工业水处理 ›› 2013, Vol. 33 ›› Issue (2): 67-69. doi: 10.11894/1005-829x.2013.33(2).67

• 实验研究 • 上一篇    下一篇

饮用水中三氯乙酸的紫外光降解研究

卞战强1, 毛月英1,2, 田向红1, 樊伟1, 张娟1   

  1. 1. 中国疾病预防控制中心农村改水技术指导中心,北京 102200;
    2. 清华大学核能与新能源技术研究院,北京 100084
  • 收稿日期:2012-11-28 修回日期:2012-11-28 出版日期:2013-02-20 发布日期:2013-03-01
  • 通讯作者: 张娟,博士,硕士生导师。E-mail: zhangjuand119@126.com。 E-mail:zhangjuand119@126.com;bianzhan2008@126.com
  • 作者简介:卞战强(1981-),硕士。 E-mail:bianzhan2008@126.com。

Study on the degradation of trichloroacetic acid in drinking water by UV-Iight

Bian Zhanqiang1, Mao Yueying1,2, Tian Xianghong1, Fan Wei1, Zhang Juan1   

  1. 1. National Guidance Center for Rural Water Supply Technique,Chinese Center for Disease Control and Prevention,Beijing 102200,China;
    2. Institute of Nuclear Energy and New Energy Source Technology,Tsinghua University,Beijing 100084,China
  • Received:2012-11-28 Revised:2012-11-28 Online:2013-02-20 Published:2013-03-01

摘要:

饮用水中高致癌物风险物三氯乙酸,普遍存在且难以去除。采用紫外光光降解可在较短时间内去除饮用水中高浓度的三氯乙酸,150 min内去除率达到72%。结果表明,这是一种高效、环保、简便的去除方法。其光降解反应符合一级反应动力学模型。实验还考察了水样品pH及常见离子Mn2+、NO2-、NO3-和Fe3+对降解率的影响。

关键词: 饮用水, 三氯乙酸, 紫外光降解

Abstract:

High carcinogens risk of trichloroacetic acid in drinking water exists everywhere,and is difficult to be removed.Trichloroacetic acid with high concentration can be removed from drinking water in a relatively short time by using ultraviolet light.The removing rate reaches 72% within 150 min.The results show that it is a highly efficient,environment-friendly and convenient method.The photodegradation reaction conforms to the pseudo-first order reaction kinetics.The effects of initial concentration,pH of water samples,and common ions,Mn2+,NO2-,NO3- and Fe3+,on degradation rate are investigated.

Key words: drinking water, trichloroacetic acid, UV-light degradation

中图分类号: