化学沉淀Fenton法处理垃圾渗滤液的研究

/Fenton111,21(1.710032;2.710054)NH3-N,(MgNH4PO46H2O),:pH9.5NH4+Mg2+PO43-11.31,NH3-N76.7%,COD40.7%Fenton,:pH3210minFeSO47H2O0.04molH2O2/FeSO47H2O41,COD93.81%FentonNH3-NCODStudyontheTreatmentforLandfillLeachatebyChemicalPrecipitation/FentonProcessLIUWen-hui1WUqi1LIUZeng-chao1,2ZHENGXian-jun1(1.SchoolofMaterialsandChemicalEngineering,XianUniversityofTechnologyXian710032)AbstractThechemicalreactioniscarriedonasmagnesiaandphosphorylationmeetsNH3-Nintheleachateunderalkalineconditions,inwhichthesedimentofMgNH4PO46H2Oisproducedandtheleachateispre-treated.TheresultshowsthattheremovalrateofNH3-NandCODcanreach76.7%and40.7%respectivelyunderconditions,pH=9.5anddrugadditionratioNH4+Mg2+PO43-=11.31.Pre2treatmenteffluentisoxidizedbyFentonreagentandtheresultshowsthattheremovalrateofCODcanreachashighas93.81%withcondi2tions,pH=3,210minsofoxidationtime,thedosageofFeSO47H2O0.04mol,andtheadditionratioofH2O2/FeSO47H2O41.KeywordslandfillleachatechemicalprecipitationFentonremovalrateofNH3-NremovalrateofCOD,,,,[1],,,,[2],[3],Fenton[4-6]Fenton,,11.1,,,CODCr50028mg/L,NH3-N5714mg/L,2048(),pH8-9,1.2H2O2(30%),,,,,,,HCl,H2SO4,,:1.3:,,,,,,25,,,:pH;;CODCr;NH3-N1.42,500mL,HClNaOHpH,MgOH3PO4,NH3-N,,CODCrNH3-N2:,pH,H2O2FeSO4Fenton,,NH3-NCOD22.12.1.1pH300mL500mL,NaOH(HCl)pH:5.5,6.0,,12.0;n(NH4+)n(Mg2+)n(PO43-)=111MgOH3PO4,15min,,,CODNH3-N,11,pH,NH3-N,;pH9.5,,71.3%;pH,NH3-N,,COD342008345May2008IndustrialSafetyandEnvironmentalProtection1pHNH3-NCODpHNH3-N/(mgL-1)NH3-N/%COD/(mgL-1)COD/%5.56.06.57.07.58.08.59.09.510.010.511.011.512.03423321729262777253723262211199416401708177719712011204640.143.748.851.455.659.361.365.171.370.168.965.564.864.2401723887337671369713612034769321183151829667309173096731268316183206819.722.324.726.127.830.535.837.040.738.238.137.536.835.9pH,COD;pH9.5,COD,40.7%;pH,CODNH3-NCOD,MgOH3PO4NH3-N,MgNH4PO4MgNH4PO4,2.1.2MgO500mL300mL;pH9.5,n(NH4+)n(Mg2+)n(PO43-)=11.0111.11,,11.51MgOH3PO415min,,,CODNH3-N22MgOn(NH4+)n(Mg2+)n(PO43-)NH3-N/(mgL-1)NH3-N/%12345611.0111.1111.2111.3111.4111.5116401440136613311314130371.374.876.176.777.077.22,MgO,NH3-N;n(NH4+)n(Mg2+)n(PO43-)=11.31,NH3-N76.7%,MgO,NH3-NCO32-,Mg2+Mg2CO3,Mg2+NH4+PO43-,Mg2+,NH3-N2.2Fenton2.2.1pHFenton500mL300mL;pH2,3,,7;n(Fe2+)=0.02mol/L(FeSO47H2O5.56g),H2O2n(H2O2)n(Fe2+)=11(30%H2O22mL),150min,,COD,33,pH=3,COD(62.43%);3pHFentonpHCOD/(mgL-1)COD/%12345623456711843111461373815477154771900260.0862.4353.6947.8341.5135.95pH,CODFentonFe2+H2O2OH,,Fe2+,pH,Fe2+OH-Fe(OH)2,;pH,Fe(OH)3;pH,H2O2,COD2.2.2Fenton500mL300mL,pH3,n(Fe2+)=0.02mol/L(FeSO47H2O5.56g),H2O2n(H2O2)n(Fe2+)=11(30%H2O22mL),60min,90min,,240min,,,COD44Fenton/minCOD/(mgL-1)COD/%12345676090120150180210240141861331813412109351050579771182552.1855.1154.7963.1464.5973.1160.144,,COD;210min,COD,73.11%,210min2.2.3Fe2+Fenton500mL300mL;pH3;n(Fe2+)0.01mol/L,0.02mol/L,,0.05mol/L(FeSO47H2O2.78g5.56g8.34g11.12g13.90g),H2O2:n(H2O2)n(Fe2+)=11,210min,,,COD,55Fe2+Fentonn(Fe2+)/(molL-1)m(FeSO47H2O)/gCOD/(mgL-1)/%0.010.020.030.040.052.785.568.3411.1213.906948531950494392493376.1081.7082.6384.8983.035,Fe2+,COD;Fe2+0.04mol/L,COD,84.89%;Fe2+,CODFe2+H2O244(410083),,,,,ReviewonTotalAmountControlforAtmosphericPollutionLIANGYue-eHEDe-wenCHAILi-yuanWANGWei-liangQinyan(Dept.ofEnvironmentalEngineering,CollegeofMetallurgicalScience&Engineering,CentralSouthUniversityChangsha410083)AbstractThispaperdescribesseveralkindsofairpollutioncontrolmethods,especiallycomparestheapplicationscope,advantagesanddis2advantageofvariousevaluationmethods.Theanalysisandcomparisonshowsthateverykindhasitsadvantagesanddisadvantagesandintheapplicationtheadvantagesshouldbefullymadeuseof,theinadequanciesshouldbeimprovedandthelatesttechniquesinthesolvingprocessareintroduced.Keywordsatmosphericpollutantsvolumecontrolpollutioncontrol,,,,,,Fe2+H2O2Fe2+,OH,;Fe2+,Fe3+,,2.2.4H2O2/Fe2+Fenton500mL300mL;pH3;n(Fe2+)0.04mol/L,H2O2n(H2O2)n(Fe2+):11,21,,81,210min,,,COD,66H2O2/Fe2+Fentonn(H2O2)n(Fe2+)H2O2/mLCOD/(mgL-1)/%112141618124812165013484518363628387583.1083.6793.8187.7786.946,H2O2/Fe2+,COD;H2O2/Fe2+41,COD,93.81%;H2O2/Fe2+,COD,H2O2,OH,H2O2Fe2+Fe3+,Fe2+,H2O2,OH3(1)COD5714mg/L50028mg/L,,:pH9.5,n(NH4+)n(Mg2+)n(PO43-)=11.31,NH3-N76.7%,COD40.7%(2)Fenton,:pH3,210min,FeSO47H2O0.04mol,H2O2/FeSO47H2O41,COD93.81%[1],,..,2002,28(3):11-13.[2]..,2001,16(3):23-24.[3],..,1999(9):90-92.[4]Zong-pingWang,ZheZhang,Yue-JuanLin,etal.Landfillleachatetreatmentbyacoagulation-photooxidationprocess.JournalofHazardousMaterials,2002,B95:153-159.[5].Fenton.,2000,21(3):93-96.[6],.Fenton.,2003,16(3):26-28.,1977,,,,(:2007-10-23)542008345May2008IndustrialSafetyandEnvironmentalProtection