典型南方水源溶解性有机物分子量分布变化及去除特性乔春光

27220072　　　　　　ActaScientiaeCircumstantiaeVo.l27,No.2Feb.,2007:(863)(No.2002AA601120);(No.50578155,No.20577060)SupportedbytheHigh-TechResearchandDevelopmentProgramofChina(No.2002AA601120)andNationalNaturalScienceFoundationofChina(No.50578155,No.20577060):(1982—),,;*(),E-mail:[e-mail]:QIAOChunguang(1982—),female;*Correspondingauthor,E-mail:[e-mail],,,.2007.[J].,27(2):195-200QiaoCG,WeiQS,WangDS,etal.2007.MolecularweightdistributionandremovalcharactersofDOMinthetypicalsourcewaterinsouthofChina[J].ActaScientiaeCircumstantiae,27(2):195-200乔春光1,魏群山1,王东升1,*,杨敏1,魏洽2,李明俊21.中国科学院生态环境研究中心环境水质学国家重点实验室,北京1000852.南昌航空工业学院环境与化学工程系,南昌330034:2006-04-29　　　:2006-11-29:(DOM),20053～9DOM,DOM(THMFP).,DOM,1000(41.15%(DOC)),DOM,THMFP32.23%.,DOCTHMFP.DOC104～3×104(24.07%),THMFP29.09%,.:;THMFP;DOM;;:0253-2468(2007)02-0195-06　　　:X522　　　:AMolecularweightdistributionandremovalcharactersofDOMinthetypicalsourcewaterinsouthofChinaQIAOChunguang1,WEIQunshan1,WANGDongsheng1,*,YANGMin1,WEIQia2,LIMingjun21.StateKeyLaboratoryofEnvironmentalAquaticChemistry,ResearchcenterforEco-EnvironmentalSciences,ChineseAcademyofSciences,Beijing1000852.DepartmentofEnvironmentalandChemicalEngineering,NanchangInstituteofAeronauticTechnology,Nanchang330034Received29April2006;　　　accepted29November2006Abstract:Theapparentmolecular-weight(MW)distributionofdissolvedorganicmatter(DOM)inShenzhenreservoirsuppliedbyDongjiangriverwasstudiedbyultra-filtrationmethod.AndthevarietyofapparentMWoftheDOMandtherelationshipbetweenapparentMWandtrihalomethaneformationpotential(THMFP)werealsoinvestigatedwiththewatersamplesduringtheperiodfromMarch2005toSeptember2005.Asshowedintheresults,theanapparentMWlowerthan1kDahadthelargestratiointhetotalDOC(dissolvedorganiccarbon)ofthewater,withthemedialvalueof41.15%,wheretheaveragepercentageofTHMFPis32.23%.Whereastheconventionalandadvancedtreatmentprocessescannotremovetheorganicseffectively.TheratiooftheorganicswithanapparentMWin10k-30kDawas24.07%inthetotalDOC,andanaverage29.09%inwhichwasthetotalTHMFP.Theconventionalprocessescanremovetheseorganicseffectively.Keywords:MWdistribution;THMFP;DOM;ultra-filtration;physicalfractionation1　(Introduction),(DOM),(Frimmeletal.,1998),.,DOMDOI:牨牥牨牫牰牱牨牤jhjkxxb牪牥牥牱牥牪牥牥牬　　　　　　　　　　27(THMs)(DBPs)(Imaietal.,2001).,,DOM,(LeChevallieretal.,1987),.,(,2003).,,(Changetal.,2001).