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高锰酸钾/亚硫酸氢钠氧化嗪草酮后消毒副产物的生成趋势及毒性研究

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杨海燕, 柳婷, 董慧峪, 强志民, 叶桂洪, 李翼, 孙晓博. 高锰酸钾/亚硫酸氢钠氧化嗪草酮后消毒副产物的生成趋势及毒性研究[J]. 环境化学, 2019, 38(5): 999-1004. doi: 10.7524/j.issn.0254-6108.2018101602
引用本文: 杨海燕, 柳婷, 董慧峪, 强志民, 叶桂洪, 李翼, 孙晓博. 高锰酸钾/亚硫酸氢钠氧化嗪草酮后消毒副产物的生成趋势及毒性研究[J]. 环境化学, 2019, 38(5): 999-1004. doi: 10.7524/j.issn.0254-6108.2018101602
shu
YANG Haiyan, LIU Ting, DONG Huiyu, QIANG Zhimin, YE Guihong, LI Yi, SUN Xiaobo. Effects of PM and PM/BS on the degradation of metribuzin and the formation potential of disinfection by-products[J]. Environmental Chemistry, 2019, 38(5): 999-1004. doi: 10.7524/j.issn.0254-6108.2018101602
Citation: YANG Haiyan, LIU Ting, DONG Huiyu, QIANG Zhimin, YE Guihong, LI Yi, SUN Xiaobo. Effects of PM and PM/BS on the degradation of metribuzin and the formation potential of disinfection by-products[J]. Environmental Chemistry, 2019, 38(5): 999-1004. doi: 10.7524/j.issn.0254-6108.2018101602
shu

高锰酸钾/亚硫酸氢钠氧化嗪草酮后消毒副产物的生成趋势及毒性研究

  • 1.

    北京建筑大学, 北京应对气候变化研究和人才培养基地, 北京, 100044;

  • 2.

    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

  • 基金项目:

    国家自然科学基金（51525806）和水体污染控制与治理科技重大专项（2017ZX07207-004）资助.

Effects of PM and PM/BS on the degradation of metribuzin and the formation potential of disinfection by-products

  • 1.

    Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China;

  • 2.

    Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China

  • Fund Project: Supported by the National Natural Science Foundation of China(51525806)and Major Science and Technology Program for Water Pollution Control and Treatment(2017ZX07207-004).

  • 摘要: 本文研究了不同pH条件下高锰酸钾/亚硫酸氢钠（PM/BS）对农药嗪草酮（MET）的氧化降解，预氧化后续氯化过程中消毒副产物（DBPs）的变化和毒性评估，同时高锰酸钾（PM）氧化作为对照组.研究表明，PM/BS预氧化较PM预氧化能加大污染物质MET的降解效率，两种预氧化过程中MET的降解率在酸性条件下最大且随着pH的升高而降低，DBPs的生成量和毒性都随着pH的升高而增大.碱性条件下降解率低却生成了大量的二氯乙腈，导致DBPs的生成量和毒性大幅增加，值得引起重视和注意，本文对此种现象产生的原因进行了详细探讨.PM/BS系统降解污染物需要控制在酸性条件下进行，既能增大降解效率，又能降低DBPs的毒性.
    Abstract: This paper investigated the effects of potassium permanganate/sodium bisulfite (PM/BS) on the degradation of pesticide metribuzin (MET) under different pH conditions, and the changes and toxicity evaluation of disinfection by-products (DBPs) during oxidation and subsequent chlorination. At the same time, potassium permanganate (PM) was used as a control group. Results showed that PM/BS pre-oxidation increased the degradation efficiency of MET compared with PM pre-oxidation. In the two pre-oxidation processes, the degradation efficiency of MET was the largest under acidic conditions and decreased with the increase of pH, while the formation potential and toxicity of DBPs increased with the increase of pH. It is worth noting that the degradation efficiency under alkaline conditions was low, and a large amount of dichloroacetonitrile was formed, which leads to a large increase in the formation potential and toxicity of DBPs. The reasons for this phenomenon were discussed in detail. Finally, it was concluded that the degradation of pollutants in the PM/BS system needs to be controlled under acidic conditions, which can increase the degradation efficiency and reduce the toxicity of DBPs.
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  • 收稿日期:  2018-10-16
  • 刊出日期:  2019-05-15
杨海燕, 柳婷, 董慧峪, 强志民, 叶桂洪, 李翼, 孙晓博. 高锰酸钾/亚硫酸氢钠氧化嗪草酮后消毒副产物的生成趋势及毒性研究[J]. 环境化学, 2019, 38(5): 999-1004. doi: 10.7524/j.issn.0254-6108.2018101602
引用本文: 杨海燕, 柳婷, 董慧峪, 强志民, 叶桂洪, 李翼, 孙晓博. 高锰酸钾/亚硫酸氢钠氧化嗪草酮后消毒副产物的生成趋势及毒性研究[J]. 环境化学, 2019, 38(5): 999-1004. doi: 10.7524/j.issn.0254-6108.2018101602
shu
YANG Haiyan, LIU Ting, DONG Huiyu, QIANG Zhimin, YE Guihong, LI Yi, SUN Xiaobo. Effects of PM and PM/BS on the degradation of metribuzin and the formation potential of disinfection by-products[J]. Environmental Chemistry, 2019, 38(5): 999-1004. doi: 10.7524/j.issn.0254-6108.2018101602
Citation: YANG Haiyan, LIU Ting, DONG Huiyu, QIANG Zhimin, YE Guihong, LI Yi, SUN Xiaobo. Effects of PM and PM/BS on the degradation of metribuzin and the formation potential of disinfection by-products[J]. Environmental Chemistry, 2019, 38(5): 999-1004. doi: 10.7524/j.issn.0254-6108.2018101602
shu

高锰酸钾/亚硫酸氢钠氧化嗪草酮后消毒副产物的生成趋势及毒性研究

  • 1.  北京建筑大学, 北京应对气候变化研究和人才培养基地, 北京, 100044;
  • 2.  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
  • 收稿日期:  2018-10-16
基金项目:

国家自然科学基金（51525806）和水体污染控制与治理科技重大专项（2017ZX07207-004）资助.

摘要: 本文研究了不同pH条件下高锰酸钾/亚硫酸氢钠（PM/BS）对农药嗪草酮（MET）的氧化降解，预氧化后续氯化过程中消毒副产物（DBPs）的变化和毒性评估，同时高锰酸钾（PM）氧化作为对照组.研究表明，PM/BS预氧化较PM预氧化能加大污染物质MET的降解效率，两种预氧化过程中MET的降解率在酸性条件下最大且随着pH的升高而降低，DBPs的生成量和毒性都随着pH的升高而增大.碱性条件下降解率低却生成了大量的二氯乙腈，导致DBPs的生成量和毒性大幅增加，值得引起重视和注意，本文对此种现象产生的原因进行了详细探讨.PM/BS系统降解污染物需要控制在酸性条件下进行，既能增大降解效率，又能降低DBPs的毒性.

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