Fenton1,2,3,4(1.,730070;2.,100044;3.,450002;4.,100037),、,,,“”[1],,,Fenton[2],Fe2+Fenton,:CODCr,Fenton。:pH2,200mg/LH2O2(30%),;60min,CODCr25%,16%,m(BOD5)/m(CODCr)0.210.45,,。:;;;;Fenton:X783.031:A:%1009-2455(2010)05-0035-04PretreatmentoforganicpromoterwastewaterbyFentonreagentenhancedtwo-stageferric-carbonmicro-electrolysisFENGXiao-juan1,LIDe-sheng2,HONGFei-yu3,ZHUDong-nian4(1.SchoolofEnvironmentalandMunicipalEngineering,Lanzhou730070,China;2.SchoolofCivilEngineeringandArchitecture,BeijingJiaotongUniversity,Beijing100044,China;3.Multi-functionalDesignandResearchAcademy,ZhengzhouUniversity,Zhengzhou450002,China;4.BeijingUrbanEngineeringDesignandResearchInstitute,Beijing100037,China)Abstract:InviewofthelowCODCrremovalratewhenusingsinglestageferric-carbonmicro-electrolysis(FCME)totreathighconcentrationhard-biodegradableorganicwastewater,thetwo-stageFCMEwithFentonreagentenhancingthetreatedwaterfromthefirststagewasinvestigated.Theresultsshowedthat:theeffluentwaterfromthefirststageFCMEwasaddedintothetwo-stageFCMEreactorafteritspHvaluehadbeenadjustedat2and200mg/LofH2O2(30%)hadbeenadded.Through60minofreaction,theremovalrateofCODCrwasabout25%higherthanthatbythefirststageFCME,and16%higherthanthatbytheseriestwo-stageFCME,themassratioofBOD5toCODCrwasincreasedfrombelow0.21to0.45,thepretreatmenteffectwassatisfying.Itcouldbeseenthat,two-stageFCMEwasaproperprocessforhighconcentrationhard-biodegradableorganicchemicalindustrialwastewatertreatment.Keywords:chemicalindustrialwastewater;hard-biodegradable;pretreatment;ferric-carbonmicro-electro-lysis;Fentonreagent:(ZS021-A25-021-G);“”(QL-05-08A):2010-08-09;:2010-09-03INDUSTRIALWATER&WASTEWATERVol.41No.5Oct.,2010·35·INDUSTRIALWATER&WASTEWATERVol.41No.5Oct.,2010Fe2+,,,Fenton,。,,,-Fenton,CODCr,Fenton,,,。11.12Φ100mm×H800mm、(5~6mm),1∶1。60min,,60min,。450mm。1。1.2。,,、、、、。pH2~13,CODCr8000~20000mg/L,(m(BOD5)/m(CODCr)≤0.21),SS28~158mg/L。1.345L/h。,,pH、H2O2,,。,2,,,,,,[3]。1.4COD:;BOD5:;pH:;SS:;Fe2+:。22.12.1.1pHCODCr11900mg/L,pH,60min,pH,CODCr2。2,pH,CODCr,pH1,CODCr51%,pH6,CODCr15.8%。,:(Fe):Fe-2e→Fe2+(1)(C):2H++2e→2[H]→H2(2),,。,(2),[H];,,Fe2+Fe(OH)2:Fe2++2H2O→Fe(OH)2+2H+,H+,。pH,。pH、,,Fe2+Fe3+,1Fig.1ExperimentalequipmentofFCME12345612526342pHFig.2InfluenceofinfluentpHvalueonCODCrremovalinfirststageFCMEreactor123456pHρ(CODCr)/(g·L-1)12108642CODCr/%605040302010·36·,,,:Fenton,。pH2。2.1.2CODCr12030mg/L,pH2,,CODCr3。3,,CODCr。90min,CODCr,90min,CODCr。,,,,H+H2H2O,H+、pH,pH,。,,Fe2+,Fe3+,[4]。90min。2.22.2.1FentonH2O2,CODCr12030mg/L,(ρ(CODCr)6003.8mg/L),pH2,H2O2,,60min4、5。4,CODCr,CODCr59%,8%,。;,,,,,,,。5,H2O2,CODCr75%,CODCr16%,CODCr12000mg/L3000mg/L,,H2O2Fe2+Fenton,·OH,,,,·OH[5],,·OH,。m(BOD5)/m(CODCr)0.45,,。2.2.2Fenton,H2O2Fe2+Fenton,Fe2+220mg/L,FentonFe3Fig.3InfluenceofreactiontimeonCODCrremovalinfirststageFCMEreactor306090120150/minρ(CODCr)/(g·L-1)12108642CODCr/%60504030201004Fig.4Effectofseriestwo-stageFCMEonCODCrremoval306090204060/minρ(CODCr)/(g·L-1)12108642CODCr/%8060402005FentonFig.5RemovalrateofCODCrbyFentonreagentenhancedtreatment306090204060/minρ(CODCr)/(g·L-1)12108642CODCr/%806040200·37·INDUSTRIALWATER&WASTEWATERVol.41No.5Oct.,2010[3],pH2,Fenton[6],。(1)CODCr5711mg/L,,240mg/LH2O2(30%),,CODCr6。6,,CODCr,60min,CODCr,60min,CODCr,60min。(2)H2O2CODCr6003.8mg/L,80、140、200、260、320mg/LH2O2,,60min,CODCr7。7,H2O2CODCr,75.2%,25%。H2O2Fe2+Fenton,H2O2CODCr,H2O2200mg/L,CODCr74.1%,H2O2,CODCr,H2O2,H2O2,·OH,CODCr;H2O2,H2O2·OH,Fe2+Fe3+,Fe3+H2O2OH-,,,CODCr。3,,H2O2Fe2+Fenton,pH2,,CODCr75%,CODCr25%,CODCr16%,60min,H2O2200mg/L。,,m(BOD5)/m(CODCr)0.45,,,。:[1],./Fenton[J].,2008,2(5):608-610.[2]KaichouhG,NOturan,MAOtura.DegradationoftheherbicideimazapyrbyFentonreactions[J].EnvironmentalChemistryLetters,2004,2(1):31-33.[3],.THF[J].,2009,38(9):1391-1394.[4],,./[J].,2009,29(4):42-45.[5],,.-Fenton[J].,2009,38(6):370-373.[6],,.US/Fenton[J].,2007,33(6):7-9.:(1985-),,,,,()dahaifxj@163.com。6Fig.6InfluenceofreactiontimeonCODCrremovalbyenhancedtreatment20406080100/minρ(CODCr)/(g·L-1)2.52.01.51.00.50CODCr/%807570656055507H2O2Fig.7InfluenceofH2O2dosageonCODCrremovalintwo-stageFCMEreactor80140200260320H2O2/(mg·L-1)ρ(CODCr)/(g·L-1)86420CODCr/%8070605040·38·