低压单波长紫外灯在水下时紫外线输出量的测量  

Measurement of UV Output of Monochromatic (254 nm) Low Pressure UV Lamp in Water

作　　者：陈钰 张连峰[1,2] 刘淑杰 赵剑强[3] 吴秉奇 李梦凯[4] CHEN Yu;ZHANG Lian-feng;LIU Shu-jie;ZHAO Jlan-qlang;WU Bing-qi;LI Meng-kai(Laboratory of Ecological and Environmental Protection,Research Institute of Tsinghua University in Shenzhen,Shenzhen 518057,China;Gttangdong Research Center for Development and Application of Environmental Microbial Resources,Shenzhen 518057,China;School of Environmental Science and Engineering,Chang＇an University,Xi＇an 710061,China;Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China)

机构地区：[1]深圳清华大学研究院生态与环境保护实验室,广东深圳518057 [2]广东省环境微生物资源开发与应用工程技术研究中心,广东深圳518057 [3]长安大学环境科学与工程学院,陕西西安710061 [4]中国科学院生态环境研究中心饮用水科学与技术重点实验室,北京100085

出　　处：《中国给水排水》2018年第21期47-52,共6页China Water & Wastewater

摘　　要：将碘化物/碘酸盐(KI/KIO_3)化学曝光剂密封于自制的计量皿内,置于水下测量低压汞紫外灯周围的辐射照度,用发散辐射模式结合辐射照度计算出紫外线的输出量。国际紫外线协会(IUVA)推荐了以凯兹方程为基础的测量和计算紫外线输出量的方法,它是发散辐射模式在介质吸光系数为零时的辐射照度计算公式。因此,提出的测量方法在原理上是IUVA测量方法向水下的拓展。考察了曝光剂浓度和曝光剂内部混合对测量结果的影响,并对计量皿石英窗的反射和吸收量进行了计算,排除了相关误差。实测结果显示,此方法有较高的精确度,在不同吸光度的水体中,分别测得同一个8 W低压汞紫外灯紫外线输出量的相对误差为1. 73%。Chemical actinometer solution （KL/KIO3） was sealed and utilized to measure the irradiance of a low-pressure UV lamp in water. The UV output of a lamp could be calculated using the diffuse radiation model based on the measured irradiance data. The international ultraviolet association （IUVA） recommends the method based on the Keitz equation to measure the UV output of a lamp in air, which is an application of the diffuse radiation model when the absorbance coefficient of the media is zero. This work proposed to expand the application of the IUVA method in water. The influences of the concentration of chemical actinometer solution and the mixing of the solution inside the container were researched. Reflections from the quartz window and the surface of the solution, as well as energy loss inside quartz were calculated. The potential errors on the energy losses were removed. The results indicated good measurement accuracy of the proposed method. The relative difference between two measurements of an 8 W low-pressure UV lamp in water with different UV absorbance coefficients was 1.73%.

关 键 词：紫外灯 紫外线输出量 水下 化学曝光剂 凯兹公式 发散辐射模式 

分 类 号：TU99[建筑科学—市政工程]