Fenton氧化混凝协同处理焦化废水生物出水的研究左晨燕

Fenton/,,,,(,　100084):Fenton/,,:H2O2220mg/L,Fe2+180mg/L,4.5mg/L,0.5h,pH=7.COD44.5%,35,.,,Fenton/.Fenton/,,,.:;Fenton/;;:X784　:A　:0250-3301(2006)11-2201-05:2005-04-08;:2005-12-02:(863)(2002AA601250):(1980～),,,,E-mail:[e-mail]CooperatedwithCoagulationofBiologicallyTreatedCokingWastewaterZUOChen-yan,HEMiao,ZHANGPeng-yi,HUANGXia,ZHAOWen-tao(StateKeyJointLaboratoryofEnvironmentSimulationandPollutionControl,DepartmentofEnvironmentalScienceandEngineeringTsinghuaUniversity,Beijing100084,China)Abstract:ThemethodofFentonoxidationcooperatedwithcoagulationforbiologicallytreatedcokingwastewaterwasconducted.Basedonbothoftheremovalperformanceandtheoperatingcosts,optimalreactionconditionwasproposed.OperatingatH2O2concentration220mg/L,Fe2+concentration180mg/L,PAMconcentration4.5mg/L,reactiontime0.5handpH=7,about44.5%ofCODwasremovedandchromareached35.Inaddition,throughanalyzingofthechangesofmolecularweightdistributionandconstituteoforganiccompoundsineffluent,thepollutanttransformationrulewasputforward.TheresultshowsthattheeffluenttreatedbyFentonoxidationcooperatedwithcoagulationcanreachthewastewatersecondarydischargestandard,andtheoperationcostsareacceptable.ThisimpliesthatthetechniqueofFentonoxidationcooperatedwithcoagulationhaspromisinginpractice.Keywords:cokingwastewater;Fentonoxidationcooperatedwithcoagulation;distributionofmolecularweight;analyzingoforganiccompoundsconstitute　　COD、、,,[1,2].A/OA/A/O.,,,.Fenton/[3,4],,,.1　1.1　(),(A/A/O).1.1　Table1　Waterqualityofbiologicallytreatedcokingwastewater1)COD/mg·L-1220～270150/mg·L-12～1525/200～300801)GB8978-1996　　1,,COD.1.2　1.2.1　2711200611　　　　　　ENVIRONMENTALSCIENCEVol.27,No.11Nov.,2006DOI:10.13227/j.hjkx.2006.11.011FeSO4(,);H2O2(,30%);(,MW300×104,).1.2.2　(1)Fenton/　Fenton,5min,,COD、;,Fenton,4min5min,Fenton.(2)[5,6]　.0.45μm,5×104、3×104、1×104、6×103、4×103、2×103、1×103、5×102,,0.2MPa,COD,.1.2.3　COD:HACHCOD(HACH).:(GB11903-89).:StirredCell(MILLIPORE)HM().,,GC/MS.2　2.1　H2O2COD[7,8],H2O2Fe2+200mg/L160mg/L,.Fe2+160mg/L,H2O2.1Fe2+160mg/L,0.5h,pH=7,H2O2COD.H2O2,COD,.H2O2220mg/L,COD.H2O2,220mg/LH2O2.COD34%,50.2.2　Fe2+CODH2O2220mg/L,Fe2+.2H2O2220mg/L,0.5h,pH=7,Fe2+COD.2,Fe2+COD,CODFe2+,Fe2+180mg/L,.Fe3+.180mg/LFe2+,COD36%,50.1　H2O2CODFig.1　InfluenceofH2O2concentrationontheCODandchromaremovalperformance2　Fe2+CODFig.2　InfluenceofFe2+concentrationontheCODandchromaremovalperformance2.3　CODFenton..H2O2Fe2+Fe3+,Fe3+.,Fenton[9].,COD.2202　　　　　　273H2O2220mg/L,Fe2+180mg/L,0.5h,pH=7,COD.3,COD,4.5mg/L,COD44.5%,35,.3　