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26820068 ActaScientiaeCircumstantiaeVo.l26,No.8Aug.,2006:(1968—),,(),E-mail:tangww@mai.ltongj.iedu.cn;*()Biography:TANGWenwei(1968—),male,associateprofessor(Ph.D.),E-mail:tangww@mai.ltongj.iedu.cn;*Correspondingauthor,,.2006.[J].,26(8):1265-1270TangWW,ZengXP,HuZH.2006.StudyofFenton′sreagentandwethydrogenperoxideoxidationfortreatmentofemulsifiedwastewater[J].ActaScientiaeCircumstantiae,26(8):1265-1270唐文伟1,曾新平2,*,胡中华11.同济大学化学系,上海2000922.同济大学生命科学与技术学院,上海200092:2005-10-24 :2006-05-12 :2006-06-02:,COD50540mgL-1,H2O2/COD2.0,Fe2+/COD0.075,COD91%;,.,H2O2,(Fe2+50mgL-1),150℃COD82.4%;(H2O2/COD=0.05),120℃COD52.0%,.:;;;,COD:0253-2468(2006)08-1265-06 :X703 :AStudyofFenton′sreagentandwethydrogenperoxideoxidationfortreatmentofemulsifiedwastewaterTANGWenwei1,ZENGXinping2,*,HUZhonghua11.DepartmentofChemistry,TongjiUniversity,Shanghai2000922.SchoolofLifeScienceandTechnology,TongjiUniversity,Shanghai200092Received24October2005; receivedinrevisedform12May2006; accepted2June2006Abstract:Fenton'sreagentwasappliedtotreatemulsifiedwastewateratroomtemperature.Theoptimalconditionsforthetreatmentwereinvestigated.Asaresult,whentheCODis50540mgL-1intheinflow,theoptimalparameterswere2.0and0.075forH2O2/COD(w/w)andFe2+/COD(w/w),respectively.TheCODcouldberemovedbyapproximately91%.Aninductiveperiodwasobservedintheprocess.Apparentkineticsoffirstorderwasusedtoexplainfastandslowoxidationprocess,respectively.Furthermore,theroleofH2O2wasstudiedinthewetairoxidationprocess,wheretheairairwasreplacedpartiallyorcompletelybyH2O2.Thedosageofferrousion(50mgL-1Fe2+)wassignificantlydecreasedduetotheadditionofH2O2;theremovalefficiencyforCODis82.4%at150℃.TheCODremovalreached52.0%at120℃byusingH2O2(H2O2/COD=0.05)astheinitiator,suggestinganeffectivelycatalyticoxidation.Keywords:Fenton'sreagent;hydrogenperoxide;wetairoxidation;emulsifiedwastewater;COD1 (Introduction)(Fenton'sreagent)OH(Wallingetal.,1973;Linetal.,1998),.OH(2.80V),OH,(Tangetal,1997;Zazoetal.,2005).、、pH.,,,pH2.0~4.0.,(COD:53570~74110mgL-1,BOD5/COD:0.072~0.124).//()--,,,DOI:牨牥牨牫牰牱牨牤jhjkxxb牪牥牥牰牥牳牥牥牱 26.-,,,,.(Tangetal.,2003;,2004a;2004b),(wetairoxidation,WAO),,2.,,,,,.,H2O2,.2 (Methods)2.1 实验装置1.1 (1.N2,2.O2,3.,4.,5.,6.,7.,8.,9.,10.,11.,12.,13.)Fig.1 ExperimentalequipmentofWetHydrogenPeroxideOxidation(1.N2,2.O2,3.Pressurereliefvalve,4.Inputgasvalve,5.Outputwatervalve,6.Condenser,7.Inputwatervalve,8.Stirrer,9.Autoclave,10.Thermocouple,11.ElectrilcCooker,12.PressureMetre,13.Contoller)FYX-2a(2L),、、、.,.(±2℃).,,..,,.2.2 废水水质和试剂.COD50540mgL-1,pH9.35.Fe2+FeSO47H20(),(30%)..2.3 实验过程,,.Fe2+、H2O2pH,1.1Table1 Orthogonalexperimentconditionsoffenton’sreagentoxidationρH2O2/ρCODFe2+/CODpH11.00.053.022.00.106.033.00.159.0.250mL,200mL.pH,Fe2+,(100rmin-1),2h10mL.2.:pH2.0、3.0、4.0、6.0、7.09.35,Fe2+Fe2+/COD(,)0.025、0.05、0.075、0.10、0.125、0.15,H2O2/COD(,)0.5、1.0、1.5、2.0、3.0、4.0,0.5、1.0、1.5、2.0、3.0、4.0h;,:pH,H2O2/COD2.0,Fe2+Fe2+/COD0.1,2h。.400mL,Fe2+(Fe2+0、10、25、50、100、200mgL-1,50mgL-1),.,H2O2/COD2.0,,(25℃).,H2O2/COD0.05,,0.98MPa(25℃).200V,(90、110、130、150、170℃)500rmin-1,12668:1h2h10mL.2.4 水质分析方法COD;pHpHS-3DC();TOC(TOC-500,).2.5 数据分析方法kCOD,(,1996).3 (Results)3.1芬顿试剂常温下处理效果3.1.1 正交实验结果 2,,H2O2/CODpHFe2+/COD;k,H2O2/COD,COD,k,H2O2/COD2.0.Fe2+/COD0.1、pH.pH3.0,,,pH2.5,pH.2(k2hCOD)Table2 Orthogonalexperimentresultsoffenton’sreagentoxidationH2O2/CODFe2+/CODpHCOD11.00.053.036.5%21.00.106.086.1%31.00.159.081.3%42.00.056.089.3%52.00.109.088.8%62.00.153.086.8%73.00.059.093.4%83.00.103.089.7%93.00.156.088.3%k168.073.171.0k288.388.287.9k390.585.587.8R22.515.116.93.1.2单因素实验结果 ,2h,2.2 COD(a.pH,b.Fe2+,c.H2O2,d.)Fig.2 TheinfluenceofreactionconditiontoCODremovalrate(a.pHofinflux,b.throwingquantityofFe2+,c.throwingquantityofH2O2,d.reactiontime)1267 26 pHCOD2a.,(H2O2/COD)2.0、(Fe2+/COD)0.075,pH2.00~9.35COD,pH(9.35),,pH.COD2b.,(H2O2/COD)2.0,(Fe2+/COD)0.075COD,89.9%,.COD2c.,(Fe2+/COD)0.075、(H2O2/COD)2.0,COD(91.0%),,1.5.COD2d.,(H2O2/COD)2.0、(Fe2+/COD)0.075,,30min,COD1h,1.5h,--3,2h.3.2 湿式过氧化氢氧化H2O2,2h,1h,3.3 Fe2+Fig.3 TheinfluenceofthrowingquantityofFe2+andtemperaturetoCOD(TOC)removalrate 3a.,150℃,,Fe2+,CODTOC,Fe2+50mgL-1COD,82.4%,220℃(,2004a),CODTOC.,CODTOC.COD3b.,(90℃~170℃),,130℃~170℃.90℃COD76.4%,200℃COD(75.4%)(,2004a).H2O2H2O2-Fe2+.:H2O2/COD()5%,Fe2+50mgL-1,2h,120℃COD52.0%,,,180℃COD7.5%,.4 (Discussion)4.1芬顿试剂常温处理的影响因素和动力学分析CODpH,,pH.,(Fe2+/COD)0.075,COD;,,,12688:,,.(H2O2/COD)2.0,1.5,,,.,COD,OH,.COD,,COD.,:dCdt=-kiClnCC0=-kit(1),ki,dC,COD(mgL-1),ln(C0/C)-t,ki.2d,4.,9,,2h.4 ln(COD0/COD)~tFig.4 ln(COD0/COD)~t4.2 湿式过氧化氢氧化150℃,50mgL-1COD,220℃WAO,,CODTOC,;COD,,;,,.COD:,,,,.5%H2O2H2O2-Fe2+120℃,COD52.0%,,OH,,,WAO.5 (Conclusions)1)COD50540mgL-1,H2O2/COD()2.0,Fe2+/COD()0.075,2hCOD91%,H2O2.2),--3.3),50mgL-1Fe2+、150℃,COD82.4%,220℃,.(H2O2/COD=0.05)()120℃COD52.0%,.:(1969—),,,,E-mail:zengxp@mai.ltongj.iedu.cn,Tel:021-65983595.:,.References:ChenK.1996.Experimentaldesignandanalysis[M].Beijing:Tsing-HuaUniversityPress,94—102(inChinese)LinSS,GurolMD.1998.Catalyticdecompositionofhydrogenperoxideonironoxide:kinetics,mechanismsandi
本文标题:芬顿试剂和湿式过氧化氢氧化法处理乳化液废水研究唐文伟副本
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