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热传导强化气相抽提处理苯系物污染土壤实验

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朱杰, 罗启仕, 李心倩. 热传导强化气相抽提处理苯系物污染土壤实验[J]. 环境化学, 2013, 32(8): 1546-1553. doi: 10.7524/j.issn.0254-6108.2013.08.020
引用本文: 朱杰, 罗启仕, 李心倩. 热传导强化气相抽提处理苯系物污染土壤实验[J]. 环境化学, 2013, 32(8): 1546-1553. doi: 10.7524/j.issn.0254-6108.2013.08.020
shu
ZHU Jie, LUO Qishi, LI Xinqian. Thermodesorption of BTEX-contaminated soil using heat conduction[J]. Environmental Chemistry, 2013, 32(8): 1546-1553. doi: 10.7524/j.issn.0254-6108.2013.08.020
Citation: ZHU Jie, LUO Qishi, LI Xinqian. Thermodesorption of BTEX-contaminated soil using heat conduction[J]. Environmental Chemistry, 2013, 32(8): 1546-1553. doi: 10.7524/j.issn.0254-6108.2013.08.020
shu

热传导强化气相抽提处理苯系物污染土壤实验

  • 1.

    上海市环境科学研究院, 上海, 200233

  • 基金项目:

    上海市环保局重点项目(2012-07)

    上海市环保局青年创新基金项目(2013-60)资助.

Thermodesorption of BTEX-contaminated soil using heat conduction

  • 1.

    Shanghai Academy of Environmental Sciences, Shanghai, 200233, China

  • Fund Project:

