不同预氧化剂对黄浦江原水氯胺化DBPs生成潜能的影响

4510()Vol.45No.10201410JournalofCentralSouthUniversity(ScienceandTechnology)Oct.2014()DBPs(200092)3(ClO2)(KMnO4)(Cl2)(DBPs)3DBPsClO2Cl2KMnO429.07%8.08%20.14%ClO2KMnO4Cl2ClO2Cl23DBPsClO2Cl2KMnO414.96%7.51%32.99%KMnO4ClO2Cl2DBPsTU991.25A1672−7207(2014)10−3705−07Effectofdifferentpre-oxidantsonDBPsformationpotentialbychlorinationandchloraminationofHuangpuRiverrawwaterTIANFuxiang,XUBin,QINLang,RONGRong,ZHANGTianyang,ZHUHezhen,LINlin(KeyLaboratoryofYangtzeAquaticEnvironment,MinistryofEducation,StateKeyLaboratoryofPollutionControlandResourceReuse,TongjiUniversity,Shanghai200092,China)Abstract:Takingmicro-pollutedrawwaterfromHuangpuRiverinShanghaiasresearchobject,thereductionofchlorinationandchloraminationdisinfectionby-products(DBPs)formationpotentialwithpre-oxidationbythreekindsofcommonpre-oxidants,includingpotassiumpermanganate,chlorineandchlorinedioxidewasdiscussed.TheresultsshowthatalltheselectedoxidantscanreduceformationpotentialofchlorinationDBPstosomeextent,andthereductionpercentagesbyClO2,Cl2andKMnO4are29.07%,8.08%and20.14%,respectively.ThedecreasingorderofDBPscontroleffectfromstrongtoweakisClO2,KMnO4,Cl2.AstoHuangpuRiverrawwaterincaseofchlorinedisinfection,usingClO2aspre-oxidationagent,relativelyobviouseffectonremovalofDBPscanbeobtained.However,pre-chlorinationshouldbeavoidedduetoitsnotablepooreffect.ChloraminationresultsalsodemonstratethatreductionimpactsoftheseoxidantsonDBPs.AndreductionpercentagesbyClO2,Cl2andKMnO4are14.96%,7.51%and32.99%,respectively,whichrevealsbetterremovaleffectivenessofKMnO4overClO2andCl2.Keywords:pre-oxidation;HuangpuRiverrawwater;chlorination;chloramination;DBPs2013−10−202013−12−02(Foundationitem)(51278352,51478323)(2012ZX07404,2012ZX07408001)(Projects(51278352,5148323)supportedbyNationalNaturalScienceFoundationofChina;Projects(2012ZX07404,2012ZX07408001)supportedbyNationalMajorScienceandTechnologyProjectofChina)(1976−)13918493316E-mail:[e-mail]()453706DBPs[1−2](ClO2)(Cl2)(KMnO4)KMnO4(MnO2)KMnO4KMnO4(CF)(CCl4)[3]ClO2pHClO2THMs[4]ClO2[5]DBPs[6]DBPs[7−8][9][10]THMs20.1%HAAs10%HANs2%1.5%1%(N-DBPs)[11−12]THMsHAAs[13],76.3%[14−15]DBPs3DBPs11.1()(52g/L)Sigma-Aldrich(MTBE)J.T.Baker(USA)Milli-Q(ReferenceMillpore)()1(THMs1,2-1,2--3-10)N-DBPsC-DBPs(1,1-1--1-1,1,1-)Sigma-Aldrich0.3%TwinOxide®(DeTongelreep,Netherlands)2250mL99.9%[16]1:1.25()[17−18]DPD[19]DBPs25(THMs)(HKs)(HANs)(TCNM)GC-ECDEPA502.1EPA551.1[20]GC2010HP5(30m0.25mm0.25μmJ&W)10()DBPs37071Table1SomewaterqualityparametersofHuangpuRiverrawwaterρ(DOC