Fenton试剂法处理偶氮类染料废水的实验研究叶祖芬

28220094JOURNALOFTIANJINPOLYTECHNICUNIVERSITYVol.28No.2April2009Fenton1，1，2，1，2（1.，300160；2.，300160）：Fenton（Fe2+-H2O2），，pH、H2O2、Fe2+、、H2O2CODCr.：H2O2（30%12.5mL/L、pH3、Fe2+H2O21∶10、6h、H2O2，CODCr81.3%，.：；Fenton；：X791：A：1671－024X（2009）02－0047－04TreatmentofazodyeswastewaterbyFentonreagenttechniqueYEZu-fen1，DUQi-yun1，2，WANGTao1，2（1.KeyLaboratoryofHollowFiberMembraneMaterialsandMembraneProcessofMinistryofEducation，TianjinPoly-technicUniversity，Tianjin300160，China；2.MotianMembraneEngineeringandTechnologyCompany，TianjinPoly-technicUniversity，Tianjin300160，China）Abstract：InordertoassessthefeasibilityoftreatingthehighconcentrationazodyeswastewaterbyFenton′sreagent，theazodyeswastewaterafternanofiltrationfromsomefactoryinTianjinistreatedbyFenton′sreagent．TheeffectsofpHvalue，dosageofH2O2andFe2+，reactiontime，addingwaysofH2O2ontheremovalefficiencyofCODCrareinvestigated．TheresultsshowthatundertheoptimalconditionthatthedosageofH2O2（30%）is12.5mL/L，thepHvalueisabout3，themolratiobetweenFe2+andH2O2isl∶10，reactiontimeis6h，addingwaysofH2O2istheprocessofbatchfeed，theremovalrateofCODCrreaches81.3%，thetreatmenteffectisperfect.Keywords：azodyes；Fentonreagent；wastewatertreatment：2009-01-04：（1975—），，，；（1940—），，，.E-mail：[e-mail]、、、、[1].800000t50%、[2].[3-4].AOPs[5-7].AOPsFenton、.PS.11.1PS90%、、.2%CODCr1500~1700mg/L20000pH7.6~8.3.、、28.1.2H2O230%FeSO4·7H2ONaOH.FA2004ZD-2011pHS—25pH.1.3pHFentonpH.FeSO4·7H2O27.8g100mLFe2+1mol/L.200mLFentonFeSO4H2O2pH8~9CODCr.FentonpH、H2O2Fe2+、Fe2+/H2O2、.1.4CODCrpH.22.1200mL70r/min2.5mL30%H2O2Fe2+H2O21∶10pH38h1、2、4、68hCODCr1.16hCODCr75.6%;6hCODCr.H2O2·OH.Fen－ton6h.2.2pH4200mL30%H2O22.5mL1mol/LFeSO42.5mLpH2、3、4、56hpHpH=8~9CODCrpHCODCr2.2pH3CODCr3pHCODCrpH5CODCr.pH3.[8]FentonpH3~5.pH·OHpHFe2+Fe3+CODCr.pHFe2+FeOH3FeOH3Fe3+FentonCODCr.2.3H2O24200mLpH48——2330%H2O21.5、2、2.53mL.Fe2+H2O21∶106hpHpH=8~9CODCr.H2O2CODCr3.3,H2O2CODCr.H2O22.5mL.Fenton:Fe2++H2O2+H+→Fe3++H2O+OH·1Fe2++·OH→Fe3++OH·2Fe3++H2O2→Fe2++H++HO2·3HO2·+H2O2→O2+H2O+OH·4H2O2OH·H2O2H2O2Fe3+OH·.H2O2OH·OH·H2O2HO2·H2O2OH·OH·.H2O2Fe2+Fe3+[k=53L/mol·s]Fe3+H2O2OH·H2O2CODCr[9].2.4H2O2200mL30%H2O21.5mL、1mol/LFeSO42.5mLpH34hH2O21mL2hCODCr81.3%2.5mLH2O2CODCr.H2O2CODCr1.1H2O2.H2O2Fe2+·OHH2O2.2.5Fe2+4200mL30%H2O22.5mLpH31mol/LFeSO41.5、2.5、3.55mL.6hpH8~9CODCrFe2+4.4FeSO42.5mLCODCr78.1%FeSO42.5mLCODCr.1~4Fe2+H2O2Fe2+Fe3+Fe2+H2O2H2O2.Fe2+Fe2+.FeSO42.5mLFe2+H2O21∶10[10].3Fenton、、H2O230%12.5mL/LpH3Fe2+1CODCrH2O2Tab.1RemovalratesofCODCrunderdifferentaddingwaysofH2O2CODCr/mg·L-16hCODCr/mg·L-1CODCr/%165036178.1168631581.34Fe2+CODCrFig.4RemovalratesofCODCrunderdifferentdosagesofFe2+，：Fenton49——28H2O21∶106h.CODCr81.3%CODCr315mg/L.Fenton.[1]LEECKWANGCCJUANGLCetal.Effectsofsodiumcontentonthemicrostructuresandbasicdyecationexchangeoftitanatenanotubes[J].ColloidSurfA:PhysicochemEngAs－pects2008317164-173.[2]LIUYCHENXLIJetal.PhotocatalyticdegradationofazodyesbynitrogendopedTiO2nanocatalysts[J].Chemosphere200561111-18.[3]ZHOUMHEJ.Degradationofazodyebythreecleanad－vancedoxidationprocesseswetoxidationelectrochemicaloxidationandwetelectrochemicaloxidation-acomparativestudy[J].ElectrochimActa2007531902-1910.[4]OZCANASERDEMBOZCANA.AdsorptionofAcidBlue193fromaqueoussolutionsontoBTMA-bentonite[J].ColloidSurfAPhysicochemEngAspects200526673-81.[5]RADHAKVSRIDEVIVKALAIVANIK.Electrochemicaloxidationforthetreatmentoftextileindustrywastewater[J].BioresourceTechnology2009100987-990.[6]ZHANGXingwangFUJianliangZHANGYietal.AnitrogenfunctionalizedcarbonnanotubecathodeforhighlyefficientelectrocatalyticgenerationofH2O2inElectro-Fentonsystem[J].SeparationandPurificationTechnology200853116-123.[7]TEKBASMesutYATMAZHCengizBEKTASNihal.Het－erogeneousphoto-Fentonoxidationofreactiveazodyesolu－tionsusingironexchangedzeoliteasacatalyst[J].MicroporousandMesoporousMaterials2008115594-602.[8].Fenton[J].200021596-99.[9]．Fenton[J]．200316112-15.[10].[J].2001234157-159.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!··“”“”2008522.，，..，，，、，.，，“”“”.，、、，，；，（）、，，；，，.，、，..（）50——