高效有机吸附膜数学模型的建立及应用

3811200611JOURNALOFHARBININSTITUTEOFTECHNOLOGYVol138No111Nov.2006郑永杰1,2,孙德智1,赵新2,许凤2(1.,150090;2.,161006):采用自行合成的有机吸附膜富集净化水中微量有机污染物,依据有机吸附膜对水中有机污染物物理吸附的过程,在大量测试数据基础上建立高效有机吸附膜吸附饮用水中氯仿的数学模型,并用统计方法求取了模型中的参数.应用此模型研究了萃取时间水样中氯仿的本底质量浓度和高效有机吸附膜厚度等对萃取效率的影响.通过有机吸附膜对模拟饮用水中氯仿的吸附实验,证明该模型能较准确地模拟高效有机吸附膜吸附氯仿的过程,模型计算数据与实验数据吻合较好.:数学模型;吸附膜;吸附;饮用水深度处理:TQ424.3:A:0367-6234(2006)11-1844-03EstablishingandapplicationformathematicalmodelofhighperformanceorganicadsorptionfilmZHENGYong-jie1,2,SUNDe-zhi1,ZHAOXin2,XUFeng2(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.SchoolofChemistryandChemicalEngineering,QiqiharUniversity,Qiqihar161006,China)Abstract:Theorganicadsorptionfilmsynthesizedbyinvestigatorwereusedtopurifythetraceorganicpollu-tantinwater.Accordingtothephysicaladsorptionprocessoforganicadsorptionfilmadsorbingtraceorganicpollutantinwater,themathematicalmodelforhighperformanceorganicadsorptionfilmwasestablishedbasedongreatnumberoftestdata,andtheparametersofthismodelwascalculated.Bythismode,ltheeffectsofadsorptiontime,concentrationofchloroformindrinkingwaterandfilmthicknessontheadsorptionefficiencywerediscussed.Themodelapplicationtestoforganicadsorptionfilmadsorbingtraceorganicpollutantinwaterprovedthatitcanaccuratelysimulatetheprocessofhighperformanceorganicadsorptionfilmadsorbingchloro-formindrinkingwater,andthemodeldataaccordedwiththeexperimentaldata.Keywords:mathematicalmode;ladsorptionfilm;adsorption;drinkingwateradvancedtreatment:2004-2-31.:(10541255).:(1964)),,,;(1960)),,,,.,[1].,[2],.[3,4],.,,..:1);2),;3).,(1),(2)(3).1模型假设:;;,;.2模型推导1.1C(0),Lg/L;L,,m;D,,m2/s;k,,s-1;a,Lg/L;CL,Lg/L.Fick5C5t=D52C5x2.(1)x=0C=C(0).(2),-dCldt=k(Cl-a).(1)(2)Laplace,Dd2½Cdx2-p½C=0,(3)C0=C(0)p,(4)(p+k)Cl=k½a.(5)(3)½C=AepD.x+Be-pD.x.(6)x],C,(4)(6),½C=C(0)se-pD.x.,x=L,Cl=C(0)pe-pD.L.(7)(5)(7),LaplaceaC(0)=erfcL2Dt+1k.ddterfcL2Dt.(8):erf(x)=2PQx0e-s2ds,erfc(x)=1-erf(x).,erfL2Dt=2PE]n=0(-1)nn!QL2Dt0s2nds=LPDt1-13@1!L2Dt2+15@2!L2Dt4-17@3!L2Dt6+,+(-1)n(2n+1)@n!L2Dt2n.L,[5],,(8),aC(0)=1-LPD2kt-12kt32.(9):aC(0)Q.3实验数据收集//[6].:TRACEMASS2000;:Supelco-Q,30m@0132mm,(PDMS-100);Supelco.:,50e2min;5e/min120e5min.,200e.:,:115ml/min.:1B15.:EI,70eV,:220V,:150LA,:,Xcalibur,NIST.,//.:2108@10-4m3;:22e;:50Lg/L,1.1/min/(Lg#L-1)/(Lg#L-1)/%05050010503813023143205034162301753050311533619240502714845103505025169481606050241545019380502411251179#1845#11,:4模型中参数的确立411DD:D=717@10-15TLT13A-T130.:T=273+20=293K,L=11005mPa#s,VA=7916cm3/mo,lV0=8cm3/mo,l,D=9175@10-13m2/s.:T,K;L,Pa#s;VA,cm3/mo;lV0,,8cm3/mo.l412KL,KL:1,(9),,k=21267@10-3s-1,L=5119@10-5m.5模型检验D,K,L(9),Q=[e-mail]615,1.2.2Qt2,4000s,;4000s,,1,4000s,,,.,(9).6结论1),.2).3),.参考文献:[1],,.[J].,1996,2(2):56-58.[2],.[J].,2001,18(12):1019-1021.[3]GERMERDONKR.Numericalsimulationoftheeffectofmaldistributioninafixedbedadsorber[J].ChemEngandProcessing,1993,32(1):359-377.[4]BARTHJ.Two-dimensionalnon-isothermalmodelfortolueneadsorptioninafixedbedadsorber[J].ChemEngandProcessing,1993,35(1):57-64.[5].[M].:,2000.[6]EISERR,LEVSENK.Solid-phasemicroextractioncoupletogaschromatography:Anewmethodforthea-nalysisoforganicsinwater[J].JChromatography,1996,733(1):143-145.(刘彤)(1843)[3]RENNanq,iWANGBaozhen,MAFang.Hydrogenbio-productionofcarbohydratebyanaerobicactivatedsludgeprocdss[A].ProcWaterEnvironFedAnnuConfExpo68thDate[C].[s..l]:[s.n.],19951145-153.[4],,,.[J].,2002,23(3):366-373.[5],,,.[A].21-2003[C].[s..l]:[s.n.],2003.[6],,.[J].,2003,24(1):70-74.[7]RENNanq,iZHAODan,CHENXiaole,ietal.Mecha-nismandcontrollingstrategyoftheproductionandaccu-mulationofpropionicacidforanaerobicwastewatertrea-tment[J].ScienceinChina,2002,45(3):319-327.[8],,,.[A].21-2003[C].[s..l]:[s.n.],2003.[9],,,.[J].,2004,14(9):90-94.[10].[M].:,1989.(刘彤)#1846#38