  • 摘要: 以苯系物(BTEX)污染土壤为研究对象,研究加热源功率和加热时间对土壤苯系物去除率的影响;实验通过分析尾气和冷凝水的污染物浓度来判断实验的终止时间点.结果显示,在3个功率100、200 W和400 W作用下,各污染物的残留浓度较低,所需要的处理时间分别为168.5、122.5 h以及104 h,消耗的总电能分别为:0.49、0.56 KW·h·Kg-1TS以及0.81 kW·h·Kg-1TS.功率越高,土壤中BTEX去除效率越高,同时能耗也越大.实验通过分析处理前后土壤中有机质含量,发现在加热的条件下有机质会逐渐减少,功率越高,有机质去除的速率越快,越有利于污染物的去除.本文的结果可证实通过加热可有效提高土壤中苯系物的气相抽提去除效率,对现场中试的开展提供参数依据.
    Abstract: In this paper, thermodesorption of BTEX-contaminated soil using heat conduction was investigated. Essential processing parameters such as heating power and heating time were examined. The concentrations of the exhaust gas and condensate were analyzed to determine the termination point of the experiment. The results reveal that using three distinct heating powers, the removal rate for all BTEX contaminants were considerady low. More importantly, the treatment duration and the total energy consuption for 100 W, 200 W and 400 W were 168.5 h, 122.5 h, 104 h and 0.49,0.56,0.81 kW·h-1·kg-1TS, indicating that the highest energy power input consumed the highest energy. The change in soil organic matter concentration after the treatment was investigated. It was shown that the organic matter concentration gradually reduced under the heating condition, and the rate of the organic matter removal was directly proportional to the power, and more conducive to degradation of the contaminants. The results in this study confirmed that thermal desorption of BTEX can be enhanced by using heating conduction.
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  • [1] Nora B, Sutton J, Tim C. Efforts to improve coupled in situ chemical oxidation with bioremediation: A review of optimization strategies[J]. Journal of Soils and Sediments, DOI 10.1007/s11368-010-0272-9
    [2] Chapelle F H. Behavior of a chlorinated ethane plume following source-area treatment with Fenton's reagent[J]. Ground Water Monitoring and Remediation, 2005, 25:131-141
    [3] Kulik N, Goi A, Trapido M, Tuhkanen T. Degradation of polycyclic aromatic hydrocarbons by combined chemical pre-oxidation and bioremediation in creosote contaminated soil[J]. Journal of Environmental Management, 2006, 78:382-391
    [4] Vinegar H J, Coles J M, Menotti J L. In situ thermal desorption of coal tar[C]. IGT/GRI International Symposium on Environmental Biotechnologies and Site Remediation Technologies, Orlando, Florida, December 7-9, 1998
    [5] Heron G, Parker K, Galligan J, et al. Thermal treatment of eight CVOC source zones to near nondetect concentrations[J]. Ground Water Monitoring & Remediation. 2009, 29(3): 56-65
    [6] Uzgiris E E, Edelstein W A, Philipp H R, et al. Complex thermal desorption of PCBs from soil[J]. Chemosphere, 1995, 30(2), 377-387
    [7] Iben I E T, Edelstein W A, Sheldon R B, et al. Thermal blanket for in-situ remediation of surficial contamination: A pilot test[J]. Environmental Science & Technology, 1996, 30(11), 3144-3154
    [8] 周友亚, 贺晓珍, 李发生,等. 气相抽提去除红壤中挥发性有机污染物的去污机理探讨[J]. 环境化学, 2010,29(1): 39-43
    [9] 刘少卿,姜林,李艳霞,等.挥发及半挥发有机物污染场地蒸汽抽提修复技术原理与影响因素[J].环境科学,2011,32(3):824-833
    [10] 殷甫祥, 张胜田, 赵欣.气相抽提法(SVE)去除土壤中挥发性有机污染物的实验研究[J].环境科学,2011,32(5):1454-1461
    [11] Vinegar H J. In situ thermal desorption (ISTD) of PCBs[C]. Proceedings of the HazWaste/World Superfund XVIII Conference, Washington, D C, December 2, 1997
    [12] Soares A A, Albergaria J T, Domingues V F, et al. Remediation of soils combining soil vapor extraction and bioremediation:benzene[J]. Chemosphere, 2010, 80:823-828
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  • 收稿日期:  2012-12-24
朱杰, 罗启仕, 李心倩. 热传导强化气相抽提处理苯系物污染土壤实验[J]. 环境化学, 2013, 32(8): 1546-1553. doi: 10.7524/j.issn.0254-6108.2013.08.020
引用本文: 朱杰, 罗启仕, 李心倩. 热传导强化气相抽提处理苯系物污染土壤实验[J]. 环境化学, 2013, 32(8): 1546-1553. doi: 10.7524/j.issn.0254-6108.2013.08.020
shu
ZHU Jie, LUO Qishi, LI Xinqian. Thermodesorption of BTEX-contaminated soil using heat conduction[J]. Environmental Chemistry, 2013, 32(8): 1546-1553. doi: 10.7524/j.issn.0254-6108.2013.08.020
Citation: ZHU Jie, LUO Qishi, LI Xinqian. Thermodesorption of BTEX-contaminated soil using heat conduction[J]. Environmental Chemistry, 2013, 32(8): 1546-1553. doi: 10.7524/j.issn.0254-6108.2013.08.020
shu

热传导强化气相抽提处理苯系物污染土壤实验

  • 1. 上海市环境科学研究院, 上海, 200233
  • 收稿日期:  2012-12-24
基金项目:

上海市环保局重点项目(2012-07)

上海市环保局青年创新基金项目(2013-60)资助.

摘要: 以苯系物(BTEX)污染土壤为研究对象,研究加热源功率和加热时间对土壤苯系物去除率的影响;实验通过分析尾气和冷凝水的污染物浓度来判断实验的终止时间点.结果显示,在3个功率100、200 W和400 W作用下,各污染物的残留浓度较低,所需要的处理时间分别为168.5、122.5 h以及104 h,消耗的总电能分别为:0.49、0.56 KW·h·Kg-1TS以及0.81 kW·h·Kg-1TS.功率越高,土壤中BTEX去除效率越高,同时能耗也越大.实验通过分析处理前后土壤中有机质含量,发现在加热的条件下有机质会逐渐减少,功率越高,有机质去除的速率越快,越有利于污染物的去除.本文的结果可证实通过加热可有效提高土壤中苯系物的气相抽提去除效率,对现场中试的开展提供参数依据.

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