荷电膜去除水中表面活性剂十二烷基苯磺酸钠研究张洁欣

、、、、。、、、。、、1～10mg·L-11000mg·L-1200mg·L-1[1]。20066182kt20059.22%[2]。、、、。、、[3-5]。、。、、、[6-8]。、、、、、[9]。、。SDBSSDBS。11.1。Mm10×1031.25mm。300160SDBSSDBS40～400mg·L-1、0.15～0.35MPaNaCl100～300mg·L-1pH2～12SDBS。。SDBSSDBS40mg·L-185.68%pH。TQ028.8A1000-3770(2011)11-0069-0042011-03-30210[e-mail]3711201111TECHNOLOGYOFWATERTREATMENTVol.37No.11Nov.,201169DOI:10.16796/j.cnki.1000-3770.2011.11.0172SDBSFig.2EffectofconcentrationofSDBSonfluxandretentionrate0100200300400500012345678020406080100
(SDBS)/mgLJ/Lmh
R/%1.21。SDBS。1.31.3.16×103～10×103。1.3.2SDBS24h20min25℃、56L·h-130min。1.4DDS-307SDBS481.6mg·L-1。pHSDBS[10]。RR=(1-ρp/ρ0)×100%。1ρpρ0SDBS。JJ=V/(St)。2VSt。22.1SDBSSDBS40、60、80、250、400mg·L-125℃、56L·h-1、0.2MPa30min2。2SDBS、。SDBSNa+。SDBSNa+Na+SDBS。SDBS。SDBS40mg·L-185.7%SDBS。2.2250mg·L-1SDBS0.15、0.2、0.25、0.3、0.35MPa3。34.76L·m-2·h-112.04L·m-2·h-1。SDBS。SDBSSDBS。Na+1Fig.1Diagramoftheexperimentalsetup371170SDBS。Na+。2.3SDBS250mg·L-1NaClNaCl100、150、200、250、300mg·L-14。4NaCl。NaCl[11]。。NaCl。Na+[12]。Na+。2.4pHSDBS250mg·L-1NaOHHClSDBSpH5。5。Na+Na+。OH-。SDBSC－S。SDBSpH8。OH-Na+。H+。pH=10Na+。pHNa+。3SDBSSDBSpH。SDBSSDBSSDBS4Fig.4Theeffectofionicstrengthonfluxandretentionrate050100150200250300350012345678020406080100
(NaCl)/mgL
R/%J/Lmh3Fig.3Effectofpressureonfluxandretentionrate0.100.150.200.250.300.350.4002468101214020406080100J/Lmhp/MPa
R/%5pHFig.5EffectofpHonfluxandretentionrate135791113012345678020406080100J/LmhpH
R/%71STUDYONTHEREMOVALOFSURFACTANTSODIUMDODECYLBENZENESULFONATEBYCHARGEDMEMBRANEZhangJiexin,WeiJunfu,ZhangHuan(SchoolofMaterialScienceandChemicalEngineering,TianjinPolytechnicUniversity;KeyLaboratoryofHollowFiberMembraneMaterialandMembraneProcessofMinistryofEducation,TianjinPolytechnicUniversity,Tianjin300160,China)Abstract:Surfactantsodiumdodecylbenzenesulfonatesolutionwasretainedbytheplasmamodifiedpolysulfonechargedmembrane.Therejectiontestswereatdifferentfactorsincludingsolutionconcentration,operatingpressure(0.15~0.35MPa),ionicstrength(concentrationofNaCl100~300mg·L-1)andpH(2~12).TheretentionrateandfluxofSDBSsolutionretainedbychargedmembranewereobserved.Themechanismofretentionwasanalyzed.Experimentalresultsrevealedthatelectrostaticrepulsionwasthemainforceintheprocess.Andsizeexclusionalsoexisted.Solutionspossessinglowconcentrationshowedbetterrejectioneffectthanthosehavinghighconcentration.Wheninitialfeedconcentrationwas40mg·L-1,theretentionratecouldreach85.68%.Electrostaticrepulsionplayedanimportantroleatlowionicstrength.Theretentionrateatlowionicstrengthwashigherthanthoseathighionicstrength.Theretentionrateincreasedastheoperatingpressurepresentedhigh.AndtherejectionperformedwellwhenpHwasclosetoneutral.Keywords:chargedmembrane;sodiumdodecylbenzenesulfonate;electrostaticrepulsion;rejection40mg·L-185.7%SDBSpH。[1],.[J].,2008,28(2):9-12.[2].[J].,2007(4):25-29.[3]TakadaH,IshiwatariR,OguraN.Distributionoflinearalkylbenzenes(LABs)andlinearalkylbenzenesulphanate(LAS)intheTokyoBaysediments[J].Esturaine,CoastalandShelfSci.,1992,35(3):141-156.[4],,,.[J].,2004,20(11):80-82.[5]MakitH,OkamuraHAoyama,Halogenationandtoxicityofthebiodegradtionproductsofanonionicsurfactant,nonylphenolethoxylate[J].EnvironTaxicolChem.,1998,17(4):650-654.[6]WakabayashiA,KiikuchiM,LnoueW.Bioaccumulationprofileofsodiumlinearalkylbenzenesulfonateandsodiumalkylsulfonateincarp[J].Chemosphere,1978,7(11):917-924.[7],,,.[J].,2007,26(9):1263-1268.[8],,.[J].,2003,23(10):12-16.[9].[J].,2010,34(1):72-75.[10],,.[J].,1995,17(2):82-84.[11],.[M].:,2002.[12],,.[J].,2009,29(2):60-64.371168!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!CHARACTERISTICSANDKINETICSOFWASTEWATEROZONATIONCONTAININGACIDROSEDYETianZhaolong,WangXiaojun,GeQilong,QiLuqing,LiHao（SchoolofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,China）Abstract:Thecharacteristicsandkineticsofozonationwatercontainingacidrosedyewerestudied.Theexperimentalresultsshowedthatozonehadobviousabilitiesindegradationofacidrosewastewater.TheremovalrateofabsorbanceandCODreached97%and53.3%with2.72mg·L-1·min-1ozonedosageand40mincontacttimewhentheacidroseconcentrationwas100mg·L-1.Theozonationreactionconformstofirst-orderreactionkineticsinthetimeintervalof0～10min,10～20minand20～30min.Andthereactionrateconstantincreasedcontinuously.InadditionthereactionrateofozonationdecreasedwiththeincreaseofacidroseconcentrationandpHvalue.Keywords：acidrose;ozonation;kinetics72