Researchonthepretreatmentofsemi-cokingwastewaterbyFentonoxidationcombinedwithammoniastrippingLüYongtao1,WangLei1,ChenZhen2,SunTing3,WuHongya1,WangTao1,WangZhiying1(1.SchoolofEnvironmentalandMunicipalEngineering,Xi’anUniversityofArchitectureandTechnology,Xi’an710055,China;2.JiangsuSunnyEnvironmentalProtectionEngineeringCo.,Ltd.,Nanjing210019,China;3.Xi’anMunicipalInstituteofEnvironmentalProtection,Xi’an710002,China)Fenton—1,1,2,3,1,1,1(1.,710055;2.,210019;3.,710002)[]Fenton—,COD、。,100mL,Fenton:30%H2O240mL、n(H2O2)∶n(Fe2+)=20、pH=6;:60℃、pH=11;,Fenton—COD、95.72%、95%88%,4~5。[];Fenton;;[]X703.1[]B[]1005-829X(2010)11-0056-03Abstract:TheresearchonFentonoxidationcombinedwithammoniastrippingforsemi-cokingwastewaterpretreat-menthasbeenstudied.TheinfluentialfactorsandremovalefficienciesofCOD,chromaandammonia-nitrogenareinvestigated.Whenthewatersamplevolumnis100mL,theresultsshowthattheoptimalconditionsofFentonoxi-dationareasfollows:thedosageofH2O2is40mL,n(H2O2)∶n(Fe2+)=20,andpH=6.Ammoniastrippingtechnicalconditionsare:temperature=60℃,andpH=11.Undertheseconditions,theremovalratesofCOD,chromaandammonia-nitrogencanreach95.72%,95%and88%,respectively.Thebiodegradabilityisimprovedby4to5times.Keywords:semi-cokingwastewater;Fentonoxidation;ammoniastripping;pretreatment[](2009ZX07212-002);(CXY09025〔4〕);(09JK543),。(950~1050℃)、(700~800℃)(500~600℃)。、;,。COD、、〔1〕,,COD10,、,。,。〔2-4〕:Fenton,COD。,Fenton,,。11.1,1。3011201011IndustrialWaterTreatmentVol.30No.11Nov.,201056——2010-11,30(11),:Fenton—1.21.2.1Fenton100mL,1+3H2SO4pH,FeSO4·7H2O,FeSO4,30℃H2O2,,30min,COD。1.2.2Fenton,NaOHpH,,2000,3h。1.31.3.130%H2O2、FeSO4·7H2O、NaOH、H2SO4。1.3.2COD:;BOD5:;:;:;:;:。22.1Fenton2.1.1H2O2CODFentonFe2+H2O2HO·,HO·CO2H2O。FentonCOD,、。:pH2~4,Fenton〔5〕,,pH4。〔4〕:n(H2O2)∶n(Fe2+)=20,Fenton。,H2O2COD,1。1,H2O2COD,H2O2,COD,,H2O240mL,COD。H2O2,HO·,HO·,COD;H2O2,H2O2。H2O230~40mL,COD90%。2.1.2Fe2+CODpH4,H2O240mL,n(H2O2)∶n(Fe2+),COD,2。2,Fe2+,H2O2,。COD,n(H2O2)∶n(Fe2+)=20。2.1.3pHCODH2O240mL,n(H2O2)∶n(Fe2+)=20,pH2、3、4、5、6,pHCOD,3。3,pHCOD,pHCOD92%~96%,pH5~6COD。,pH,。pH,H+Fe2+,,。pH=6,COD2400mg/L100,1COD/(mg·L-1)B/C/(mg·L-1)pH/(mg·L-1)//(mg·L-1)40000~500000.10~0.165200~55008.88200~8600200001500~160057——2010-11,30(11)[](1980—),2010,,。:15991657440,E-mail:hybos2000@126.com。[]2010-07-08()COD95.72%。2.22.2.1pHFenton,COD2400mg/L,4000mg/L100,pH9、10、11、12,,40℃,3h,4。4,pH,pH,pH10,60%。,pH,,pH11,〔6〕。,pH11。2.2.2pH11,20、30、40、50、60℃,,,3h,5。5,pH。,,。,,,60℃。pH=11、60℃,88%,483mg/L;B/C=0.55,。,Fenton+,。3(1)Fenton:100mL,H2O240mL、n(H2O2)∶n(Fe2+)=20、pH=6,COD95.72%95%。(2)Fenton:60℃、pH=11,88%。(3)Fenton,COD、2000mg/L、100483.2mg/L,B/C=0.55,。[][1]GuedesAMFM,MadeiraLMP,BoaventuraRAR,etal.Fentonoxidationofcorkcookingwastewater:overallkineticanalysis[J].Wa-terResearch,2003,37(13):3061-3069.[2],,,.Fenton/[J].,2006,2007,27(11):2201-2205.[3]ChamarroE,MarcoA,EsplugasS.UseofFentontoimproveorganicchemicalbiodegradability[J].WaterResearch,2001,35(4):1047-1051.[4],,,.Fenton[J].,2007,27(7):1101-1106.[5],.[M].:,2006:14-16.[6],,.[J].,2008,2(8):1062-1065.58——