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当前位置:首页 > 机械/制造/汽车 > 制造加工工艺 > 腐殖酸混凝过程FI曲线的特征参数分析
:025322468(2002)20420423205:X13112:AFI,(,710055):pH=510,PDA2000,PDAFI,FIsht1t2.FI,sh.FI,()(TOC).:;;;AnanalysisofcharacteristicparametersofFIcurveforcoagulationofhumicacidJINPengkang,WANGXiaochang(SchoolofEnvironmentalandMunicipalEngineering,XianUniversityofArchitecture&Technology,Xian710055)Abstract:OnlinemonitoringofcoagulationprocesswasconductedusingPDA2000forremovalofhumicacidatpH=510.ThePDAoutput(FIcurve)wasanalyzedandtherelationsbetweentheparameters(s,h,t1andt2)ofFIcurveandflocsizewerestudiedatdifferentalumdos2es.TheresultsshowedthattheFIcurveshavethesametrendofvariationtothatofflocsize.Themaximumflocsizeisalmostproportionaltosandh,andthealumdoseaffectstheshapeofFIcurveanditscharacteristicparameters.AcorrelativerelationshipwasfoundamongFIcurveandcolloidalstability(potential)andTOCremoval.Keywords:coagulation;onlinemonitoring;characteristicparameters;Al2humicfloc:2001208202;:2001211207:(50010130460):(1974),,,,,,,,.PDA(PhotometricDispersionAnalyzer)[1,2].PDA,,[3],,FI(FlocculationIndex).,[4],[3],FI.,FI,FI.PDA,,FI,FI,.1.22420027ACTASCIENTIAECIRCUMSTANTIAEVol.22,No.4Jul.,20020145m.TOC10mgPL,10mgPLNaHCO3.:(200rPmin)1min;(20rPmin)30min;60min.251,pH51000105.800mL,(Al2(SO4)318H2O).11.2.PDA20003.4.5.Fig.1Flocculationtestarrangement,PDA2000(RankBrother),.,.1.,(MacrotechNi2chionZC22000).TOC(TOC25000A).22.1FIFI.2,(0107mg(Al)Pmg(TOC)),FI,,,FI,,.,FI,,0141mg(Al)Pmg(TOC)FI=0.,FI.2Fig.2RelationbetweenFIandalumdose2.23.2,FI,FI.424223(pH=5.0)Fig.3Variationofalum2humicflocsatdifferentcoagulantdosages4TOCFig.4VariationofTOCandpotentialatdifferentcoagulantdosages2.3TOC4TOC.TOC(||5mV).(0120mg(Al)Pmg(TOC)),,TOC,(0168mg(Al)Pmg(TOC)),TOC,15mV.3FI3.1FI5,FIS,,FI:sFI,,X;h0FI,;hFI,;t1,,;t2FI5FIFig.5AnalysisofFIcurve.,,[5,6],t1s;[7],h.,,FI.3.2FI6,sh.524XGregoryJ,HillerN.Interpretationofflocculationtestdata.ProceedingoffiltrationtechnologyinEurope,1995.4054144:FI,(s)(h),,,,.t1t2,(s),(t1)(t2),(h).6FIFig.6RelationbetweenFIparametersandalumdose7shFig.7Relationamongs,handflocsize3.3sh7,FIsh,FI.423FI,FI.PDA.PDA,,,,,FI.,,FI,20141mg(Al)Pmg(TOC).,,,,,().,,II0=164r2R64n2-1n2+22(,n,R,r,I,I0)[8].,,FI.FI.,62422,.FI,sht1t2,s,,,,,,,s,t1t2,,h.,,,,,.,,,,,,,,,(SweepCoagulation),,,,sh.7sh.,4TOCsh,TOC.,,,TOC.,,,TOC,.5(1)PDA,FI,s,h,t1t2.(2)FI,sh.(3)FI,()(TOC).,.:[1]GregoryJ.Turbidityfluctuationsinflowingsuspensions[J].JColloidandInterfaceScience,1985,105(2):357371[2]GregoryJ,NelsonDW.Anewopticalmethodforflocculationmonitoring[M].SolidliquidSeparation,Chichester:EllisHorwood,1984.172182[3],,..,2002,22(1):611[4]GregoryJ,DuanJ.Theeffectofdissolvedsilicaonthehydrolyzingmetalcoagulations[J].WaterScienceandTechnology,1998,38(6):113120[5]StumnW,MorganJJ.Chemicalaspectsofcoagulation[J].JAWWA,1962,54:971998[6]StumnW,OMeliaCR.Stoichiometryofcoagulation[J],JAWWA,1968,60:514539[7],.GTPRe[J].,1989,5(4):49[8]EverettDH.Basicpricinplesofcolloidscience[M].London:RoyalSocietyofChemistry,1999.957244:FI
本文标题:腐殖酸混凝过程FI曲线的特征参数分析
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