摘要
研究了多相光催化反应器中紫外光辐射能量的分布 ,其测试系统主要为光导纤维 光栅光谱仪 .结果表明 ,紫外光辐射相对能量在多相光催化反应器中轴向和径向的分布是不均匀的 ,轴向的能量分布是中轴处能量最大 ,远离中轴能量逐渐减弱 ;径向的能量分布是随着径向远离光源而逐渐减弱 .光催化剂对紫外光辐射能的吸收和阻挡作用较大 ,微孔曝气对光辐射能量的衰减影响较小 .
The distribution of UV light radiant energy in heterogeneous photocatalytic reactor is studied by using fiber-optic and raster-spectrometer. The experimental results showed that the distribution of UV light radiant energy is not even distributed among the axial and radial directions of the reactor.It was the strongest at the middle part of the reactor than other parts in axial direction, and reduced gradually in radial direction. The photocatalyst could considerably affect distribution of UV light radiant energy due to its absorption and obstruction function. Whereas, microporous aerating affected only slightly the distribution of UV light radiant energy. The model of attenuation could be expressed by an exponential equation.
出处
《环境科学学报》
CAS
CSCD
北大核心
2004年第1期82-85,共4页
Acta Scientiae Circumstantiae
基金
哈尔滨工业大学跨学科交叉性研究基金资助项目 (HIT .MD2 0 0 1.2 7)
关键词
多相光催化反应器
紫外光
辐射能量
分布
光导纤维
水处理
heterogeneous photocatalytic reactor
UV light
distribution of radiant energy
optic fiber