)/(mg·L−1)σUV254/cm−1λ(SUVA)/(L·mg−1·m−1)ρ(Br–)/(μg·L−1)3.920.1112.8317.0:λ(SUVA)=100σUV254/ρ(DOC)1.21.2.1(ClO2)(Cl2)(KMnO4)0.05mol/L0.45μm300r/min30min80r/min5minNaS2O30.45μm1.2.20.45μm50mL()()(mg/L)(1)((2))10mmol/LpH7±0.01−45mLDBPs257d)NNH(8)DOC(3)Cl(4210)NO(52(1))NNO(5)DOC(3)ClNH(24(2)22.1DBPsClO2Cl2KMnO4DBPs1~51THMsFig.1Effectofdifferentpre-oxidantsonformationofTHMsfromchlorinationofrawwaterfromHuangpuRiver21,1,1-Fig.2Effectofdifferentpre-oxidantsonformationof1,1,1-TCPfromchlorinationofrawwaterfromHuangpuRiver13(CF)(BDCM)(DBCM)THMsDCBNDBCNCFCF264.10μg/LClO2Cl2KMnO4THMs27.39%11.95%23.87%THMsClO2KMnO4Cl2CF()453708[21]THMsClO2KMnO4THMs3C-DBPsFig.3Effectofdifferentpre-oxidantsonformationofotherC-DBPsfromchlorinationofrawwaterfromHuangpuRiver21,1,1-21,1,1-TCP1,1,1-TCP16.81μg/LClO2Cl2KMnO411.0415.0912.31μg/L34.31%10.22%26.76%1,1,1-TCPClO2KMnO4Cl2333Cl2KMnO4ClO2ClO2Cl2KMnO4N-DBPs4DCANTCNMClO2KMnO4DCAN20.50μg/L4.23μg/L15.48μg/L79.50%24.50%ClO2Cl2DCAN32.72μg/LClO24N-DBPsFig.4Effectofdifferentpre-oxidantsonformationofN-DBPsfromchlorinationofrawwaterfromHuangpuRiver5DBPsFig.5Effectofdifferentpre-oxidantsonformationofDBPsfromchlorinationofrawwaterfromHuangpuRiverDCAN(NOM)DCANCl2ClO2TCNMClO2Cl213.91μg/L14.17μg/L15.98μg/LKMnO413.01μg/LClO2Cl22TCNMKMnO410()DBPs3709ClO2Cl2KMnO4DBPs55C-DBPsC-DBPs570.05μg/LClO2Cl2KMnO4410.33506.94454.26μg/LClO228.02%Cl211.07%KMnO420.31%N-DBPsClO2KMnO434.41μg/L14.17μg/L13.01μg/L58.82%62.19%N-DBPsDCAN2DBPs604.46μg/LClO2Cl2KMnO4428.73555.64482.74μg/L29.07%8.08%20.14%ClO2KMnO4Cl2DBPsN-DBPsCl2ClO22.2DBPsClO2Cl2KMnO4DBPs6~96THMsFig.6Effectofdifferentpre-oxidantsonformationofTHMsfromchloraminationofrawwaterfromHuangpuRiver7C-DBPsFig.7Effectofdifferentpre-oxidantsonformationofotherC-DBPsfromchloraminationofrawwaterfromHuangpuRiver6CFDCBNDBCNTHMs64.76μg/LClO2Cl2KMnO4THMs52.8261.2843.44μg/L18.43%5.37%33.09%KMnO4ClO2Cl2KMnO4THMs41,1,1-TCP7C-DBPs7ClO2Cl2KMnO40.90μg/L0.680.770.57μg/L0.95μg/L0.730.940.41μg/L1.11μg/L0.850.910.73μg/L3C-DBPsCl2ClO2KMnO48DCANTCNM8ClO2Cl2KMnO4DCAN1.28μg/L0.581.190.32μg/LTCNM()4537108N-DBPsFig.8Effectofdifferentpre-oxidantsonformationofN-DBPsfromchloraminationofrawwaterfromHuangpuRiver9DBPsFig.9Effectofdifferentpre-oxidantsonformationofDBPsfromchloraminationofrawwaterfromHuangpuRiverClO27.75μg/L9.61μg/LCl2KMnO45.89μg/L6.06μg/LClO2Cl2KMnO4N-DBPsKMnO4DCANC-DBPsN-DBPs99KMnO4C-DBPs67.73μg/L45.05μg/L33.49%Cl25.64%ClO218.69%N-DBPsCl2KMnO49.03μg/L7.08μg/L6.38μg/L21.59%29.35%ClO210.20μg/L2DBPs76.76μg/LClO2Cl2KMnO465.2770.9951.4