSTANTIAEVol.21,No.3May,2001NH32NpH.((NH32N)).160km,,300hm2.4m,6000t8000t,.,50000m2,,46.,,23m.30cm,11510-5cmPs,,..1995410,1995425.10858126t,4m,3000m2.01905tPm3,1[3].1Table1Fundamentalcontentsofexperimentalrefuse,%(),%(),%(),%4311237167431781815515d,,12,19989.199810,(NH32N).:,.,,5,.2211(NH32N)1995519989,64,(NH32N)[4],1.1,500d,(NH32N),2500mgPL,4457198mgPL,.500d,19989457163mgPL.212(NH32N),,.,[5,6]:(NH32N)=0(NH32N)at(1):(NH32N)tNH32N,mgPL;0(NH32N)NH32NNH32N,mgPL;t(t423211(NH32N)Fig.1Compraisonbetweenmeasuredammonia2Nvalueofexperimentallandfillleachateandsimulatedvalue500d),d;a,d-1.,:0(NH32N),1,NH32N,0(NH32N)8241029;a,0(NH32N),(NH32N)2t,a01999.r=018886.:0(NH32N)=8241029019995t(t500d)(2)213(NH32N)2t(2),(NH32N)2t,,1.,(1),.,,.1,(NH32N).214(NH32N),19901991199219931994,(NH32N),(2),2.,1990199430%40%,40%45%,,t,,,,.2,8(1990),(NH32N)200mgPL,.,(NH32N)2t.2(NH32N)3Table2Comparisenbetweenpredictedammonia2Nvalueandtomeasuredammonia2NvalueinShanghaiLaoganglandfillleachateanderrorrateanalysist,a115210313510610710810(NH32N),mgPL636133583180461127348114293103246165207161(NH32N),mgPL621103383127457163437124284156206181180122,%21452100182510310191020103:313567819941993199219911990(NH32N)215(NH32N)2t(2)(NH32N)2t,2.(2),(1995,),,(NH32N)25mgPL,21.5233:2(NH32N)Fig.2Thesimulatedcurveaboutregularpatternof(NH32N)reduction3311(,500d),,,,,.,,.(t500d),NH32N[7],(NH32N),.,:,,,t500d().,(NH32N)CODBOD[8,9].(NH32N),,,,.,,.,;,,,(NH32N).,,,,,(3),(NH32N)(90%).(NH32N),(NH32N)25mgPL21.,(NH32N),70[10].(NH32N),:(1),20%40%,60%1,,,1(2),40%60%,20%;(3),,,(NH32N);,623.,198621,,[11].312.,,.1,.,(NH32N),,.,,.,,(23),(NH32N),,.,,,..,,(NH3-N),CODBOD,[8,9].4315,(NH32N),,(NH32N),(NH32N)2125mgPL.19901994,.,,,21.:[1],,.[J].(),1996,24(5):596600[2].[J].,1996,17(2):1823[3],,.[J].,1995,1:5254[4].()[M]1:.1989[5]RobinsonHD.Leachatecollection,treatmentanddisposal[J].WaterandEnvironmentalManagement,1992,6(3):321332[6]El2FadelM,FindikakisAN,LeckieJO.NumericalmodelingofgenerationandtransportosgasandheatinlandfillsI.modelformula2tion[J].WasteManagement&Research,1996,14:483504[7]LemaJM,MendezR,BlazuezR.Characteristicsoflandfillleachatesandalternativesfortheirtreatment:areview[J].Water,AirandSOILPollution,1988,40:223250[8].()[D].:11999[9],,.COD[J].(),2000,28(3):328332[10]StegmannR,EhrigHJ,Leachateproductionandquality2resultsoflandfillprocessesandoparation[A].StegmannR,Sardinia8922ndInternationalLandfillSymposium[C],Italy,Cagliari,1989,XXVIII:116[11],,,.[J].,2000,20(6):7367407233: