Fenton氧化法用于低可生化性石化废水预处理的研究

3632009()JournalofBeijingUniversityofChemicalTechnology(NaturalScience)Vol.36,No.32009Fenton何士龙1,2　高迎新2　杨　敏2　王丽萍1　张　洁1(1.,　221116;2.,　100085)　:Fenton,pH=3.0,ρ(H2O2)=500mg/L,ρ(H2O2)/ρ(Fe2+)=6,150min,,,BOD5/CODCr0.030.47。(ORP)Fenton。ORP,H2O2;ORP,Fenton。,H2O2,,。:Fenton;;;;:X703.1:2008-10-24:(50525824);(20080201):,1977,,E-mail:[e-mail]引　言。[1-4],,。,,。Mu[5],。[6]、[7]、[8-9],,。Fenton,、,[10-12]。Fenton,H2O2Fe2+、、。,Fenton。1　实验部分1.1　,1。1　Table1　AveragecompositionofthewastewaterCODCr/mg·L-1BOD5/mg·L-1TOC/mg·L-1NB/mg·L-1TSS/mg·L-1pH130054420114.84101.8～2.11.2　FeSO4·7H2O,H2O2(30%),NaOH,,。1.3　。,,,pH3.0,Fenton。2h,NaOH,pH7.5～8.0,30min,。(BOD5,CODCr,TOC)。H2O2。CODCrH2O2CODCr。(GC/MS)[5]。(ORP)。2　结果与讨论2.1　Fenton2.1.1　H2O2与Fe2+投加质量比H2O2Fe2+Fenton。H2O2Fe2+[12],。H2O2Fe2+,H2O21500mg/L(),Fe2+H2O2Fe2+。1pH=3[13]Fe2+CODCrTOC。ρ(H2O2)=1500mg·L-1,2h1　Fe2+H2O2、CODCrTOCFig.1　TheeffectofFe2+doseonresidualH2O2,CODCrandTOC1,Fe2+,H2O2,Fe2+250mg/L,H2O2。CODCr,Fe2+250mg/L,CODCrFe2+。Fe2+250mg/L,CODCr,Fe2+,;Fe2+,CODCr。TOC,Fe2+100mg/L,20%TOC;Fe2+100～250mg/L,TOCCODCr,,,;Fe2+,TOC,Fe2+,Fen-ton。,H2O2Fe2+1500∶250,ρ(H2O2)/ρ(Fe2+)=6∶1。2.1.2　Fenton试剂绝对投加量H2O2Fe2+,Fenton。2ρ(H2O2)/ρ(Fe2+)=6∶1,FentonCODCr。ρ(H2O2)/ρ(Fe2+)=6∶1,pH=3,2h2　FentonCODCrFig.2　TheeffectofdoseofFentonreagentonthereductioninCODCrbeforeandafteraddingNaOH2,,CODCr。Fe2+,CODCr,Fen-ton。ρ(H2O2)/ρ(Fe2+)=6∶1,pH=3,2h3　FentonBOD5/CODCrFig.3　TheeffectofdoseofFentonreagentontheratioofBOD5toCODCr3Fenton·88·()　　　　　　　　　　　　　　　2009。,,BOD5/CODCr0.030.47,。H2O2(500mg/L),BOD5/CODCr。,CO2,。Fen-ton,,Fentonρ(H2O2)=500mg/L,ρ(H2O2)/ρ(Fe2+)=6∶1。2.1.3　最佳反应时间ρ(H2O2)=500mg/L,ρ(H2O2)/ρ(Fe2+)=6∶1,Fenton,;OPR。4～5。4,90min,CODCr,BOD5/CODCr150min。,。ρ(H2O2)=500mg·L-1,ρ(H2O2)/ρ(Fe2+)=6∶1,pH=34　CODCrBOD5/CODCrFig.4　TheeffectofreactiontimeonresidualCODCrandtheratioofBOD5toCODCr5,,ORP。90min,ORP,,H2O2,H2O2ORP。Lopez[14],Fenton。,H2O2,BOD5/CODCr,ORP2(150min),ORP12,。,Fenton,H2O2,。H2O2,,。,ORPFenton,:1FentonH2O2;2。ORPFenton,。ρ(H2O2)=500mg·L-1,ρ(H2O2)/ρ(Fe2+)=6∶1,pH=35　H2O2ORPFig.5　TheeffectofreactiontimeonresidualH2O2andvariationofORP2.2　Fenton6　FentonGC/MSFig.6　GC/MSchromatogramsduringtheprocessofFentonoxidationFenton,GC/MS。62。62,Fenton,4mg/L。ORP1(90min)2(150min),,H2O2,·89·3　　　　　　　　　:Fenton(35.6mg/L3.3mg/L)。,H2O2,,。2　Table2　ChangeofnitrobenzeneconcentrationsintheprocessofFenton'soxidationρ/mg·L-1114.890min35.6150min3.30.43　结论(1):pH=3,ρ(H2O2)=500mg/L,ρ(H2O2)/ρ(Fe2+)=6∶1,150min,,4mg/L;,BOD5/CODCr0.030.47。(2)OPRFenton,2:ORP1,FentonH2O2;2,。ORPFenton,。(3)Fenton,H2O2,,。:[1]　,,,.