UVH2O2工艺对饮用水中DMP的去除效果和影响因素赵丹丹

25　42006　　7　　　ENVIRONMENTALCHEMISTRYVo.l25,No.4July　　2006　200585.　*863(2002AA601130),(2003BA808A17).　**:021-65982691,E-mial:[e-mail]-H2O2DMP*赵丹丹1　高乃云1**　芮　1　徐　斌1　赵建夫1　乐林生2(1　,,200092;2　,,200086)　　UV-H2O2(DMP),,UVH2O2DMP;UV-H2O2DMP.DMP5.1496×10-3mmoll-1(1.0mgl-1),UV133.9μWcm-2,H2O220mgl-160min,DMP97.8%.,H2O2、pH、DMPTOCDMP.　,,UV,.　　(DMP),,,,,.　　[1,2].UV-H2O2,,[3,4].　　UV-H2O2(DMP),DMP.1　1.1　　　,10,,140L,30W,253.7nm,100rmin-1.,.(UV254=0.114,TOC=5.0—6.0,28—30℃).1.2　　　,H2O2,H2O2、UVUV-H2O2DMP.DMP,,,DMP(LC-2010AHT);shim-packVP-ODS(150mm×4.6mmi.d.).2　2.1　UVH2O2DMP　　DMP,UV133.9μWcm-2,DMP0.3,0.6,1.01.5mgl-1,DMPUV.,,DMP(CDMP).DMP1.0mgl-1,90min10.84%.,DMP.,UVDMP.478　　　　　　　　25　　DMPH2O2,DMP1mgl-1,H2O2100mgl-1,DMP,H2O2DMP.2.2　UV-H2O2DMP　　DMP1.0mgl-1,H2O240mgl-1,UV,UV21.2,50.1,77.2,107.6133.9μWcm-2,DMPUV,1.　　1,H2O2,DMP,DMP:lnC=lnC0-kt　　,DMPlnC-t1,lnCt,,DMP.　　,UV,DMPk.,:k=0.0006[UV]+0.0059,0.9970.2.3　H2O2DMP　　UV-H2O2,H2O2,,H2O2,,H2O2DMP.1.0mgl-1DMP,UV133.9μWcm-2,H2O2.DMP2.　　2,H2O2,DMP,DMPUVH2O2.H2O2,60min,DMP38.4%,63.1%,85.1%,92.6%98.6%.,,H2O2,DMP.kH2O2,k=0.002[H2O2]+0.006,0.9781.,H2O2[5],,H2O2,.2.4　DMP　　0.3,0.8,2.7,4.28.0mgl-1DMP,.H2O240mgl-1,UV133.9μWcm-2.DMPUV3.　　3,DMP,DMP,DMP.DMP0.3mgl-18.0mgl-1,0.1031min-1　4:UV-H2O2DMP479　　0.0310min-1.kDMP:k=0.0741[C0]-2.5009,0.9800.,,k,.2　H2O2DMPFig.2　VariationsofDMPconcentrationwithcontacttimeunderdifferentH2O2dosage3　DMPDMPFig.3　VariationsofDMPconcentrationwithcontacttimeunderdifferentinitialDMPconcentration2.5　pHDMP　　H2O220mgl-1,UV133.9μWcm-2,DMP1.0mgl-1,pH2.51,4.72,6.83,8.5311.08,4.　　pH,k=0.3582-1.5685ln[pH]+3.4780[pH]-1,0.9810.UV/H2O2,.,H2O2,H2O2.pHH2O2,H2O2,.,DMPpH,DMP.2.6　DMP　　DMP,,TOCDMP,H2O220mgl-1,UV107.6μWcm-2,30℃,DMP1.0mgl-1.5.4　pHDMPFig.4　VariationsofDMPconcentrationwithcontacttimeunderdifferentintialpHvalues5　TOCDMPFig.5　VariationsofDMPconcentrationwithcontacttimeunderdifferentTOCvalues　　5,,DMP.480　　　　　　　　25,,.TOC,,k=0.1699[TOC]-1.1090,0.9839.,TOC,DMP,,DMP.3　　　(1)UVDMP,H2O2DMP,UV-H2O2DMP,DMP5.1496×10-3mmoll-1,UV133.9μWcm-2,H2O220mgl-1,40min,DMP97.8%.　　(2)DMPUV、H2O2、DMP、pHTOC.H2O2,UV,DMP,k=0.0006[UV]+0.0059.,H2O2,DMP.DMP,DMP,k=0.002[H2O2]+0.006.DMPpH,DMP.DMP,TOC3mgl-1.,DMP,.　　　[1]　OrlandoMAlfano,RodolfoJBrandi,AlbertoECassano,DegradationKineticsof2,4-DinWaterEmployingHydrogenPeroxideandUVRadiation[J].ChemicalEngineeringJournal,2001,82∶209—218[2]　,,,[J].,2002,21(5)∶500—504[3]　,,,[M].:,2002,7—9[4]　,,[M].:,2001,202—224[5]　SunY,PignatelloJJ,PhotochemicalReactionInvolvedintheTotalMineralizationof2,4-DbyFe3+/H2O2/UV[J].Environ.Sci.Technol.,1993,27(2)∶304—310DEGRADATIONOFDMPBYCOMBINATIONOFUV-H2O2ANDIMPACTFACTORSZHAODan-dan1　　GAONai-yun1　　RUIMin1　　XUBin1　　ZHAOJian-fu1　　LELin-sheng2(1　StateKeyLaboratoryofPollutionControlandResourceReuse,TongjiUniversity,Shanghai,200092,China;2　ShanghaiMunicipalWaterworksShibeiCo.Ltd,Shanghai,200086,China)ABSTRACT　　Theremovalperformancesofdimethylphthalate(DMP)indrinkingwaterusingUV-H2O2combinatedprocesswasintroducedinthispaper.Theresultsshowedthat,theDMPcouldnotbeeffectivelyremovedbyUVradiationorH2O2oxidationalone,whileUV-H2O2processcouldachievequitegoodremovalefficiency.AstheinitialconcentrationofDMPabout5.1496×10-3mmoll-1(1.0mgl-1),itsremovalefficiencyreached97.8%undertheconditionthattheintensityofUVradiation,thedosageofH2O2,reactiontimeandpHvaluewere133.9μWcm-2,20mgl-1,60minutes,and6.83,respectively.ThekineticeffectsoftheintensityofUVradiation,H2O2dosage,pHvalues,DMPinitialconcentrationandTOCvaluesontheconver-sionofDMPwereexaminedrespectively.AnalysisoffactorsshowedthatH2O2dosage,pHvalue,DMPini-tialconcentrationandTOCvaluehaveimportanteffectontheadsorptionofDMP.　　Keywords:drinkingwater,dimethylphthalate,UVradiation,advancedoxidation.