Fenton处理较长填埋龄垃圾渗滤液的作用机制研究刘智萍

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StudyonthemechanismsofthetreatmentofmatureleachatebyFentonprocessLiuZhiping1,GuoJinsong1,FangFang1,JiangPeiyan2(1.KeyLaboratoryofThreeGorgesReservoirRegion’sEco-Environment,MinistryofEducation,ChongqingUniversity,Chongqing400045,China;2.InstituteofArchitectureandDesign,ChongqingUniversity,Chongqing400045,China)Fenton1,1,1,2(1.,400045;2.,400045)[]Fenton。,FentonpH=4、n(H2O2)∶n(Fe2+)=10Fe2+0.08mol/L。,,a4.6。[]Fenton;;;[]X703.1[]B[]1005-829X(2010)04-0029-04Abstract:Fentonprocesshasbeenusedfortreatinglandfillleachatewhichwaslandfilledforarelativelylongtime.Theresultsshowthatthebestconditionsfortreatingthelandfillleachateareasfollows:pH=4,n(H2O2)∶n(Fe2+)=10anddosageofFe2+is0.08mol/L.Andtherelativelyaverageratioaoftheorganismsremovedbyoxidationandcoagu-lationis4.6.Keywords:Fentonprocess;leachate;oxidation;coagulation,BOD5/COD,、,,。,。,Fenton,,Fenton〔1-3〕。YangDeng〔4〕,Fenton,[](308020)[](1983—),。:13120810713,E-mail:bookegg@163.com。:,E-mail:lwsds@163.com。[]2009-12-02()30420104IndustrialWaterTreatmentVol.30No.4Apr.,2010!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2002,2(5/6):201-207.[5]Gijbertsen-AbrahamseAJ,SchimidtW,ChorusI,etal.Removalofcyanotoxinsbyultrafiltrationandnanofiltration[J].JournalofMembraneScience,2006,276(1/2):252-259.[6]NghiemLD,SchaferAI.Adsorptionandtransportoftracecon-taminantestroneinNF/ROmembrane[J].JournalofEnvironmen-talEngineeringandScience,2002,16(9):441-451.[7]ChulWJ,HeeJS,LimSK.Effectsofmembranematerialandpre-treatmentcoagulationonthemembranefouling:foulingmechanismandNOMremoval[J].Desalination,2006,197(1/2/3):154-164.[8],,,.[J].,2008(8):19-23.[9]ChuyangYT,ShiangFuQ,CriddleCS,etal.Effectofflux(transmembranepressure)andmembranepropertiesonfoulingandrejectionofreverseosmosisandnanofiltration[J].Environ-mentalScience&Technology,2007,41(6):2008-2014.29——2010-04,30(4),J.Yoon〔5〕。Y.W.Kang〔6-7〕,Fenton,。,Fenton。Fenton,,FentonpH、n(H2O2)∶n(Fe2+)Fe2+,Fenton,,。11.1,1。1,BOD5/COD0.2,NH3-N,,“”。,Fenton,FentonCOD3785mg/L,BOD5867mg/L,NH3-N747.5mg/L。1.298%pH,FeSO4·7H2O,30%H2O2,200r/min20min,1h,NaOHpH8.0,80r/min15min,,3h〔8〕。COD0FentonCOD,COD1COD,COD2COD,COD3COD,COD3=COD0-COD1,CODcoag=COD2-COD1;CODoxid=COD3-CODcoag。a=CODoxid/CODcoag,〔4〕。1.3CODHACHDR/2010;NH3-N722;BOD5;pHHACHpH;FentonZR-6。22.1Fenton,Fenton:pH=4、n(H2O2)∶n(Fe2+)=10、Fe2+0.08mol/L。COD、BOD5NH3-N3785、867、747.5mg/L,Fenton,COD、BOD5NH3-N1320、746、654.0mg/L,BOD5/COD0.20.56。2.2pHn(H2O2)∶n(Fe2+)=10,Fe2+0.08mol/L,FentonpHCOD。pHCOD1。Fenton〔9〕,,。1,pH<4,CODpH,pH=4,COD62.2%,pH>4,CODpH。CODCOD,54.3%。