UV-H_2O_2消毒对水中余氯含量衰减的影响研究  

EFFECT OF UV-H_2O_2 DISINFECTION ON THE DECAY OF RESIDUAL CHLORINE IN DRINKING WATER

作　　者：张一清[1] 张永吉[1] 欧宣积[1] 许光益[1] 亓万琦[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《水处理技术》2013年第4期62-65,共4页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(51178323;51108329);中国博士后科学基金面上项目(20100480626);中央高校基本科研业务费专项基金(0400219205)

摘　　要：以紫外线-双氧水(UV-H2O2)为研究对象,研究了UV-H2O2消毒对水中余氯含量衰减的影响,并考察了UV辐照度、H2O2含量以及初始氯含量、TOC、pH和温度等对余氯含量衰减的影响。结果表明,UV辐照时间和辐照度、H2O2含量的增加会加速余氯含量的衰减;初始氯含量越小,余氯含量的衰减速率越快;余氯含量的衰减属于酸催化反应,pH的降低会促进余氯衰减;温度的升高以及水中有机物含量的增加也会加速余氯含量的衰减。The effect of UV-H2O2 disinfection on the decay of residual chlorine was investigated. The effect of Ultraviolet intensity, hydrogen peroxide concentration, as well as water quality parameters including initial residual chlorine concentration, total organic carbon concentration, pH and temperature on residual chlorine decay were also investigated. Results show that the decay rate of residual chlorine increases with the enhancement of UV radiation time, UV radiation intensity and hydrogen peroxide concentration. The lower of initial residual chlorine concentration, the more higher of decay rate of residual chlorine gets. The decay reaction of residual chlorine is a type of acid-catalysis, and lower pH elevates its rate. In addition, the decay rate of chlorine increases with the increment of temperature and total organic carbon concentration.

关 键 词：紫外线 H2O2 消毒 余氯 衰减 

分 类 号：TU991.25[建筑科学—市政工程]