超滤及其组合工艺对污水的深度处理试验王锦

超滤及其组合工艺对污水的深度处理试验王　锦1,　曹　宇2,　王晓昌1,　李志华1(1.,　710055;　2.,　710086)　:,-UF(PAC)-UF,,99%,、、。,,,。,,,。:;　;　;　;　:TQ028.8　　:A　　:1003-6504(2002)02-0014-03　　,。,[1～2]。,。,,-,-。1　1.1　试验装置1。10,(PAN),。-,。1　1.　2.　3.　4.　5.　6.　7.　8.　9.10.　11.:(1973-),,,。1.2　试验方法。:;-,(Al2(SO4)3·18H2O),7mg/L,,,1min,G10s-1,,ζ0mV,pH7。(PAC)-,150～160,100μm,(0.85mm),,25mg/L,1h。,(30min,4min)(15min,2min)。。(NaOHpH≈11)1h,,。(cross-flow),80%,0.1MPa,0.12MPa。1.3　试验数据处理方法Tutujian:Ptm=[(Pi+Po)/2]-Pp,Ptm;Pi;Po;Pp。21±2℃。,,,KW,,。,。:·14·　25　2　20023DOI:10.19672/j.cnki.1003-6504.2002.02.006,Vnet=V-Vbf。,,。,,Ef=∑(PfQfDf),,Ebf=∑(PbfQbfDbf),Etot=Ef+EbfR=Vnet/Etot2　2.1　超滤的消毒作用1。1　1700～5100/mL50/mL99%1200～3000/100mL3/100mL99%　　1,,99%。,。2.2　超滤及其组合工艺的处理水质2。2　--(NTU)4～200.10.10.1(-)25～3520～3015～2515～20UV254(cm-1)0.106～0.1630.101～0.1370.028～0.070.044～0.081DOC(mg/L)4.25～9.433.27～6.682.85～5.933.05～6.12CODcr(mg/L)10.8～41.27.3～16.15.5～10.36.5～12.2BOD5(mg/L)6～122～42～32～3(mg/L)0.70～2.040.63～1.630.66～1.680.70～1.34(mg/L)0.43～0.830.21～0.330.10～0.240.20～0.33(mg/L)0.25～0.410.14～0.20.08～0.160.17～0.24(mg/L)101.0100.099.099.0:BOD5HACHBOD(Model-2173B),[3]。2,。-。,。BOD5,,,BOD5。,。,-,、,。。2.3　超滤及其组合工艺膜渗透通量的变化2。2,,2h,10h,35%。,,10h,70%。,,。-,10h,,85%,。-,10h,,78%,,,91%。,,,,,。,,-,-。。,,,。,,,,。2.4　超滤及其组合工艺的单位能耗产水量比较3。3　(m3/kW·h)-PAC-30min,4min20.321.719.315min,2min22.625.623.8　　。3,15min,2min30min,4min。,,-·15·　　,,-。2　3　(1),99%。(2)。,--。,、,-。(3)-,,。(4),,。[][1]　Al-MalackMH,AndersonGK.Coagulation-crossflowmi-crofiltrationofdomesticwastewater[J].J.MembraneSci-ence,1996,121:59～70.[2]　BourgeousKN,DarbyJL,TchobanoglousG.Ultrafiltra-tionofwastewater:effectsofparticles,modeofoperation,andbackwasheffectiveness[J].Wat.Res,2001,35(1):77～90.[3]　APHA,AWWA,WEF.StandardMethodsfortheExami-nationofWaterandWastewater[M].19thedition,1995.(:2001-12-10)·16·　25　2　20023ExperimentStudiesofEffectofCO2onNOReductioninCH4FlameXUMin,QIUJian-rong,LIJun(StateKeyLaboratoryofCoalCombustion,HuazhongUniversityofScienceandTechnology,Wuhan430072)Abstract:SystematicexperimentsontheeffectofCO2onNOre-ductioninCH4flamewerecarriedout.ItwasfoundthatvariousstoichiometricratioshadapronouncedinfluenceonreductionofCO.Comparedtotheconditionofleanfuel,NOreductionratioishigherundertheconditionofrichfuel.ExistenceofCO2hasapositiveeffectonNOdestruction,butonthecontrary,CO2givesanegativeeffectevidentlyonNOdestructionunderrichfuelcondi-tion.ItwasalsonoticedthatthenegativeeffectofCO2onNOde-structionunderrichfuelconditionfadedoutwiththecontinuousin-creaseofCO2concentration.Keywords:O2/CO2;NO;reductionStudiesonPhoto-catalyticDegradationofPerovskite-typeOxides:LaFeO3andSrFeO3-λSONGLi-xia,FUXi-xian,YANGQiu-hua,SUNYi-huan,WANGJun-zhen(DepartmentofChemistry,TianjinUniversity,Tianjin300072)Abstract:Degradationexperimentsofvariouswater-solubledyeswereperformedinasuspensionsystemofLaFeO3andSrFeO3-λpreparedbycitratemethod.AfluorescentHglampwasusedasir-radiationsource.Theexperimentalresultspresentedevidentphoto-catalyticactivitiesofperovskite-typeoxides,ofwhichSrFeO3-λshowedstrongeractivitiesthanLaFeO3.ThisisattributedtotheuniqueelectronicstructureoftheionA(La3+,Sr2+).Keywords:LaFeO3;SrFeO3-λ;photo-catalyticactivity;water-sol-ubledyeApplyingGeo-accumulationIndextoAssessHeavyMetalPollutioninSediment:InfluenceofDifferentGeochemicalBackgroundTENGYan-guo1,TUOXian-guo,2NIShi-jun2,ZHANGCheng-jiang2(1.InstituteofEnvironmentalScience,BeijingNormalUniversity,Beijing100875;2.ChengduUniversityofTechnology,Chengdu610059)Abstract:Mǜllerindexofgeo-accumulationorIgeoisawidelyrec-ognizedindexformetalpollutionthatindicatesthelevelofcontam-inationfoundinsediments.Inthispaper,influenceofdifferentgeochemicalbackgroundselectedwasdiscussedwhentheassess-mentwasmadeusingIgeo.Toreducetheinfluence,itissuggest-edthatthegeochemicalbackgroundselectedbeincloserelationtothesediment.Keywords:geo-accumulationindex;sediments;heavymetalpollu-tion;geochemicalbackgroundStudiesonDegradationofDimethylPhthalateUsingMicellarElectrokineticCapillaryChromatographyLIHai-yan,SHIYin-tao,ZENGQing-fu(TheResearchCenterofEnvironmentalScience,WuhanInstituteofScienceandTechnology,Wuhan430073)Abstract:ProcessesofdimethylphthalatedegradationinaqueoussolutionbyozonationandTiO2-photo-catalyticoxidationrespec-tivelywereinvestigated.Characterizationoftheintermediatesandtheendproductsweredeterminedbymeansofmicellarelectroki-naticcapilliarychromatography.Thepreliminaryresultsshowedmainintermediateproductbyozonationwasphthalateacidthatwentthroughoxidationfurther.However,TiO2-photo-catalyticoxidationofdimethylphthalatefollowsafreeradical-freemecha-nism,directlybreakingbenzeneringswiththeendproducts:CO2andH2O.Keywords:dimethylphthalate;oxidationdegradation;micellarelectokinaticcapillarychromatographyPreliminaryStudiesofChitinasImmobilizedMicro-organismMediaforTreatingWastewaterLIFei-li,XULu-sheng,PANLi-li(SchoolofBiologicalandEnvironmentalEngineering,ZhejiangUniversityofTechnology,Hangzhou310014)Abstract:Thispaperdescribesaseriesofprocessesofbio-chemicalwastewatertreatmentusingchitinasimmobilizedmicro-organismmedia.Factorstha