连续循环固定床光催化反应器动力学研究(1)操作参数对光催化效率的影响  

KINETIC STUDY ON CONTINUOUS FLOW IMMOBILIZED PHOTOCATALYTIC REACTOR (1) The Effect of Operation Parameters on Photocatalytic Efficiency

作　　者：范山湖[1] 湛社霞[1] 余向阳[1] 陈六平[1] 古喜兰[1] 李玉光[1] 石宗炳 

机构地区：[1]中山大学化学化工学院,广东广州510275 [2]广州环境保护科学研究所,广东广州510275

出　　处：《水处理技术》2002年第2期89-92,共4页Technology of Water Treatment

基　　金：广州市环境保护局资助研究课题

摘　　要：本工作对连续循环固定床光催化氧化水处理系统 ,系统地考察了操作参数对光催化氧化效率的影响 ,结果表明 ,流体流速显著地影响光催化效率 ,液相、气相流速分别达到 2 80 L/h和1 0 0 L/h时 ,模拟反应物达到最好的降解率 ;在一定条件下反应体系的光催化效率存在饱和行为 ;增加光强度明显提高反应速度 ;溶液 p H值影响很大 ,大于 1 0或小于 4,光催化效率都较高 ;添加H2 O2The effect of operating parameters was systematically investigated for the water treatment system of continuous flow immobilized photocatalytic reactor. The results showed that flow rate markedly affected the photocatalytic efficiency; when the flow rate of liquid phase and gaseous phase reached to 280 L/h and 100 L/h respectively, the simulation reactant reached the optimum degradation rate; at given conditions, the photocatalytic efficient of reaction system had the saturation behaviour; the increase of light density would obviously raised the reaction rate; pH value of solution obviously affected the photocatalytic efficiency; when pH>10, or ≤4, the efficiency was higher; the additive of H 2O 2 can heighten the degradation rate of organics.

关 键 词：光催化 TIO2 有机污染物 工业水处理 废水处理 连续循环固定床 光催化反应器 动力学 操作参数 催化效率 

分 类 号：X703.3[环境科学与工程—环境工程]