【作者】 刘艳； 解立平； 费学宁； 姜远光； 张玉忠；

【Author】 LIU Yan~(1,2),XIE Liping~(1,2),FEI Xuening~ 3, JIANG Yuanguang~3,ZHANG Yuzhong~(2,4) (1.College of Environment & Chemical Engineering,Tianjin Polytechnic University,Tianjin 300160,China;2.College of Environment & Chemical Engineering,Tianjin Polytechnic University,Tianjin 300160,China;3.Department of Environmental and Municipal Engineering, Tianjin Institute of Urban Construction,Tianjin 300384,China;4.College of Materials Science and Engineering,Tianjin Polytechnic University,Tianjin 300160,China)

【机构】 天津工业大学 环境与化学工程学院； 天津工业大学 中空纤维膜材料与膜过程省部共建国家重点实验室培育基地； 天津城市建设学院环境与市政工程系； 天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地； 天津工业大学材料科学与工程学院；

【摘要】 研究了一体式光催化—膜分离三相流化床反应器反应区曝气量与导流板结构对内循环流动、TiO₂分布特性以及光催化降解酸性红B废水的影响变化规律.结果表明,反应区曝气量越大,内循环流速越大,且TiO₂的悬浮性能越好.在一定的反应区曝气量下,上、中导流板越长,或下导流板越短,内循环流速均越大,且TiO₂在反应器中的分布亦越均匀;上、中和下导流板较长时,TiO₂的悬浮浓度较高;而光催化反应脱色率则随相应TiO₂浓度的增高而增大;内循环流速越大,TiO₂浓度越低,越有利于减缓膜污染,其中内循环流速是影响膜污染的主要因素.更多还原

【Abstract】 The effects of reactive area aeration and internal baffle structures in the integrative reactor coupling with photocatalysis oxidation and organic membrane separation,on the properties of annular flow, TiOz distribution and the photocatalytic degrading Acid red B wastewater were investigated.The results show that the performance of TiO₂ distribution can be improved when the reactive area aeration strength increase,and the annular flow speed is also increased.At the condition of the fixed reactive area aeration strength,the longer of the above and middle beffle,or the shorter of the bottom beffle,the faster of annular flow speed,and the TiO₂ distribution in the reactor becomes more uniform.TiO₂suspending concentration increases with baffles length,and photocatalytic decolorized efficiency increases with TiO₂suspending concentration.The membrane fouling can be retarded when the annular flow speed increase or the TiO₂ suspending concentration decrease,and the former is the main influence factor on the fouling.更多还原