多次Fenton反应处理高浓度难降解工业废水的研究白翠萍

2018－03－29B201508813xjz06L。。doi10．3969/j．issn．2095－4565．2018．04．005Fenton12114350032435003FentonH2O2、H2O2∶Fe2+、pHFentonCOD。FentonH2O2∶Fe2+=10∶1H2O26mol/L6hpH=3。COD90．62%。FentonCOD4FentonCOD99．21%。FentonX703．1A2095－4565201804－0021－04StudyonTreatmentofHighConcentrationIndustryWastewaterbyFentonOxidationBaiCuiping12HuangYugang11SchoolofEnvironmentalScienceandEngineeringHubeiPolytechnicUniversityHuangshiHubei4350032HubeiKeyLaboratoryofMineEnvironmentalPollutionControlandＲemediationHubeiPolytechnicUniversityHuangshiHubei435003AbstractTheOxidativedegradationofhighconcentrationrefractoryindustrialwastewatertreatmentbyFentonreagentwasinvestigated．TheinfluencesofreactionconditionsonthedegradationefficiencywerediscussedsuchastheinfluencesofH2O2concentrationH2O2∶Fe2+molarratioinitialpHvalueandreactiontimetotheeffectofCODremovalbyusingFentonreagent．TheresultsshowedthattheoptimumconditionofFentonoxidationwereasfollowsmolarratioofH2O2andFe2+was10∶1thedosageofH2O2was6mol/LpH=3andreactiontimewas6h．UnderthisconditiontheCODremovalratewas90．62%．ThemultipleFentonreactionshadrelativelygoodeffectontheremovalofCODinhighconcentrationrefractoryindustrialwastewater．AfterfourtimesofFentonoxidationCODremovalratecanreach99．21%．KeywordsFentonoxidationhighconcentrationrefractoryindustrialwastewatermultiplereactions。、、、、。。。。34420188JOUＲNALOFHUBEIPOLYTECHNICUNIVEＲSITYVol．34No．4Aug．2018、、。、SS、。BOD5/CODAOPs。AOPs2BOD5/COD。AOPs。AOPsFenton、、1－2。1894FentonFenton。FentonH2O2Fe2+·OHH2O2+Fe2+→OH－+OH+Fe3+。1Eisenhouser3FentonFenton。Fenton－Fenton、－Fenton、。FentonFentonH2O2、H2O2Fe2+、pHFenton。11．1FeSO4·7H2OH2O230%HCl10%COD126100mg/L。1．2100mLpHFenton180r/min20℃。COD5B－3HCODCODη=COD0－COD1COD0×100%。22ηCOD%COD0CODCOD1COD。22．1H2O2Fe2+CODFentonH2O2Fe2+·OHFenton4。H2O2∶Fe2+COD100mL5pH=3H2O26mol/LFe2+H2O2∶Fe2+H2O2∶Fe2+6∶18∶110∶112∶16hCODCOD。H2O2∶Fe2+COD1。1H2O2∶Fe2+COD1H2O2Fe2+4∶110∶1COD73．61%90．62%Fe2+H2O21∶101∶12COD。Fe2+·OH。222018H2O2Fe2+Fe2+·OHFe3+·OH6。·OHCOD。Fe3+7。H2O2Fe2+10∶1。2．2H2O2CODFentonFe2+H2O2·OHH2O2·OHFenton。H2O2COD100mL4pH=3H2O2∶Fe2+=10∶1Fe2+H2O2H2O22mol/L4mol/L6mol/L8mol/L6hCODCOD。H2O2COD2。2H2O2COD2H2O2COD。H2O26mol/LCODH2O2COD。H2O2H2O2·OHCODH2O2Fe2+·OHFe3+Fe2+·OH8H2O2·OH·OOHH2O2+·OH→H2O+·OOH。3·OOH·OH9·OHCOD。H2O26mol/L。2．3pHCODpHFentonpHFenton。pHCOD100mL4pH2345H2O2∶Fe2+=10∶1H2O26mol/L6hCODCOD。pHCOD3。3pHCOD3pHCOD。pH=3COD。pHCOD。pH3H+H2O2H3O+·OHCOD。pH3FentonFe3+OH－FeOH3FetonFe3+Fe2+·OH10COD。FentonpH3。2．4CODFenton。COD100mLH2O26mol/LH2O2∶Fe2+=10∶1pH=3CODCOD。COD4。4Fenton234COD4COD。Fenton。6hCODCOD。Fenton6h。2．5FentonCODFentonCOD126100mg/L11820mg/L90．63%。COD。H2O2∶Fe2+=10∶1H2O26mol/L6hpH=3Fenton。FentonCOD5。5FentonCOD5Fenton2、3、4FentonCOD2228mg/L1415mg/L993mg/L。FentonCOD99．21%COD1000mg/L。31FentonCODH2O2∶Fe2+=10∶1H2O26mol/L6hpH=3COD90．63%。2FentonCOD。4FentonCOD99．21%。1．Fenton－J．20099647－49．2．FentonJ．2012392105－106．3EisenhauerHＲ．OxidationofPhenolicWastesJ．Journal19643691116－1128．4NeyensEBaeyensT．AreviewofclassicFenton＇speroxidationasanadvancedoxidationtechniqueJ．JournalofHazardousMaterials200398333－50．5．FentonJ．20171142227－2232．6．Fenton———J．201029468－72．7DuYXZhouMHLeiLC．Kineticmodelof4－CPdegradationbyFenton/O2systemJ．WaterＲesearch20074151121－1133．8．FentonJ．201224218－22．9PandaNSahooHMohapatraS．DecolourizationofMethylOrangeusingFenton－likemesoporousFe2O3－SiO2compositeJ．JournalofHazardousMaterials20111851359－365．10LiuＲChiuHMShiauCSetal．DegradationandsludgeproductionoftextilePMsbyFen-tonandphoto－FentonprocessesJ．DyesandPigments20077311－6．242018