催化臭氧氧化去除垃圾渗滤液中难降解有机物的研究

26120071ENVIRONMENTALCHEMISTRYVo.l26,No.1January2007(2006810).刘卫华季民张昕杨洁(,,300072)Fe(),Mn(),Cu(),.pH.,,UV254,TOCCODCr;,TOCCODCr,.Fe2+UV254.,.Cu()Mn()Fe().Cu(),CODCr,UV254.,,,,.,,,[1].,,.,.Mn(),Fe(),Cu(),,,.111O3.O3.14L,15,,,,O3032Lmin-1,1676mgl-1..,85%,12%.20%65%.12[2,3]:,,045m,(TOC1)01moll-1HClpH=2,AmberhiteXAD8(35mlmin-1),(TOC2),.01moll-1NaOHXAD8(35mlmin-1),01moll-1HClpH=2,24h,(3000rmin-115min),(TOC3),(TOC1TOC2TOC3).O3;pHHANNAHI19321;HANNAC200;UV254TU1800/;TOCTOCVCPH;CODCr.1:59221Fe()1,Fe2+(03mgl-1),Fe2+O3OH,,O2(FeO)2+,(FeO)2+,OH[4].,OH(FeO)2+.Fe2+,,Fe2+06mgl-1,TOC602%.Fe2+,TOC,.,Fe2+UV254,Fe2+24mgl-1,UV254.,Fe2+24mgl-1,.Fe2+,Fe2+OH(FeO)2+,Fe3+.1Fe()TOC,UV254Fig1EffectofFe()oncatalyzedozonationofTOC,UV254andchroma22Mn()2,Mn()(03mgl-1),Mn()06mgl-1,,TOC698%,Mn()24mgl-1,TOC,.Fe(),Mn()UV254,Mn()UV254.[4],Mn()O3,Mn4+OH-,OH-O3MnO2OH.2Mn()TOC,UV254Fig2EffectofMn()oncatalyzedozonationofTOC,UV254andchroma23Cu()3Cu(),3:Cu()6026,,Cu()06mgl-1,TOC70%,765%,Fe()Mn(),Cu()UV254.Fe()Mn().Cu(),,,.,Cu()06mgl-1.3Cu()TOC,UV254Fig3EffectofCu()oncatalyzedozonationofTOC,UV254andchroma24pH06mgl-160min,pH30,50,70,90110.,Fe(),Mn(),Cu(),pH,.:(1)pH,,;(2)pH,,,.,pH89.25Cu()Cu()06mgl-1,4,COD30510mgl-1,,,,Cu()COD.CODCu(),5.1:615,30min,COD,COD;30min,,.,COD,120min,Cu()COD30510mgl-1,7647mgl-13638mgl-1567%,582%621%,COD13202mgl-1,3195mgl-11378mgl-1.,COD,,,60min,.3(1),TOCCODCr,UV254;,TOCCODCr,.Fe2+UV254.(2)pH,..(3)Cu()Mn()Fe().Cu(),CODUV.[1]KiHoonKang,HyunSangShin,HeekyungPark,CharacterizationofHumicSubstancesPresentinLandfillLeachateswithDifferentLandfillAgesanditsImplicationsWaterResearch,2002,36(16)40234032[2]ThurmanEM,MalcolmRL,PreparativeIsolationofAquaticHumicSubstancesEnvironmentalScicenceTechnology,1981,15(4)463466[3]MalcolmRL,MacCarthyP,QuantitativeEvaluationofXAD8andXAD4ResinsUsedinTandemforRemovingOrganicSolutesfromWater[J].EnvironInternational,1992,18(6)597607[4]RivasJ,HomogeneousCatalyzedOzonationofSimazine:EffectofMn()andFe()[J]JournalofEnvironmentalScienceandHealthPartBPesticides,FoodContaminants,andAgriculturalWastes,2001,36(3)317330THECATALYTICOZONATIONOFREFRACTORYORGANICSINLANDFILLLEACHATELIUWeihuaJIMinZHANGXinYANGJie(DepartmentofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin,300072,China)ABSTRACTApplyingFe(),Mn()andCu()ionsforcatalyticozonationofhumicsubstance(HS)inlandfillleachatewerestudiedTheeffectsofinitialpHvaluesandcatalystdosageonHSremovalefficiencywerealsoanalyzedResultsshowedthathydrophobichumicsubstancewaspredominantintheeffluentoflandfillleachatetreatedbybiologicalprocessesandaccountedfor85percentofdissolvedorganicmatterTheresultofthisstudyalsoindicatedthatcatalyticozonationcouldbeeffectivetoremoveTOCandCODCrbutlesseffectivetoremoveUV254andchromacomparedwiththatachievedbyozonationaloneThebestefficiencyofcatalysiswasobtainedatamoderateconcentrationofthecatalyseandhighinitialpHvalueTheremovalrateofTOCandCODCrdecreasedwithexcessivecatalystAndtheremovalefficiencyofUV254andchromawasrestrainedobviouslywithexcessiveFe()concentrationCu()amongthecatalystshasthebestefficiency,andthenFe()andMn()werebetterTheresultssuggestedthatcatalyticozonationwiththepresenceofCu()ionswaseffectiveinremovingCODCr,chromaandUV254fromlandfillleachateKeywords:landfillleachate,organics,humicsubstance,catalyticozonation.