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WATERPURIFICATIONTECHNOLOGYVol.28,No.5,2009October25th,2009Fenton-,(,510006),。Fenton+(BAF)A2/O,Fenton:n(H2O2)∶n(Fe2+)=0.68,Fe2+=2g/L,90min,pH=5。Fenton,BAF,12h,CODCr100mg/L,50,。Fenton:X703:A:1009-0177(2009)05-0039-04AdvancedTreatmentofCokingPlantWastewaterbyFenton-BAFLIHao,WANGXiao-jun(SchoolofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,China)AbstractCokingwastewater,whichcontainslotsofpersistentorganicpollutants,ishardtomeetthedischargestandardbyregularbiochemicaltreatment.CombiningprocessesofFentonandBAFwasusedtoadvancedtreatthewastewaterafterthebiochemicaltreatment.Withthelowestcost,theoptimaloperatingconditionswere:n(H2O2)∶n(Fe2+)=0.68,Fe2+=2g/L,thereactiontimewas90minandpH=5.Cokingwaster,whichhadbeentreatedbybiochemicalprocess,inductedintocombiningporcessesofFentonandBAFlasted12h,CODofthefinaleffluentwaslessthan100mg/L,colorwaslessthan50times,whichhasmetthenationalfirst-gradestandardofeffluent.KeywordsFentonBAF(biologicalaeratedfilter)cokingwastewater[]2009-04-09[](1986-),,,。:15914304148;E-mail:lihao861007@yahoo.com.cn。[],:13802767806;E-mail:cexjwang@scut.edu.cn。2009,28(5):39-42WaterPurificationTechnology,,。,、、、,[1],、、、、,70%;、、、、,。,,,,[2]。Fenton,,Fenton、,,,。(BiologicalAeratedFilter,BAF),。BAF,;,,,,[3]。FentonBAF,,Fenton,。11.1H2O2(30%)、FeSO4·7H2O、NaOH、H2SO4,。,A2/O,CODCr=200~230mg/L,[NH3-N]=12.6mg/L,256,pH=8。39--DOI:10.15890/j.cnki.jsjs.2009.05.001Vol.28,No.5,2009,.Fenton-1.2pHS-25;XJ-COD;BAFBAF,φ96mm×1200mm,3~5mm。ACO-308AC,Q=45L/min。1.3200mL250mL,H2SO4NaOHpH,,,,pH7~8,,CODCr,Fenton24h,,BAF,,CODCr。1.4pH、COD、[4]。22.1Fe2+H2O2200mL,H2O21mL/L,Fe2+0.5、1、2、3、4、5、6g/L,n(H2O2)∶n(Fe2+)5.45、2.72、1.36、0.91、0.54、0.45,1.5h,1。1,n(H2O2)∶n(Fe2+)0.450.68,COD47%65.6%,n(H2O2)∶n(Fe2+)0.68,COD,CODCr75mg/L,16。,COD,n(H2O2)∶n(Fe2+)3,50,。Fenton,n(H2O2)∶n(Fe2+),,OH·,n(H2O2)∶n(Fe2+),OH·,Fe(OH)2+,Fe2+,H2O2OH·;,OH·,H2O2OH·,H2O2,H2O2,,OH·。:OH·+H2O2→HO2·+H2O(1)HO2·OH·,:OH·+HO2·→H2O+O2(2)H2O2[5]。FentonH2O2Fe2+。n(H2O2)∶n(Fe2+)0.68,Fe2+COD,Fe2+,2。2,Fe2+,COD。Fe2+8g/L,COD75.8%,Fe2+8g/L,COD,,Fe2+2g/L,32。Fe2+,Fe2+,H2O2,Fe2+,,;Fe2+,。1n(H2O2)∶n(Fe2+)CODFig.1Effectofn(H2O2)/n(Fe2+)ratioonCODremovalandchroma2Fe2+CODFig.2EffectofFe2+dosageonCODremovalandchroma40--WATERPURIFICATIONTECHNOLOGYVol.28,No.5,2009October25th,2009Fe2+,,,,,,,Fe2+,COD,。Fe2+2g/L,CODCr107mg/L,,BAF,n(H2O2)∶n(Fe2+)0.68,Fe2+2g/L。2.20.68,Fe2+=2g/L,COD。3,90min,,25%44.5%,90min150min,,,,,50。Fe2+Fenton,,,Fe2+,Fe3+Fenton,[6]。90min。2.3pH200mL,n(H2O2)∶n(Fe2+)=0.68,Fe2+=2g/L,pHCOD。4,pH,COD。pH510,COD56.65%23.5%,pH,pH5~7,16,pH,Fe2+,。,Fenton,pH[1]。,pH=5,COD,,pH5。2.4BAFFenton(0.5mL/L,2g/L)BAF,,6h。5。5,Fenton,COD,,,6h,CODCr94mg/L,12h,CODCr86mg/L,18h,CODCr67mg/L,18h,BAFCOD,CODCr60~68mg/L,,,[7],BAF12h。4pHCODFig.4EffectofinitialpHvalueonCODremovalandchroma5BAFCODFig.5EffectofintermittentoperationtimeonCODremoval3CODFig.3EffectofreactiontimeonCODremovalandchroma41--Vol.28,No.5,2009《》2010《》,1981,、。、;、、;,。《》、、;。“”、“”、“”、“”、“”、“”、“”、“”、“”、“”、“”“”。《》、、、、、、、、、、、、。《》,,16,108,CN11—1703/TU,ISSN1002—8420。8,6,48。《》,。2007,100/;,。《》,,,、、,。:010-66419847();010-66410088--2819:::121819::《》:《》:100031:01090345600120109089962:、,、,。!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!,.Fenton-3(1)A2/OFenton+BAF,(GB8978—1996)。(2)Fenton:n(H2O2)∶n(Fe2+)=0.68,[Fe2+]=2g/L,90min,pH=5,FentonBAF12h,CODCr200mg/L90mg/L,COD56%。(3)FentonBAF,Fenton,BAF,。[1],,,.US/Fenton-[J].,2006,26(6):17-20.[2],,.UV-Fenton[J].,2008,34(10):42-44.[3],.AF+BAF[J].,2006,26(10):27-29.[4]《》.[M].4.:,2002:216-219.[5],.Fenton[J].,2001,27:11-14.[6],,,.Fenton[J].,2007,24(7):29-30.[7]XiaojunWang,XiaoyangGU,XiangwuZhou,etal.Treatmentofwastewatercontainingacidrosereddyebybiologicallyaeratefilterafterchemicaloxidation[J].EnvironmentalTechnology.2007,28,(8):831-839.42--
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