CODFig.3　InfluenceofPAMconcentrationontheCODandchromaremovalperformance2.4　COD4H2O2220mg/L,Fe2+180mg/L,4.5mg/L,pH=7,COD.4,,COD.30min,COD,30min,,.2h,COD53%,30.,30min.4　CODFig.4　InfluenceofreactiontimeontheCODandchromaremovalperformance2.5　pHCOD,Fenton,.pH,Fenton.5H2O2220mg/L,Fe2+180mg/L,4.5mg/L,0.5h,pHCOD.5,Fenton,pH3,COD58%,30.,pH3.pH,pH=7,,pH=7.,pH=7.5　pHCODFig.5　InfluenceofpHontheCODandchromaremovalperformance2.6　[10].,200mg/L,8mg/L,COD,Fenton/6.　　6,Fenton/COD(44.5%)(37%)7.5,.Fenton/,COD.2.7　Fenton/,220311　　　　　　　　　6　Fenton/Fig.6　ComparisonofFentonoxidationcooperatedwithcoagulationandconventionalcoagulation[5].7Fenton/.2.,.1000COD59.5%,50052%..2,Fenton/(1×104),COD26.7%4.7%,(1×103),COD59.5%82.6%.Fenton,.Fenton/　　　　7　Fenton/Fig.7　MolecularweightdistributionofpollutanttreatedbyFentonoxidationcooperatedwithcoagulation2　Fenton//%Table2　ChangesinmolecularweightdistributionofpollutanttreatedbyFentonoxidationcooperatedwithcoagulation/%CODCOD1×10426.74.71×104～1×10313.812.81×10359.582.6,[2,11～14].7,4×103～1×103,COD6.9%0.Fenton,,4×103～1×103,.2.8　Fenton/82.6%,600,3.3　Fenton/Table3　AnalyzingoforganiccompoundsconstituteineffluenttreatedbyFentonoxidationcooperatedwithcoagulation/%/%2.202.7219.331.9051.751.268.681.721.193.732.333.19　　.,Fenton/,80.95%,,11.80%,7.25%.2204　　　　　　27,60%,,2Fenton/,Fenton.,Fenton/,,.Fenton/,,.3　　　,Fenton/:H2O2220mg/L;Fe2+180mg/L;4.5mg/L,0.5h,pH=7.COD44.5%,35,.,Fenton/.27.5%H2O22150/t,FeSO4500/t,12000/t.,1.8/t.--,3/t.,Fenton/.4　　　(1)Fenton/:H2O2220mg/L;Fe2+180mg/L;4.5mg/L;0.5h;pH=7.COD44.5%,35,.(2)Fenton/(5×104),(1×103),Fenton.4×103～1×103,Fenton.(3)Fenton/90%,Fenton.2,Fenton/,,.(4)Fenton/1.8/t,,,.:[1].[D].:,1995.[2]GuedesAMFM,MadeiraLMP,BoaventuraRAR,etal.Fentonoxidationofcorkcookingwastewater———overallkineticanalysis[J].WaterResearch,2003,37:3061～3069.[3]MontserratP,FrancescT,JoseAGH,etal.RemovaloforganiccontaminantsinpaperpulptreatmenteffluentsunderFentonandphoto-Fentonconditions[J].AppliedCatalysisB:Environmental,2002,36:63～74.[4]ParkTJ,LeeKH,JungEJ,etal.RemovalofrefractoryorganicsandcolorinpigmentwastewaterwithFentonoxidation[J].WaterScienceandTechnology,1999,39:189～192.[5]VidalG,VidelaS,DiezMC.MolecularweightdistributionofPinusradiatakraftmillwastewatertreatedbyanaerobicdigestion[J].Bioresource,2001,77(2):183～191.[6]HenningK,SteffesHJ,FakoussaRM.Effectsonthemolecularweightdistributionofcoal-derivedhumicacidsstudiedbyultrafiltration[J].FuelProcessingTechnology,1997,52:225～237.[7]KangYW,HwangKY.Effectsofreactionconditionsontheox