赤泥协同Fenton法处理焦化废水的研究张乐观

5　5环境工程学报Vol.5,No.520115ChineseJournalofEnvironmentalEngineeringMay2011Fenton张乐观1,2　朱新锋1(1.,467044;2.,430074)　　Fenton,COD。、pH、、H2O2Fe2+,,20g/L、pH=3、80mmol/LH2O2、224mg/LFe2+,120min,COD93.5%。COD,Fe2+Fenton。,COD。　Fenton　　　X703.1　　　A　　　1673-9108(2011)05-1111-04StudyontreatmentofcokingwastewaterbyFentonprocesscombinedwithredmudZhangLeguan1,2　ZhuXinfeng1(1.DepartmentofEnvironmentandMunicipalEngineering,HenanUniversityofUrbanConstruction,Pingdingshan467044,China;2.SchoolofEnvironmentalScienceEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074,China)Abstract　TheFentonprocesscombinedwithredmudwasappliedfortreatmentofcokingwastewater.TheCODremovalrateinthesynergicprocesswashigherthanthatbothinFentonprocessandinredmudabsorptionprocess.Someimportantaffectingfactorswerediscussed.TheresultsshowthattheCODremovalratereachedto93.5%after120minundertheoptimizedconditions(thedosageofredmud:20g/L,initialpHvalue:3,theconcentrationofH2O2:80mmol/L,theconcentrationofFe2+:224mg/L).TheincreasingCODremovalinwastewaterresultsfromtheadsorptionofredmudandferrousirondissolvedfromredmudundertheacidiccondi-tion.Asanindustrialwaste,redmudpromotesCODremovalefficiencyincokingwastewater.Keywords　Fenton;redmud;cokingwastewater:2010-01-15;:2010-02-06:(1975～),,,,。E-mail:[e-mail]　　Fenton、,·OH,,(COD)[1]。FentonFe2+H2O2、[2],,Fenton、,UV/Fenton[3]、/Fenton[4]、-Fenton[5]。。1t1～1.8t()。、,,,。[6][7]。Fenton,。Fenton,Fenton,。。51　1.1　,,,,,pH7.2,COD1024mg/L,、、,。,80～100。:Al2O3(25.87%)、Fe2O3(11.94%)、SiO2(19.38%)CaO(19.46%),、、。1.2　:5B-1COD()、PHS-3CPH()、CARY50Probe-(Varian,)。:COD,H2O2[8]。COD:COD=[COD]0-[COD]t[COD]0×100%[COD]0COD,[COD]ttCOD。H2O2:H2O2=[H2O2]0-[H2O2]t[H2O2]0×100%[H2O2]0H2O2,[H2O2]ttH2O2。1.3　1.3.1　单独赤泥吸附实验500mL1000mL,pH3,,20g/L。,30minCOD。1.3.2　单独Fenton实验500mL1000mL,pH3,,FeSO4·7H2O,Fe2+168mg/L,30mmolH2O2。,pH3,,30minCOD。1.3.3　赤泥协同Fenton实验500mL1000mL,pH3,,FeSO4·7H2O,Fe2+168mg/L,20g/L,30mmolH2O2。,pH3,,30minCOD。25℃。2　2.1　FentonFentonCOD,3(、Fenton+Fenton),COD,1。1　CODFig.1　CODremovalindifferentsystems1,COD,120min,165.9mg/L,COD16.2%。Fenton,150min,COD60.4%。FentonCOD84.2%,。Fenton,。2.2　COD,5、10、15、20、3040g/L,COD,2。11125:Fenton2　CODFig.2　EffectofredmuddosageonCODremoval2,,COD。20g/L,COD,,,20g/L。2.3　H2O2COD,H2O220、40、60、80、100120mmol/L,H2O2COD,3。3　H2O2CODFig.3　EffectofH2O2dosageonCODremoval3,CODH2O2,H2O280mmol/L,86.3%,H2O2,。Fenton-,H2O2Fe2+·OH,,·OHRH,R·、,,CO2H2O。H2O2,H2O2·OH,H2O2,·OH,。H2O2,H2O2·OH,·OH,,H2O2。3,H2O280mmol/L,H2O2。H2O280mmol/L。2.4　Fe2+COD,Fe2+56、112、168、224、280336mg/L,Fe2+COD,1。1　Fe2+CODTable1　EffectofFe2+dosageonCODremovalFe2+(mg/L)COD(%)H2O2(%)5653.750.211268.262.716886.378.422493.591.428095.787.933696.482.51,Fe2+,H2O2COD,Fe2+224mg/L,COD93.5%,H2O2,Fe2+,COD,H2O2。Fenton,Fe2+·OH,Fe2+,·OH,。Fe2+,·OH,,[1]。Fe2+,CODH2O2。Fe2+224mg/L。2.5　pHCODFenton,,Fe2+H2O2·OH。,pH1、2、3、4、56,pHCOD,4。4,pHCOD。pH3,COD,pH,COD,[9]。pH,Fe3+111354　pHCODFig.4　EffectofpHonCODremoval,,·OH,H2O2,;pH3,Fe3+H2O2Fe2+·HO2,Fe2+·OHH2O2·OH,pH3。3　FentonFenton,COD。,、,,。,,[10],。,,、[11],,,H2O2·OH,。,(α-Fe2O3)(α-FeOOH),,Fe2+,Fenton。+FentonFenton。4　　Fenton,。,FentonCODFentonCOD,、pH、H2O2Fe2+:20g/L、pH=3、80mmol/LH2O2、224mg/LFe2+,120min,H2O289.6%,COD93.5%。。,Fe2+Fenton。Fenton,Fenton,。[1],,,.Fenton.,2006,26(S2):288-293[2],.Fenton.,2007,7(S1):104-107[3],,.UV-Fenton.,2007,1(7):71-74[4]ZhangHui,ZhangDaobin,ZhouJiayong.RemovalofCODfromlandfillleachatebyelectro-Fentonmethod.JournalofHazardousMaterials,2006,135(1-3):106-111[5],,,.-FentonPAEs.,2007,28(12):2734-2739[6]WeiweiHuang,ShaobinWang,ZhuZhonghua,etal.Phosphateremovalfromwastewaterusingredmud.JournalofHazardousMaterials,2008,158(1):35-42[7]édithP.,JeanF.B.,GuyM.Transformationofredmudfromaluminiumindustryintoacoagulantforwastewatertreatment.Hydrometallurgy,2008,92(1-2):16-25[8]ChaiX.S.,HouQ.X.,LuoQ.,etal.Rapiddetermina-tionofhydrogenperoxideinthewoodpulpbleachingstreamsbyadual-wavelengthspectroscopicmethod.Ana-lyticaChimicaActa,2004,507(2):281-284[9],,.Fenton.,2005,21(4):354-357[10],,,.Fe3+.,2009,29(8):28-31[11],,..,2007,26(1):143-1461114