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1998,18(4):353～355 ChinaEnvironmentalScience (,100084)MathiasErnst (,) 。DOC,,,。52mg/L,。 Treatingthenanofiltrationconcentrateofatertiaryeffluentfromamunicipalwastewatertreatmentplantbyozonationandaerobicbiotreatment.JianXingchao,WuTianbao(InstituteofNuclearEnergyTechnology,TsinghuaUniversity,Beijing100084);MathiasErnst(DepartmentofWaterQualityControl,TechnicalUniversityofBerlin,Berlin).ChinaEnvironmentalScience.1998,18(4):353～355Abstract—Thenanofiltrationconcentrateofeffluentfrommunicipalwastewatertreatmentplantwasdifficulttobebiotreateddirectly.TheinfluenceofoxidationbyozoneonthemolecularweightdistributionoftheDOCofthenanofiltra-tionconcentratewasstudied.Duetotheozonation,thepercentageofsmallmoleculesincreasedwhiletheUVadsorptionof254nmand436nmdecreasedmuchmorethantheDOC.Asaresultfromthisbehavior,thebiodegradabilityoftheoxi-dizedconcentratewasenhanced.Theconsecutiveaerobicbiotest(ZahnWellenstest)showedthatwhentheozonedosagewasaround52mg/L,itcouldimprovethebiodegradabilityofthisnanofiltrationconcentratetooptimum,ifcomparedwiththeDOCreductionofthedirectozonemineralization.Keywords:nanofiltrationconcentrate ozonation aerobicbiotreatment ,,〔1〕。,(138～827kPa),〔2〕。。2/3、4/5,90%,1986〔3〕。,Ruh-leben,DOC1～2mg/L。,,DOC25～32mg/L。,,。,,。。,。。1 1.1 Ruhleben。100mL,110℃,24h,。10.7g/L,,:50mL,,:1997-08-205min,,,,,,,。1.2 Ruhleben,5.7m/h,DesalDK-50.7MPa,80%。。6L100mm,,70～90min。,250mL。1.3 250mL,0.1g/L,1mL,MgSO4,CaCl2,FeCl30.2mL。4:(1):21.75gK2HPO4,23.83gNa2HPO4,0.5gNH4Cl,6.6gKH2PO41L;(2)22.5gMgSO4·7H2O1L;(3)27.5gCaCl21L;(4)0.25gFeCl3·6H2O1L。pH,10%NaOH1∶5pH7.5。20℃,,。14d,,3d,,pH7.5,7d50mL,0.45μmDOC,UV。,14dDOC,UV。,。,(mg/L)DOC(DOC0,mg/L)。,YM1,YM3,YM10。1000、300010000。2 ,。1UV,DOC,UV254254nm,C=C,C=O,、、,,UV254。UV436,。,,DOC。1 Table1 Theozonationresultsofnanofiltrationconcentrate(mg/L) DOC(mg/L)UV254(1/m)UV436(1/m)0031.080.44.2115.40.529.543.20.9628.60.9227.428.00.6141.81.3525.121.20.4452.51.6923.217.10.2662.32.0121.314.70.2671.72.3119.412.40.0888.52.8515.99.30.02110.73.5711.25.70.01128.84.169.34.40.01 2,3100mg/L,YM1、YM3、YM10,DOCUV254DOC(DOC0)UV254(UV254-0)。100mg/L,1000DOC35%49%,40%,UV25428%52%,86%。UV254,354 18,,1000UV254DOC,,,。2 DOC/DOC0Table2 ThechangeofDOC/DOC0byozonation(%)100mg/L(%) 100035491000～300040263000～10000109 1000015163 UV254/UV254-0Table3 ThechangeofUV254/UV254-0byozonation(%)100mg/L(%) 100028521000～300038343000～10000161 100001813 。1DOC0DOC;DOC0d,DOC;DOC7dDOC14d7d14dDOC。D7D14DOC0d～DOC7dDOC0d～DOC14d,DOC。。11.69,D7D14,。。1,,,,7d,。,7dDOC5.8mg/L,1.69,7dDOC15.8mg/L,172%。1 Fig.1 Ozonationimprovedtheeffectofaerobictreatment3 3.1 ,,。3.2 ,1.69,52mg/L,。1 AmyGaryL,AllemanBruceC,CluffCBrent.Removalofdis-solvedorganicmatterbynanofiltration.JournalofEnvironmen-talEngineering,1990,116(1):200～2052 WatsonBM,HornburgCD.Low-energymembranenanofil-trationforremovalofcolor,organicsandhardnessfromdrink-ingwatersupplies.Desalination,1989,72(1～2):11～223 CluffCBrent.Slowsand/nanofiltrationtreatmentforsec-ondarytreatedwastewater.Desalination.1992,88(1～3):53～67 ,19734。。“”,“”。1,1,6。3554 :