悬浮式光催化反应器中催化剂的分离  

The Study of the Photocatalytic Oxidation Process Coupling with Inorganic Membrane Separation Technology

作　　者：田蒙奎[1] 尚百伟[1] 陶文亮[1] 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550005

出　　处：《广州化工》2012年第11期122-123,158,共3页GuangZhou Chemical Industry

基　　金：贵州省科技厅社发攻关项目(SZ[2008]3008);贵阳市科技局科技攻关项目([2008]014)资助

摘　　要：光催化高级氧化技术在深度水处理方面具有降解无选择性、高效、无二次污染的独特优势,光催化反应器是光催化反应高效进行的关键。在众多反应器中悬浮式反应器体现出传质优良、光源利用率高的特点,但催化剂细微颗粒的分离回收难以实现。本文利用自行设计的无机陶瓷膜分离组件对催化剂进行分离回收,对原生粒径21 nm的二氧化钛催化剂颗粒的分离效率达到99%,在操作压力为0.4 MPa时的膜渗透通量约为200 L.m-2.h-1。Photocatalysis, an advanced oxidation technology, attracted more and more attention in sewage treatment for its advantages in no selectivity, no secondary pollution and high efficiency, etc. Photocatalytic reactor was the key of the reaction efficiency. Slurry reactor had special advantages of high efficiency and high mass transfer effect among these photocatalytical reactores, but the primary weakness was the difficulty to separate the powder photocatalyst from suspen- sion. The liquid - solid separation technology using inorganic ceramic membrane was developed to solve this technical dif- ficulty. The results revealed that the separation efficiency of nanometer photocatalyst powder can reach more than 99.2%, and the infiltration flux was 200 L m -2 . h -1 when the operation press was 0.4 MPa.

关 键 词：光催化氧化 无机膜 分离技术 

分 类 号：O643[理学—物理化学] TQ034[理学—化学]