滑动弧等离子体降解印染废水的影响研究刘亚纳

331*1231.4710032.4500023.31002710kVO20.4m3/h20mL/min3.5mm。pHCO32-HCO3-、CO32-COD20min76.42%64.36%pHCO32-H2CO3CO2COD20min92%。pHHCO3-CO32-。pH=3CODTOClnCOD0/COD=0.13090tlnTOC0/TOC=0.06395t。。CO32-X703Adoi10.3969/j.issn.1003-6504.2010.07.0321003-6504(2010)07-0146-04DegradationofDyeingWastewaterbyGas-liquidGlidingArcDischargeLIUYa-na1*SIAn-heng1TIANHui2YANJian-hua31.SchoolofChemicalEngineeringandPharmaceuticalMakingHenanUniversityofScienceandTechnologyLuoyang471003China2.SchoolofMechanicalandElectricalEngineeringHenanAgriculturalUniversityZhengzhou450002China3.InstituteforThermalPowerEngineeringZhejiangUniversityHangzhou310027ChinaAbstractUndertheconditionofappliedvoltage10kVO2ascarriergasgasflowratefixedat0.4m3/hwastewaterflowrate20mL/minshortestelectrodedistance3.5mmdyeingwastewaterwasdegradedbygas-liquidglidingarcdischarge.ExperimentalresultsshowedthatpHofdyeingwastewaterwasalkalineandsubalkalicHCO3-andCO32-formedinsolutionmainlyresultingindecreasingCODremovalrate.WhenpHwasstrongacidicH2CO3andCO2existedinthesolutionandtheremovalrateofCODdidnothaveanimpact.HCO3-andCO32-reactedwithhydroxylradicalgeneratedbyplasmadischarge.WithoutregardtotheeffectofCO32-whenpHwas3degradationkineticsofCODandTOCwere0.13090tand0.06395tseparatelyandresultsshowedthatthekineticsofdegradationfollowedthefirstorderlaw.UltravioletvisibleUV-VisspectrumandinfraredspectroscopyFTIRofdyeingwastewatershowedthatchromophoregroupwasdamagedsolutionwasdecolorizedandthereductionordisappearanceofabsorptionpeaksindicatedthearomaticringofwastewaterwasdegraded.KeywordsdyeingwastewaterglidingarcplasmadegradationrateCO32-[1-3]。、、、。。、、。。1990CzernichowskiA[4-5]。·OHH2O2O3OH。[6-8]。pHCOD。[e-mail]*。EnvironmentalScience&Technology33720107Vol.33No.7July2010711.1、、。。。1。1.2[9-10]、、、、、。。。。1.310kVO20.4m3/h20mL/min3.5mm5min525min。NaOHH2SO4pHPHB-4pH。TU1800。KBrFTIRNEXUS670ThermalNicolet。22.1COD1pH7.85pH311pHCOD1。pHCOD。pH=3COD0~10minCOD10min76.5%10min20minCOD92%COD1497mg/L120mg/L。pH=1120minCOD64.36%COD1497mg/L533.5mg/L。pH=7.850~15minpH=11。20minCOD76.42%COD1497mg/L352.99mg/L。2pHpH2pH。pH=3pH=11pHpH＝7.8510min、15min20minpH7.545.46、3.78pH、。COD3pHCOD20min。pHCOD。1pH7.85HCO3-。1Table1ThecontaminantsofdyeingwastewaterCODBODpHK+Na+Mg2+CO32-HCO3-1497.5431.67.8521.4375.523.870665.3NH4+Cl-SO42-NO3-NO2-PO43-4.425190.9220.610.8510230pHμs/cmmg/L。14733pH111HCO3-CO32-HCO3-CO32-3~5。CO32-。pH11CO32-COD0~20minpH8.48CO32-。pH7.85HCO3-CO32-HCO3-OH4.2×108L/mol·s1.5×107L/mol·sHCO3-OHCO32-pHHCO3-H2CO3pH=1120minpHpH10min7.5720min3.78COD。