[J].,2000,20(3):241-244.WeiCH,HouY,RenY,etal.Bio-cooperationeffectandmixingsubstratesintheaerobicdegradationofni-trobenzene[J].ChinaEnveironmentalScience,2000,20(3):241-244.(inChinese)[2]　PeresCM,NaveauH,AgathosSN.Biodegradationofnitrobenzenebyitssimultaneousreductionintoanilineandmineralizationoftheanilineformed[J].AppliedMicrobi-ologyandBiotechnology,1998,49(3):343-349.[3]　NielsenPH,ChristensenTH.Variabilityofbiologicaldegradationofphenolichydrocarbonsinanaerobicaquiferdeterminedbylaboratorybatchexperiments[J].JournalofCotaminantHydrology,2004,17:55-67.[4]　,,,.[J].,2008,48(2):173-177.ZhengCL,ZhouJT,WangJ,etal.Degradationofni-trobenzenebyamixtureofnitrobenzenedegradingstrainsunderaerobiccondition[J].JournalofDalianUniversityofTechnology,2008,48(2):173-177.(inChinese)[5]　MuY,YuHQ,ZhengJC,etal.Reductivedegrada-tionofnitrobenzeneinaqueoussolutionbyzero-valentiron[J].Chemosphere,2004,54:789-794.[6]　LatifogluA,GurolD.Theeffectofhumicacidsonni-trobenzeneoxidationbyozonationandO3/UVprocesses[J].WaterResearch,2003,37:1879-1889.[7]　Arslan-AlatonI,FerryJL.H4SiW12O40-catalyzedoxida-tionofnitrobenzeneinsupercriticalwater:Kineticandmechanisticaspects[J].AppliedCataylsisB:Environ-mental,2002,38:283-293.[8]　BhatkhandeDS,KambleSP,SawantSB,etal.Pho-tocatalyticandphotochemicaldegradationofnitrobenzeneusingartificalultravioletlight[J].ChemicalEngineeringJournal,2004,102:283-290.[9]　,,,.[J].,2008,40(8):1227-1232.ZhaoL,MaJ,SunZZ,etal.Effectofappliedquantita-tivefactoronrateconstantofcatalyticozonationforthedecompositionofnitrobenzeneinaqueoussolution[J].JournalofHarbinInstituteofTechnology,2008,40(8):1227-1232.(inChinese)[10],.Fenton[J].:,2008,18(1):31-39.JinYX,WenY.Studyonfentonprocessforthepre-treatmentoflandfillleachate[J].JournalofLuoyangIn-stituteofScienceandTechnology:NaturalScienceEdi-tion,2008,18(1):31-39.(inChinese)[11]ChamarroE,MarcoA,EsplugasS.Useoffentonreagenttoimproveoforganicchemicalbiodegradability[J].WaterResearch,2001,35(4):1047-1051.[12]KuoKW.DecolorizingdyewastewaterwithFenton'sreagent[J].WaterResearch,1992,26:881-886.[13],,,.Fenton[J].,2001,22(5):60-64.WeiCH,ChenCH,WangG,etal.Characteristicsof·90·()　　　　　　　　　　　　　　　2009nitrobenzenecontainingwastewatercatalyticoxidationdegradationbyfentonreagent[J].ChineseJournalofEn-viromentalScience,2001,22(5):60-64.(inChinese)[14]LopezA,PaganoM,VolpeA,etal.Fenton'spre-treat-mentofmatureoflandfillleachate[J].Chemosphere,2004,54:1005-1010.　Pre-treatmentoflowbiodegradableofpetrochemicalwastewaterwithFentonoxidationHEShiLong1,2　GAOY