超滤膜系统内部结构对膜过滤性能的影响钱伶琤

Vol.31,No.5,2012201231542-45WaterPurificationTechnology[]2011-11-09[][]1987-。[e-mail]。[1]。。[2]。[3-5]。、。。11205cm20cm10cm。10L／h。。1.4000742.4011233.210005。1.07。、。。TQ028.8B1009-0177201205-0042-04InfluenceofInternalStructureofUFSystemonFiltrationPerformanceofMembraneQianLingcheng1,LeiXiaoling2,HeDongkui3(1.ChongqingjiaotongUniversity,Chongqing400074,China;2.ChongqingInstituteofscienceandtechnology,Chongqing401123,China;3.JiangsuProvincialCommunicationPlanningandDesignInstituteCo.,Ltd.,Nanjing210005,China)AbstractInfluenceofpropertyofimmersedultrafiltration(UF)membranebytransformingitsinternalstructurewasinvestigated.Resultshows,filtrationpropertycanbeimprovedbyincreasingmembraneratiooflength／height(L／H).BesttreatmentefficiencycanbegotwhenL／Hratiovaluereaches1.07.IncreasingL／Hradiocanalsoimprovetheefficiencyofaerationbuthaslittleeffectonimprovingthebackwashing.Effectivenessofmembranefiltration,aerationandbackwashingofbilateraloutletmethodareallbetterthanthoseofunilateraloutletmethod.Bilateraloutletmethodshallbeselectedpriority.Backwashingway,whichuseairandwaterbothafterusingwateronly,hasagoodeffectonmembranefiltration.KeywordsimmersedUFmembranelengh／heightratioofhollowfibremembraneoutletmodebackwash!!!!!!!!!!!!!!42--DOI:10.15890/j.cnki.jsjs.2012.05.008WATERPURIFICATIONTECHNOLOGYVol.31,No.5,2012October25th,201230min1min7.5m3／m2·h180min4min2min2min46.5L／m2·h7.5m3／m2·h5mg／LNaClO。PVDF1。。2。2LHL／H。L／H1.031.051.071.091.11L/H。。2。2。1.051.031.071.051.071.091.111.07。32~34L／m2·h。。1Fig.1FlowDiagramoftheExperiment1-2-3-4-5-6-7-8-9-10-11-!76541108311921浸没式中空纤维超滤膜组件特征参数表Tab.1ParametersoftheImmersedHollowMembraneModule／mm／mm／／mm／m2／μm0.751.4904750.20.032配置原水的主要水质指标Tab.2MainCharacteristicsofRawWater／℃pH／NTUTOC／mg·L-116.0~25.06.82~8.3710.55~18.607.86~9.292Fig.2FluxChangedwithFilteredVolume／L／L·m-2·h-15.04.84.64.44.24.03.83.63.43.23.00.00.20.40.60.81.0L／H=1.03L／H=1.05L／H=1.07L／H=1.09L／H=1.1143--Vol.31,No.5,2012[6]。、。。[7]。34。45。1.051.0310.71.051.071.091.11。。。。。。。。。。3。5。。／L·m-2·h-15.04.84.64.44.24.03.83.63.43.23.04Fig.4BackwashingEffectivenessbyDifferentL／HRatioL／H=1.03L／H=1.05L／H=1.07L／H=1.09L／H=1.11t／min0100200300400／L·m-2·h-15.04.84.64.44.24.03.83.63.43.23.03Fig.3AerationEffectivenessbyDifferentL／HRatiot／min010015020025050L／H=1.03L／H=1.05L／H=1.07L／H=1.09L／H=1.1146423837305Fig.5MembraneFlux-TimeCurveunderDifferentEffluentWaysJv／L·m-2·h-1t／min010015020025030035040050.44--WATERPURIFICATIONTECHNOLOGYVol.31,No.5,2012October25th,2012。。。。。。。。4。。。、。4min、4min2min2min。2min2min。。511.07。2。3。4。1,,,.[J].,2009,23:54-55.2.[J].,2009,2:98-100.3,,.[J].,2009,29(1):6-10.4XiaolingLei.Simulationandmechanismsofaerationimpactsonthepermeatefluxinsubmergedmembranesystems[J].DesalinationandWaterTreatment,2010,18,277-285.5,,.[J].,2011,30(1):41-46,74.6,,.[M].:,2006,87-110.7,,.[J].,2006,26(1):47-49.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!45--