2pH=3CO32-CO2pHCO32-COD。HCO3-+OH-→CO32-+H2OpH=8.31HCO3-+H+→H2CO3→H2O+CO2↑pH=3.72CO32-+·OH→CO3-·+OH-3HCO3-+·OH→HCO3·+OH-4HCO3·→CO3-·+H+52pH。pH＝310min。2.2CO32-HCO3-pH3。3pH=3TOC、CODTOC25minTOC81.3%COD96.5%。3pH=3TOC、CODlnCOD0/CODlnTOC0/TOCtR20.99。CODlnCOD0/COD=0.13090tk=0.13090R2=0.9918TOClnTOC0/TOC=0.06395tk=0.06395R2=0.9932CODTOC。2.30.45μm40min200~400nm550~600nm。210nm25minCOD52.5mg/L210nm。50min1139.55cm-11000cm-1C-H2pHTable2ColorchangesofdegradedsolutionatinitialpHpH(min)051015202532305563007.85230855539281511230100757065501487110[10]SeddonKRStarkAToresMJ.Influenceofchloridewaterandorganicsolventsonthephysicalpropertiesofionicliquids[J].PureAppliedChemical2000722275-2287.[11]WangJJZhuALZhaoY.Excessmolarvolumesandexcesslogarithmviscositiesforbinarymixturesoftheionicliquid1-butyl-3-methylimidazoliumhexaflurophosphatewithsomeorganiccompounds[J].JournalofSolutionChem－ical200534585-596[12].-[J].20093772-76.WangLiangYanYong-shengLiHua-mingetal.Ionicliquidsolventsublation-spectrophotometricdeterminationoftracetetracyclinesantibioticinwater[J].ChineseJournalofChemistry20093772-76.inChinese。1266.89cm-1、1337.31cm-1、1457.75cm-1、1654.13cm-1、1598.83cm-1。51139.55cm-11266.89cm-1、1337.31cm-1、1457.75cm-1、1654.13cm-1、1598.83cm-11000cm-1。31pHCO32-HCO3-、CO32-CODpHCO32-H2CO3CO2COD。2CODTOC。3。[][1].Fenton[J].2008317116-119.inChineseLiuQiong-yuLiuLiCuiFei-fei.Effectofsolarphoto-Fen－tonpreoxidationonbiodegradabilityofphenolicwastewater[J].EnvironmentalScience&Technology2008317116-119.inChinese[2].ClO2K-2G2BLN[J].200120116-20.ZhaoMao-junXiangQinXieJia-li,etal.ClO2onreactiveredK-2GandDisperseBluedyedecoloration2BLN[J].SichuanEnvironment200120116-20.inChinese[3].X-3B[J].2002222181-184.MaoLi-qunYangJian-junGuoQuan-huietal.StudiesonphotochemicalandphotocatalyticsynergisticdecolorationofBrilliantRedX-3Bsolution[J].ChineseJournalofCatalysis2002222181-184.inChinese[4]LesueurHCzernichowskiA.DeviceforGeneratingLow-TemperaturePlasmasbyFormationofSlidingElectricDischarges[P].PatentFR26391721990.[5]CzernichowskiA.Glidingarcapplicationstoengineeringandenvironmentcontrol[J].PureApplChem19946661301-1310.[6]AAJoshiBRLockePArceetal.Formationofhydroxylradicalshydrogenperoxideandaqueouselectronsbypulsecoronadischargeinaqueoussolution[J].JHazardMater1995413-30.[7]MorasFAbdelmalekF.OxidationofOrganicSolutesinAqueousMediumbyaGlidingArcDischargeinanOxygenContainingGas[C].Proof14thInt.SymponPlasmaChemistryPragueCzechRepublic1999:2709-2714.[8]BenstaaliBBoubertPCheronBG.