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温度对生物活性炭降解卤乙酸的影响

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唐顺, 杨宏伟, 林禄辉, 王小(亻毛), 解跃峰. 温度对生物活性炭降解卤乙酸的影响[J]. 环境工程学报, 2014, 8(8): 3161-3166.
引用本文: 唐顺, 杨宏伟, 林禄辉, 王小(亻毛), 解跃峰. 温度对生物活性炭降解卤乙酸的影响[J]. 环境工程学报, 2014, 8(8): 3161-3166.
shu
Tang Shun, Yang Hongwei, Lin Luhui, Wang Xiaomao, Xie Yuefeng. Effect of temperature on haloacetic acid degradation by biologically active carbon[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3161-3166.
Citation: Tang Shun, Yang Hongwei, Lin Luhui, Wang Xiaomao, Xie Yuefeng. Effect of temperature on haloacetic acid degradation by biologically active carbon[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3161-3166.
shu

温度对生物活性炭降解卤乙酸的影响

  • 1.

    清华大学环境学院, 北京 100084

  • 2.

    美国宾州州立大学州府学院环境系, 宾夕法尼亚 17057

  • 基金项目:

    环境模拟与污染控制国家重点联合实验室专项基金项目（11Z01ESPCT）

  • 中图分类号: X522

Effect of temperature on haloacetic acid degradation by biologically active carbon

  • 1.

    School of Environment, Tsinghua University, Beijing 100084, China

  • 2.

    Environmental Programs, the Pennsylvania State University, 777 West Harrisburg Pike, Middletown, PA17057, USA

  • Fund Project:

  • 摘要: 卤乙酸（HAAs）是饮用水中常见的氯和氯胺消毒副产物，具有较高的亲水性与致癌性，为了保证水质与人体健康，各国均对其制定了相关规定。考察了生物活性碳（BAC）对9种HAA的去除性能，并探讨HAA生物降解效果随温度的变化情况与生物反应的去除机理，反应动力学与热力学。结果显示，BAC可有效去除水体中的一卤代与二卤代乙酸，难以去除三卤代乙酸。BAC的生物降解性能明显可分为2个部分：低温（5~15℃）基本不发生生物降解；高温（25~35℃）生物降解性能显著。在不同温度下，HAA的生物降解均符合一级反应动力学，反应速率常数为0.01~0.40 min-1；BAC降解HAA的过程不是逐级氢取代卤而是同时脱去所有卤素的反应，卤代乙酸生物反应的活化能为63.5~89.2 kJ/mol。
    Abstract: Haloacetic acids (HAAs), as ubiquitous disinfection byproducts in drinking water using chlorination and chloramination and with high hydrophilicity and carcinogenicity, have been regulated to ensure water quality and human health all over the world. The removal of nine HAAs by biologically active carbon (BAC) was investigated. The effect of temperature on HAA biodegradablities and HAA removal mechanism, reaction kinetics and thermodynamics were also discussed in this study. It demonstrated that BAC could availably remove mono-and di-HAAs but was hard to degrade tri-HAAs. When the water temperature ranged from 5 to 15℃, the concentration of HAAs was almost constant, but in warmer water between 25 and 35℃, HAA was prone to degradation by BAC. Under various temperatures, the HAA biodegradation conformed to first order reaction kinetics with rate constants from 0.01 to 0.40 min-1. The HAA removal mechanism was not halogen sequentially replaced by hydrogen but all halogens of HAAs removed simultaneously. The activation energy of HAA biodegradations ranged from 63.5 to 89.2 kJ/mol.
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  • [1] 张晓健, 李爽. 消毒副产物总致癌风险的首要指标参数——卤乙酸. 给水排水, 2000, 26(8): 1-5 Zhang X.J., Li S. Haloacetic acids as an indicator of the total carcinogentic risk of disinfection byproducts. Water & Waster Engineering, 2000, 26(8): 1-5 (in Chinese)
    [2] 代莎莎, 张春阳, 刘建广, 等. 饮用水消毒副产物的去除途径及进展. 水资源与水工程学报,2006, 17(3): 72-75 Dai S.S., Zhang C.Y., Liu J.G., et al. Removal method and progress of disinfection byproducts in drinking water. Journal of Water Resource & Water Engineering, 2006, 17(3): 72-75 (in Chinese)
    [3] Tung H.H., Xie Y.F. Association between haloacetic acid degradation and heterotrophic bacteria in water distribution systems. Water Research, 2009, 43(4): 971-978
    [4] Zhang P., LaPara T.M., Goslan E.H., et al. Biodegradation of haloacetic acids by bacterial isolates and enrichment cultures from drinking water systems. Environmental Science & Technology, 2009, 43(9): 3169-3175
    [5] 汪昆平. GAC吸附及AOPs去除水中HAAs及其机理研究. 重庆:重庆大学博士学位论文, 2005. 40-60 Wang K.P. The HAA removal from water and the mechanism studies with GAC adsorption and AOPs. Chongqing: Doctor Dissertation of Chongqing University, 2005. 40-60 (in Chinese)
    [6] Wu H.W., Xie Y.F. Effects of EBCT and water temperature on HAA removal using BAC. Journal of Amercian Water Work Association, 2005, 97(11): 94-101
    [7] Method 552.3: Determination of Haloacetic Acids and Dalapon in Drinking Water by Liquid-Liquid Microextraction, Derivatization and Gas Chromatography with Electron Capture Detection. Environmental Monitoring and System Laboratory, United States Environmental Protection Agency, Cincinnati, OH, USA, 2003
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    [9] Ye B., Wang W., Yang L. Factors influencing disinfection by-products formation in drinking water of six cities in China. Journal of Hazardous Materials, 2009, 171(1-3): 147-152
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  • 收稿日期:  2013-10-12
  • 刊出日期:  2014-07-31
唐顺, 杨宏伟, 林禄辉, 王小(亻毛), 解跃峰. 温度对生物活性炭降解卤乙酸的影响[J]. 环境工程学报, 2014, 8(8): 3161-3166.
引用本文: 唐顺, 杨宏伟, 林禄辉, 王小(亻毛), 解跃峰. 温度对生物活性炭降解卤乙酸的影响[J]. 环境工程学报, 2014, 8(8): 3161-3166.
shu
Tang Shun, Yang Hongwei, Lin Luhui, Wang Xiaomao, Xie Yuefeng. Effect of temperature on haloacetic acid degradation by biologically active carbon[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3161-3166.
Citation: Tang Shun, Yang Hongwei, Lin Luhui, Wang Xiaomao, Xie Yuefeng. Effect of temperature on haloacetic acid degradation by biologically active carbon[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3161-3166.
shu

温度对生物活性炭降解卤乙酸的影响

  • 1.  清华大学环境学院, 北京 100084
  • 2.  美国宾州州立大学州府学院环境系, 宾夕法尼亚 17057
  • 收稿日期:  2013-10-12
基金项目:

环境模拟与污染控制国家重点联合实验室专项基金项目（11Z01ESPCT）

摘要: 卤乙酸（HAAs）是饮用水中常见的氯和氯胺消毒副产物，具有较高的亲水性与致癌性，为了保证水质与人体健康，各国均对其制定了相关规定。考察了生物活性碳（BAC）对9种HAA的去除性能，并探讨HAA生物降解效果随温度的变化情况与生物反应的去除机理，反应动力学与热力学。结果显示，BAC可有效去除水体中的一卤代与二卤代乙酸，难以去除三卤代乙酸。BAC的生物降解性能明显可分为2个部分：低温（5~15℃）基本不发生生物降解；高温（25~35℃）生物降解性能显著。在不同温度下，HAA的生物降解均符合一级反应动力学，反应速率常数为0.01~0.40 min-1；BAC降解HAA的过程不是逐级氢取代卤而是同时脱去所有卤素的反应，卤代乙酸生物反应的活化能为63.5~89.2 kJ/mol。

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