浮选法作为垃圾渗滤液后处理工艺的试验研究

1,A.I.Zouboulis2,1(1.,200092;2.Aristotle,):,,,,pH,99%,:;;;:X703.1:C:1000-4602(2006)05-0063-05ExperimentalStudyonFlotationasLandfillLeachatePost2treatmentProcessWUJun1,A.I.Zouboulis2,ZHAOYou2cai1(1.StateKeyLaboratoryofPollutionControlandResourceReuse,TongjiUniversity,Shang2hai200092,China;2.DepartmentofChemistry,AristotleUniversity,Greece)Abstract:Theapplicationofflotationfortheremovalofhumiccompoundswasinvestigatedbyu2singitasapossiblepost2treatmentprocessofsimulatedlandfillleachatesafterbiologicaltreatment.Sev2eralparameterswereexaminedtowardstheoptimizationofhumiccompoundsremoval.Thedosageofcol2lectorisfoundtobethemajorparameterforcontrollingtheoverallefficiencyoftheprocess.However,thetypeanddosageoffrother,thesolutionpH,ionicstrengthandflotationtimearefoundalsotobesig2nificantfactorsaffectingtheremovalofhumiccompounds.Underoptimizedconditions,whicharemainlydeterminedbyinitialconcentrationofhumiccompounds,thetreatmentperformanceisveryefficient,reachingalmost99%.Itindicatesthatflotationcanserveasapossiblealternativetechnologyforthere2movalofhumiccompounds.Keywords:flotation;landfillleachate;post2treatment;humiccompounds:30%()[12],,,,[3][45],,3622520063CHINAWATER&WASTEWATERVol.22No.5Mar.20061111(HA)(5g/L):5gHA()1L0.1mol/L,48h[6]HA(100200300mg/L)()(CTAB)CTAB(2g/L)0.500gCTAB250mL,(10500mg/L)99%,(10%)(MIBK)0.002mg/L(SDS)pH0.1mol/L1mol/L0.1mol/L11250mm600mm,(300mm),,(200mL/min)HA(400mL)500mL0.5min,0.5min,,,(10min),113:;TOC:TOC-VCSH/CSNTOC;CODDrlangeLT100Lasa100COD;Z-RankBrothersCTAB:20mL20mL20mL,0.00008mg/LSDS2:,;;[4],211,,,,11Tab.1Screeningtestresultsofdifferentfrothers%HAMIBK0.423.70.2556.30.133.20.459.80.2558.00.143.71,HA,,,L.B.Scorzelli[7],,,,,,HA100mg/LCTAB50mg/LpH=1010min,1%,HA,,,,HA1%,HA,,1%46522212CTABpH=81%10minHA100200300mg/L,CTABHA11CTABHAFig.1InfluenceofCTABdosageonhumicacidsremovalatdifferentinfluentconcentrations1CTAB1,HACTAB,CTABHA,HA,CTABHAHACTABCTAB60100mgCTAB/100mgHACTAB,HA,HA(200mg/L300mg/L),CTAB50mgCTAB/100mgHA,HAHAZHA100mg/LpH10.31%10min,Z22HAZFig.2Z2potentialofHAsolutionatdifferentsurfactantdosage2,ZCTAB,CTAB85mg/L,,213pHHAHA100mg/L,pH,pHHA,HA90%CTAB(pH=4,CTAB30mgCTAB/100mgHA,pH=870mgCTAB/100mgHA)3HA100mg/LCTAB355070mg/L,pHHA3pHHAFig.3InfluenceofpHonHAremovalatdifferentCTABdosage3,HApH,CTAB(70mg/L),,HACTABpH4pHHAHAZ4pHZFig.4Z2potentialofmixedliquoratdifferentpHvalue4,ZpH;pHZ,565,:22HA,ZZ-1010mV,[8]214CTAB,HACTAB50mg/L,10min20min20%,;CTAB70mg/L,,10min5min,95.5%,,215HA[910],,HACTABHAHA100mg/LCTAB70mg/L,KNO3Na2SO4NaClHA,KNO3HA(HAKNO3,KNO30.1mg/L,HA20%),HA,0.01mg/LHA,HA,()HA,216CTABCTAB,CTAB2CTABCTAB,,CTAB,CTAB2CTABTab.2ResidualconcentrationofCTAB/minCTAB/(mgL-1)CTAB/(mgL-1)105010.27010.820508.02708.31:HA100mg/L,1%,pH=83pH,1%;CTAB60100mgCTAB/100mgHA(HA200mg/L300mg/L,50mgCTAB/100mgHA)pHHA,,pH,HA,HAHA,KNO3Na2SO4NaCl,HA,,KNO3HA:A.I.Zouboulis:[1]SchnitzerM.Soilorganicmatterthenext75year[J].SoilSci,1991,151(1):41-58.[2]CalaceN,LiberatoriA,PetronioBM,etal.Characteris2ticsofdifferentmolecularweightfractionsoforganicmat2terinlandfillleachateandtheirroleinsoilsorptionofheavymetals[J].EnvironmentalPollution,2001,113(3):331-339.[3]GallandHU,vonGuntenU.Chlorinationofnaturalor266522ganicmatter:kineticsofchlorinationandofTHMforma2tion[J].WatRes,2002,36(1):65-74.[4]ZouboulisAI,MatisKA,StalidisGA.FlotationTech2niquesinWaterTreatment[M].Durdrecht:KluwerAca2demicPublishers,1992.[5]RubioJ,SouzaML,SmithRW.Overviewofflotationasawastewatertreatmenttechnique[J].MinerEng,2002,15(3):139-155.[6]KamSangkyu,JohnGregory.Theinteractionofhumicsubstanceswithcationicpolyelectrolytes[J].WatRes,2001,35(15):3557-3566.[7]ScorzelliLB,FragomeniAL,ToremML.Removalofcadmiumfromaliquideffluentbyionflotation[J].Min2erEng,1999,12(8):905-917.[8]MartinezLueranosA,UribeSalasA,LopezValdiviesoA.Mechanismofadsorptionofsodiumdodecylsulfonateoncelestiteandcalcite[J].MinerEng,1999,12(8):919-936.[9]KimEK,WalkerHW.Effectofcationicpolymeraddi2tivesontheadsorptionofhumicacidontoironoxidepar2ticles[J].ColloidsSurf,2001,194(1):123-131.[10]ZouboulisAI,MatisKA.Removalofcadmiumfromdi2lutesolutionsbyflotation[J].WaterSciTechnol,1995,31(3-4):315-326.:[phone]E-mail:[e-mail]:2005-08-30(62)45,FeCl3ZetaPFC,PFC(),FeCl3PFCFeCl3,0.45NTUFeCl3,;PFC,,B=0.73PFC,BPFCFe(OH)3,Fe(OH)3,,3PFCFeCl3Fe(),FeCl3,PFC,FeCl3,PFC,B,PFC,B=0.76.510-5mol/L,FeCl330%,PFCFeCl3,PFCFeCl3:[1].[M].:,2003.[2],,.()[M].:,2000.[3],.[J].,1998,18(3):6-9.[4],,,.[J].,1998,20(4):9-12.[5]BaesCF,RobertE.TheHydrolysisofCations[M].NewYork:Wiley2IntersciencePublication,1976.:[phone]E-mail:[e-mail]:2005-11-08765,:22