pH,Fe(H2O)2+,H2O2,·OH〔10〕;,pH,H+·OH;pH,·OH,Fenton;pH,H+,H2O2·OH;pH>5,H2O2,Fe2+Fe(OH)3,Fe2+〔11〕。CODpH,10%。pHFenton2。1pHCOD1COD/(mg·L-1)BOD5/(mg·L-1)NH3-N/(mg·L-1)pH4230~5780861~12312340~27608.1~8.7456093325808.430——2010-04,30(4)2,CODCOD,pHa8.44.6,,,pH。2.3n(H2O2)∶n(Fe2+)Fe2+0.08mol/L,pH4,n(H2O2)∶n(Fe2+),CODCOD3。3,H2O2,COD,。n(H2O2)∶n(Fe2+)=10,COD68.4%。COD,CODn(H2O2)∶n(Fe2+)=10,57.1%。n(H2O2)∶n(Fe2+),H2O2,·OH,。n(H2O2)∶n(Fe2+),H2O2,·OH,COD。n(H2O2)∶n(Fe2+),H2O2,H2O2·OH,HO2·,,n(H2O2)∶n(Fe2+)。,H2O2,O2Fenton,。3,CODn(H2O2)∶n(Fe2+),COD17.0%10.8%,〔7〕。n(H2O2)∶n(Fe2+)4。4,CODCOD,n(H2O2)∶n(Fe2+)a,n(H2O2)∶n(Fe2+),。E.Neyens〔12〕H2O2Fenton。,Fenton,,〔5〕。2.4Fe2+n(H2O2)∶n(Fe2+)=10、pH=4,FeSO4·7H2OFentonCOD。Fe2+COD5。H.Zhang〔13〕,,Fenton。,n(H2O2)∶n(Fe2+),Fe2+Fenton。5,Fe2+<0.08mol/L,Fe2+,COD,;Fe2+>0.08mol/L,COD,;Fe2+0.08mol/L,COD66.8%,COD54.2%。COD,10%~14%。Fe2+Fenton,3n(H2O2)∶n(Fe2+)COD2apH,:Fentonn(H2O2)∶n(Fe2+)a31——2010-04,30(4)[](1973—),1996,。:13368111979,023-65120768,E-mail:liulqs@163.com。[]2009-11-19()Fe2+H2O2〔11〕。Fe2+,Fe2+,Fe2+·OH,·OH,COD。B.Calli〔14〕。H2O2Fe2+,·OH,,Fenton,Fe2+。Fe2+6。6,a4.0,、,Fe2+。Fe2+,Fe(OH)3,,YangDeng〔4〕。COD。3(1)pH=4、n(H2O2)∶n(Fe2+)=10Fe2+0.08mol/L,FentonCOD65.4%,NH3-N12.9%,BOD14.0%;,,BOD5/COD0.20.56。(2)Fenton,。COD50%;pHFe2+,n(H2O2)∶n(Fe2+)。(3)Fenton,COD20%;pHFe2+,n(H2O2)∶n(Fe2+)。[][1]RivasFJ,BeltránFJ,FradesJ,etal.Oxidationofp-hydroxybenzoicacidbyFenton’sreagent[J].WaterRes.,2001,35(2):387-396.[2]ZhuWanpeng,YangZhihua,WangLi.Applicationofferroushy-drogenperoxidefortreatmentofDSD-acidmanufacturingprocesswastewater[J].WaterRes.,2001,35(8):2087-2091.[3]LopezA,PaganoM,VolpeA,etal.Fenton’spre-treatmentofmaturelandfillleachate[J].Chemosphere,2004,54(7):1005-1010.[4]DengYang.PhysicalandoxidativeremovaloforganicsduringFentontreatmentofmaturemunicipallandfillleachate[J].JournalofHazardousMaterials.2007,146(1/2):334-340.[5]YoonJ,ChoS,ChoY,etal.ThecharacteristicsofcoagulationofFentonreactionintheremovaloflandfillleachateorganics[J].WaterSci.Technol.,1988,38(2):209-214.[6]KangYW,HwangKY.EffectsofreactionconditionsontheoxidationefficiencyintheFentonprocess[J].WaterRes.,2000,34(10):2786-2790.[7],,,.Fenton[J].,2008,21(4):20-24.[8]KurniawanTA,LoW,ChanGYS.Radicals-catalyzedoxidationreactionsfordegradationofrecalcitrantcompoundsfromlandfillleachate[J].ChemicalEngineeringJournal,2006,125(1):35-57.[9]DengYang,EnglehardtJD.TreatmentoflandfillleachatebytheFentonprocess[J].WaterRes.,2006,40(20):3683-3694.[10]GallardH,deLaatJ,LegubeB.EffectofpHontheoxidationrateoforganiccompoundsbyFe-/H2O2,mechanismsands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