典型南方水强化混凝有机物分级处理研究刘海龙

1,2,1,1,1,3(1.,　100085;2.,　030002;3.,　518031):,,DBP.()PAM;DAX-8,、.UV254,90%;,66%35%;,45%;TOC.:;PACl;PAM;:X703.1　:A　:0250-3301(2006)05-0909-04:2005-03-23;:2005-06-13:(863)(2002AA601120);(20377047):(1971～),,,,.EnhancedCoagulationandNOMFractionationStudyofaTypicalSouthernWaterLIUHai-long1,2,XIAZhong-huan1,WANGDong-sheng1,TANGHong-xiao1,ZHANGJin-song3(1.StateKeyLaboratoryofEnvironmentalAquaticChemistry,ResearchCenterforEco-EnvironmentalSciences,ChineseAcademyofSciences,Beijing100085,China;2.SchoolofEnvironmentalScienceandResource,ShanxiUniversity,Taiyuan030002,China;3.ShenzhenWaterGroupCo.Ltd.,Shenzhen518031,China)Abstract:Systematicstudiesonenhancingnormaltreatmentprocesseswereperformedinordertoremoveaquaticorganicmattereconomicallyandefficiently.Enhancedcoagulationandpolymercoagulant-aidcoagulationwerecomparedthroughjartestsandon-spotexperiment(Pilot-scaleandfull-scaleexperiment).FractionationsofrawwaterandwateraftertreatmentsofabovetwostrategieswereperformedbasedonselectiveadsorptionofresinDAX-8.ItwasfoundthatmatterscausingUVabsorbanceat254nmwerewellremovedbyabovetwotreatments;removalsofwhichcouldbeachieved90%ormore.Hydrophobicbasesandacidsfractionsweremoreremovedunderenhancedconditionswithremovals66%and35%respectively;whilehydrophilicfractioncouldbebetterremovedbyabout45%usingpolymercoagulantaids.Butthewholeremovalsofthetwostrategieswerealmostequal.Keywords:enhancedcoagulation;PACl;PAM;fractionation　　(NOM),.、、,;,DBP(Dis-infectionby-product)THMs、HAAs[1～3].DBP,、DBP,TOCDBP.,pH,,,()[4～6],.,,、,DBP(bestavailabletechnology,BAT).,,pH,、,、.,.;,、、4;,.,,;,90%.27520065　　　　　　ENVIRONMENTALSCIENCEVol.27,No.5May,2006DOI:10.13227/j.hjkx.2006.05.016Ⅱ,Ⅱ.“、、”,、.“、、、”;().1　1.1　:DAX-8;:2.5cm、50cm;;-;;TOC;:.NaOH,HCl.:2003-11,、pH、、、TOC;,0.45μm,,.1.2　:1.0～1.5mg/L;、.:,1L,0.5、1.0、2.0、3.0、4.0、5.0mL;PAM0.1mg/L、1min;:250r/min2min、40r/min15min、20min.,、TOC、UV254;,[1,6,8].:0.45μm,200mL/h80mLDAX-8,(Hob)(Hon);HClpH2.0,160mLDAX-8,(Hoa),(Hi).TOC、UV254,.,90%～110%.、,、DOC、UV254;,DOC、UV254.2　2.1　.,1.,2～4mg/L;TOCPACl.TOC1～5mg/L(12%～30%),5mg/L,,TOC31%.,(1～4mg/L);,TOC(2.0mg/L).:,TOC,20%30%.PAM1[9],,　　　　1　PAMFig.1　CharacteristicsofcoagulationwithadditionofPAM910　　　　　　27,,,2,、.10%,,PAM(10%),,.,PAM,、、、、、,.,,0.366mg/L0.168mg/L.,,;TOC,.、.2.2　,2.2　Fig.2　Fractionsoforganicmatterinrawwater:2.0mg/L2.0mg/L1min0.1mg/LPAM.1.3.1　Table1　TreatmentmethodsandresultsPACl/mg·L-1PAM/mg·L-1/NTUTOC/mg·L-12.001.891.142.00.11.781.093　Fig.3　FractionsofDOC　　3,,30%～40%,(15%～20%);2,;,,、;、,(28%)(66%);(4).PACl;PAM,PAM,[10],(Hi、Hon),PAM、,[2],,,(Hoa、Hob).4　Fig.4　DOCRemovalsofdifferentfractionsaftertreatment　　UV2545.254nm,9115　　　　　　;UV254TOCTHMs[7].UV254,50%;DOC(30%～40%).SUVA(SpecificUltravioletAbsorbance)2.5　UV254Fig.5　FractionsofUV254aftertreatment2　SUVATable2　SUVAofrawwaterandfractionsaftertreatmentSUVAPACl3.211.11.1+4.3253.61.83.272.60.560.050.12　　Edzwald,SUVA3.21,2SUVA4、;.,SUVA4.32,、,.66%,(28%).,SUVA2.0,:.,2;TOC.SUVA3.211.1,UV254[6,9].,UV254:UV254,,UV254;,TOC;2UV254;,DOCUV254,.3　　　(1)、,SUVA,.(2),30%;(10%),,,,TOC.(3),,28.57%～68%;;PAM;、;2UV254.:[1]ChristianVolk,etal.Impactofenhancedandoptimizedcoagulationonremovaloforganicmatteranditsbiodegradablefractionindrinkingwater[J].Wat.Res.,2000,34(12):3247～3257.[2]JamesKEdzwald,JohnETobiason.Enhancedcoagulation:USrequirementsandbroaderview[J].Wat.Sci.Tech.,1999,40(9):63～70.[3]StuartWKrasner,GaryAmy.Jar-testevaluationsofenhancedcoagulation[J].JAWWA,1995,87(10):93～106.[4]MarcEdwards.PredictionDOCremovalduringenhancedcoagulation[J].JAWWA,1997,89(5):78～89.[5]KirstenN,ExallGary,VanloonW.Usingcoagulatantstoremoveorganicmatter[J].JAWWA,2000,92(11):93～102.[6]KimberlyBell-Ajy,MortezaAbbaszadegan,etal.ConventionalAndOptimizedCoagulationForNomRemoval[J].JAWWA,2000,92(10):44～58.[7]JamesKEdzwald,WilliamCBecker,KevinLWattier.SurrogateparametersformonitoringorganicmatterandTHMprecursors[J].JAWWA,1985,77(4):122～133.[8]CroueJP,MartinB,etal.Isolationandcharacterizationofdissolvedhydrophobicandhydrophilicorganicsubstancesofareservoirwater[J].JAWWA,1994,86(12):73～81.[9],.[M].:,1999.[10]..[M].:,2000.912　　　　　　27