FeCH2O2协同催化氧化处理印染废水汪永红

2010,19(6):[e-mail]20676050216105131966E-mail:[e-mail]*E-mail:[e-mail]2010-04-22*1.5100452.5106303.510630Fe-C-H2O2/pH650(COD)468mg·L-1pH=4.8/251H2O2150mg·L-130min98CODCr78Fe-CFe-C-H2O2CODFe-C-H2O2Fe-CX791A1674-5906201006-1374-04CODCr[1,2]CODCrFenton[2-5][6-7][8-9]pHFentonFe-C-H2O2H2O2FentonFe/CFe2+/H2O2CODFe-C-H2O2FentonCOD1650(CODCr)468mg·L-1pH9.0(SS)350mg·L-122~4mm2~3mm27%3Fe-C-H2O2150mL721pHCOD15%60min2%10minpH22~3mm,3150mLDOI:10.16258/j.cnki.1674-5906.2010.06.014Fe-C-H2O21375Fe-CFe-C-H2O2721,1EtEt=[(A0–At)/A0]×100%1EttA0AttCODCr2CODCrRt=[(C0–Ct)/C0]×100%2RttC0CODCrCttCODCrm(Fe)m(C)110.51.2g91%84%~86%Fe-C“FeC”Fe2CC34Fe2e→Fe2+32H2e→2H→H24FeHFe2+CODFeCFe2+H“FeC”1.2gm(Fe)m(C)=251FeC15~50℃45℃FeC135℃84%COD40%~42%35℃Fe/CFe/C/H2O230minCODCrTable1Therelationshipbetweentherateofdecolorizationanddyeingwastewatertemperature/℃51015203035404550/%35.155.264.572.880.184.184.484.684.9COD/%18.423.628.731.534.640.641.741.842.1650,ρ(COD)=468mg·L-1,pH=5.150minm(Fe)m(C)=251012345675060708090100脱色率/%m(碳粒)/g图1碳颗粒质量与印染废水脱色率的关系Fig.1Therelationshipbetweenqualityofcarbonparticlesandthedecolorizationrateofdyeingwastewater实验条件：水温25℃,废水pH＝5.2,微电解反应时间50min,铁屑质量为30g13761962010622COD150mg·L-198OH•150mg·L-198%COD50~250mg·L-1COD35.6%87.0%2CODCODCODFe/CFe/C/H2O2Fe/CH2O23Fe2+H2O2/Fe2+Fenton[4]Fe2++H2O2→Fe3++OH•+OH-(4)Fe3++H2O2→Fe2++HO2•+H+(5)OH•COD3~5pHFe/CFentonpHFe/C/H2O2Fe/C2pHFe/C/H2O2Fe/C150mg·L-12pHpHFe/C/H2O2COD2Fe/C/H2O2CODpHFe/CFe/C/H2O2pHpH5.0Fe/C/H2O2Fe/CFe/C/H2O2CODCrpHFe/C/H2O2Fe/CFenton650(COD)468mg·L-1pH=4.8150mg·L-1m(Fe)m(C)=25198%COD80%Fe/C/H2O2[1],,,.[J].,2009,32(9):144-147.CHENYimin,LIJinhua,LILonghai,etal.ExperimentalStudyonDegradationofDyeingWastewaterbyPulseElectro-coagulation[J].EnvironmentalScienceandTechnology,2009,32(9):144-147.[2],,,.Fenton[J].,2006,26(12):9-13.SUNJianhui,SUNShengpeng,WANGHuiliang,etal.ProgressoftheresearchonFentonoxidationtechnologyinthetreatmentofindustrialwastewatercontainingrefractoryorganicmatter[J].IndustrialWaterTable2EffectofH2O2dosageonthedecolorizationandCODremovalrateH2O2/(mg·L-1)050100150200250/%45.578.691.698.598.999.9COD/%22.035.649.778.584.387.1650,ρ(COD)=468mg·L-1,pH=4.830minm(Fe)m(C)=251234567405060708090100脱色率/％图2pH与脱色率之间的关系曲线Fig.2TherelationshipbetweenpHandthedecolorizationratepHFe/C/H2O2Fe/CFe-C-H2O21377Trentment,2006,26(12):9-13.[3]TANGWZHUANGCP.2,4-DichlorophenoloxidationkineticsbyFenton’sreagent[J].Environ.Technol.,1996,17(12):1371-1378.[4],,,.Fenton[J].,2003,66(7)54.LIMingyu,TIANYilin,FANGJianzhang,etal.EffectofInorganicIonsontheDegradationofAniline-containingWaterwithFenton’sReagent[J].Chemistry,2003,66(7)54.[5]XUX,LIH,WANGW,etal.DegradationofdyesinaqueoussolutionsbytheFentonprocess[J].Chemosphere,2004,57(7):595-600.[6]DANESHVARN,SALARID,KHATAEEAR.Photocatalyticdegradationofazodyeacidred14inwater:investigationoftheeffectofoperationalparameters[J].J.Photochem.Photobiol.A:Chem.,2003,157(1):111-116.[7],,,.[J].,2009,29(5):512-517.LIMingyu,SHANGWei,WANGXinle,etal.Thedegradationofmethylorangewithphoto-electro-chemicalsynergisticcatalysissystem[J].ChinaEnvironmentalScience,2009,29(5):512-517.[8],,,.-[J].,2005,18(2):74-77.ZHOURongfeng,XIAOHua,LULiang,etal.CatalyzedIronInternalElectrolysis-BiochemicalMethodforTreatingDyeingIndustryWastewater[J].ResearchofEnvironmentalSciences,2005,18(2):74-77.[9],,.——[J].,2009,31(3):99-101.TreatmentofdyewastewaterwiththesystemofFe/C/H2O2WANGYonghong1,PANQian2,3,WANGLiyan2,3,WANGKunkun2,3,LIMingyu2,3*1.GuangdongProvinceAcademyofEnvironmentalScienceGuangzhouGuangdong510045,China;2.DepartmentofEnvironmentalEngineering,JinanUniversity,GuangzhouGuangdong510630,China;3.Keylaboratoryofwater/soiltoxicpollutantscontrolandbioremediation,departmentofeducationofGuangdongprovince,Guangzhou510630,ChinaAbstract:ThetreatmentofdyewastewaterwithanewcatalyticreactivesystemofFe/C/H2O2wasstudied.TheeffectsoftheFe/Cmassratio,theconcentrationofhydrogenperoxide,thepHofwastewater,andthesystemtemperatureonthedeodorizationandtheCODremovalofwastewaterwereresearched.Theexperimentalresultsshownthat,undertheconditionsofroom-temperature,thedeodorizationratioandremovalratioofCODCrwere98%and78%respectivelywhenthemassratioofFe/Cis25:1,pH=4.8,theconcentrationofhydrogenperoxideis150mg·L-1,andthereactiontimeis30minasthecolourityandCODCrofthewastewateris650and468mg·L-1respectively.ComparedwiththesystemFe/Cmicro-electrolysis,thetreatmentefficiencyofdyewastewaterbythenewreactionsystemofFe/C/H2O2ishigher.Keywords:Fe-C-H2O2system;Fe-Cmicro-electrolysis;dyewastewater