臭氧和好氧生物法处理污水处理厂出水的纳米过滤浓缩液蹇兴超

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　　　　　　　: