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1、TiO2纳米管光催化氧化-膜分离耦合工艺性能的研究李苗苗1,2，解立平1,2*，莎莉1,2，杜金山3，费学宁4，王嫚嫚1(1.天津工业大学环境与化学工程学院，天津300387；2.省部共建分离膜与膜过程国家重点实验室,天津工业大学，天津300387；3.天津清华德人环境工程有限公司；4.天津城建大学环境与市政工程学院，天津300384）摘要：通过光催化降解12mg/L的酸性红B废水，研究了水热法制得的TiO2纳米管在光催化-膜分离三相流化床耦合反应装置(简称耦合反应装置)中的光催化降解性能及其对膜污染的影响。结果表明：酸性红B废水的降解率随水热时间和煅烧温度的增加而呈现先增加、后降
2、低的变化趋势，而膜污染则呈现先减轻、再增加的变化趋势，最佳的水热时间和煅烧温度分别为12h和400℃。膜污染随气冲洗时间间隔的增加而降低，最佳的气冲洗时间间隔为30min。耦合反应装置间歇运行时的膜污染比连续运行时的轻。与商业TiO2相比，TiO2纳米管的光催化降解性能更优，对膜污染的影响则更小。关键词：TiO2纳米管；光催化；膜分离；膜污染中图分类号：O643;X791文献标志码：AStudyonthePerformanceofCouplingTechnologyofTiO2NanotubePhotocatalysisOxidationandMembraneSeparationL
3、IMiaomiao1,2,XIELiping1,2*,SHALi1,2,DUJinshan3,FEIXuening4,WangManman1(1.SchoolofEnvironmentalandChemicalEngineering,TianjinPolytechnicUniv.,Tianjin300387,China;2.StateKeyLaboratoryofSeparationMembranesandMembraneProcesses,TianjinPolytechnicUniv.,Tianjin300387,China;3.TianjinTsinghuaDaringEnvi
4、ronmentalEng.CO.,LTD;4.SchoolofEnvironmentalandMunicipalEng.,TianjinChengjianUniv.,Tianjin300384,China;)Abstract:ThephotocatalyticdegradationperformanceandtheinfluencevariationonmembranefoulingfortheTiO2nanotubecatalysts,preparedbyhydrothermalmethod,wereinvestigatedbyphotodegradingAcidredBwast
5、ewater(12mg/L)usingakindofthree-phasefluidizedbedequipmentcouplingphotocatalysisoxidationandmembraneseparation(E-PS).TheresultsindicatedthatthedegradationefficiencyofAcidredBwastewaterfirstlyincreased,andfinallydecreasedwiththeincreaseofhydrothermaltimeandcalcinationtemperature,whiletheopposit
6、ephenomenononthemembranefoulingwasobservedandtheoptimaltimeandtemperatureweredeterminedas12hand400℃,respectively.Themembranefoulingdecreasedwithincreasingairrinsingtimeintervals,andtheoptimalintervalswasregardedas30min.ThemembranefoulinginE-PSduringintermittentoperationwaslowerthanthatduringco
7、ntinuousoperation.AscomparedtothecommercialTiO2,theTiO2nanotubeexhibitedhigherphotocatalyticdegradationperformanceandlowerinfluenceonthemembranefouling.Keywords:TiO2nanotube;photocatalysis;membraneseparation;membranefoulingTiO2光催化氧化技术具有
