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首页> 外文期刊>Environmental Science & Technology >Stimulative Effects of Oxone on a Biofilter Treating Gaseous Chlorobenzene
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Stimulative Effects of Oxone on a Biofilter Treating Gaseous Chlorobenzene

机译：Oxone对生物滤池处理气态氯苯的刺激作用。

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摘要

Recalcitrant volatile organic compounds with low biode-gradabilities pose challenges for biofiltration technologies. In this study, the effects and mechanism of adding ozone on the performance of a biofilter were investigated. A biofilter treating chlorobenzene was set up and operated continuously for 265 days under different inlet ozone concentrations. Results showed that ozone below 120 mg m~(-3) could notably enhance the biofilter performance. The average chlorobenzene removal efficiency increased from 40 to 70% and then to 90% while the inlet ozone concentration rose from 0 to 40 mg m~(-3) and 120 mg m~(-3). Reducing ozone concentration resulted in a decrease in removal efficiency from 90 to 40%. Further analysis indicated that the thickness and extra-cellular polymer substance content of the biofilm were remarkably reduced while inlet ozone concentration was gradually increased. Meanwhile, the specific surface areas of the filter bed were found to increase from 784 to 820 and 880 m~2 m~(-3). A respiratory quinone profile showed that the dominant quinone shifted from ubiquinone-8 to menaquinone-9(H_2) after ozone was added. This indicated that some Gram-positive bacteria with thick cell wall became the dominant species under ozone compression.
机译：具有低生物降解性的顽固性挥发性有机化合物对生物过滤技术提出了挑战。在这项研究中，研究了添加臭氧对生物滤池性能的影响和机理。设置了处理氯苯的生物滤池，并在不同的进口臭氧浓度下连续运行265天。结果表明，低于120 mg m〜（-3）的臭氧可以显着提高生物滤池的性能。平均氯苯去除率从40％上升到70％，然后达到90％，而进口臭氧浓度从0上升到40 mg m〜（-3）和120 mg m〜（-3）。降低臭氧浓度导致去除效率从90％降低到40％。进一步的分析表明，生物膜的厚度和细胞外聚合物物质含量显着降低，而进口臭氧浓度逐渐升高。同时，发现滤床的比表面积从784增加到820和880 m〜2 m〜（-3）。呼吸醌谱显示，加入臭氧后，显性醌从泛醌8变为甲萘醌9（H_2）。这表明在臭氧压缩下，一些细胞壁较厚的革兰氏阳性细菌成为优势菌。

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  • 来源
    《Environmental Science & Technology》 |2009年第24期|9407-9412|共6页
  • 作者

    CAN WANG; JIN-YING XI; HONG-YING HO; YUAN YAO;

  • 作者单位

    Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China;

    Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China;

    Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China;

    Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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