、DOM,DOM.THMs2,(Sizeexclusionchromatography,SEC)(Ultra-filtration,UF)(Alexetal.,2005).UF,,.,UF,,,.,DOMDBPs,DOMDBPs.,DOMTHMs(Alexetal.,2005),,,DOM.,THMs,DOMTHMs.DOMTHMFP,.2　(Materialsandmethods)2.1　材料和仪器　　UV254Cary100Scan(Varian),1cm.TOCPhoenix8000(Tekmar-Dohrmann)/,,TOC550℃.THMsAutosystemXL(PE);:0.32mm×30m×0.25μm,OV-17.2.2　实验方法2.2.1　取样方法　,,1d.0.45μm,,(0.45μm———).2.2.2　膜分级分离方法　,DOM45:103,103～3×103,3×103～104,104～3×104,3×104.NaOHHNO3,.0.45μm(Amicon8200,Millipore),0.1～0.35MPa,TOC、UV254THMFP.,:0.45μmYM3×104YM104YM3×103YM103.MilliporeYM,,30000、10000、3000、1000,63.5mm,,4℃.MilliporeAmicon8200,180mL,28.7cm2,0.53MPa,,.1962:2.2.3　THMFP测定　EPAstandardmethods5710(APHAetal.,1995),5.32mgL-1;pH7,pH7,DOC;7d,DPD,3～5mgL-1;EPA6232B-(ECD),,(12mL),500～550℃;()1∶10().THMFPEPA5710B1CHCl3(μgL-1).3　(Results)3.1　原水DOC的变化特征200539,DOC,1.1,DOC,.5～7DOC.1　DOCFig.1　DOCofsourcewaterindifferentsamplingtime3.2　原水DOM物理分级特征22005.DOC,,104～3×104103(56.91%～74.69%).104DOC,31.09%～39.23%.,103(41.15%);104～3×104(24.07%);32　2005DOMFig.2　ThephysicalcharacterizationandfractionationoftheDOMfromShenzhenreservoirindifferentmonthsof2005.47,,;8,103.1(320325),DOC,(53.98%)103,103～3×103、3×103～104.3.3　THMFP特性7、8、9DOMTHMFP,3.3,103103～3×103THMFP,25.69%～36.61%、19.95%～34.98%.3×103～104THMFP14.33%～17.74%,.104THMFP62.83%.3　DOMTHMFPFig.3　ThepercentagecontentofTHMFPofthevariousMWfractionsindifferentmonths197　　　　　　　　　　273.4　水厂处理工艺对不同分子量范围有机物处理效果3.4.1　常规工艺　---,.4a,104DOM,,75.56%.104DOC,31.09%～39.23%.,.104,1,,,1%.104(65.91%),,DOC,26.52%.,4b,104THMFP,40.76%.104,THMFP22.44%,　,THMFP27.74%.4　DOCTHMFPFig.4　DOCandTHMFPremovalresultsofthedifferentMWfractionsbyconventionalprocess1　DOCTable1　DOCtreatmenteffectsofconventionalprocessinwaterplantMolecularweightrangeRawwaterDOC/(mgL-1)DOCDistributionratioCoagulationDOC/(mgL-1)DOCDistributionratioFiltrationDOC/(mgL-1)DOCDistributionratio1040.4534.09%0.2935.56%0.1175.56%1040.8765.91%0.861.15%0.861.15%1.32100.00%1.1512.88%0.9726.52%3.4.2　深度处理工艺　→.5a,DOC,104～3×103DOM,104～3×103DOCDOC20.18%;,DOCDOC3.67%.1047.34%.3×103,3×103～1032.75%,1035.5%.5　DOCTHMFPFig.5　DOCandTHMFPremovaleffectofMWfractionsbyadvancedtreatment1982:THMFP5b,,103～3×103THMs,THMFP20%0.04%;3×103～103103THMs,104DOMTHMFP.,,DOMTHMFP18.41%.4　(Discussion)DOMDOC,DOC,104～3×1031032.(2001)(,DOM104～3×1031032).DOM,,.,THMFP2(103104～3×103)DOC.,104THMFPTHMFP,62.83%,,104THM,Collins(1985).,.,104,,,.,,,;,.DOM,.,,,,.2,,,,.,,DOCTHMFP,,.,103.,,.,,,(,2005).103,,,,,.5　(Conclusions)1),103DOC,41.15%,104～3×104.(20053～9)56.91%～74.69%,2DOM.2)DOMTHMFP,103104～3×103,25.69%～36.61%、19.95%～34.98%.104THMFPTHMFP62.83%,104THMs.3)104DOM,,DOC75.56%,THMFP40.76%.4)3×103～104DOM,DOC96.33%,　THMFP99.96%.:王东升,男,博士,副研究