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首页> 外文期刊>Environmental Science & Technology >Upscaling Transport of Bacillus subtilis Endospores and Coliphage phiX174 in Heterogeneous Porous Media from the Column to the Field Scale
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Upscaling Transport of Bacillus subtilis Endospores and Coliphage phiX174 in Heterogeneous Porous Media from the Column to the Field Scale

机译：从柱子到现场尺度的非均相多孔介质中升级的枯草芽孢杆菌胚胎孢子和Coliphage phix174的升高

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摘要

Groundwater contamination and transport of viruses and bacteria in aquifers are a major concern worldwide. To ascertain the ability of these aquifers to remove pathogens, tracer tests with microbial surrogates are carried out. These tests are laborious and may require special permits, and therefore, column tests are often done instead. Unfortunately, results from column tests tend to grossly overestimate removal rates when compared to the field scale, which can lead to an underestimation of groundwater contamination risks. Scale is an important consideration when examining pathogen transport through porous media, as pathogen removal is rarely a linear process. In this study, field tests were carried out with endospores of Bacillus subtilis and coliphage phiX174 over a distance of 25 m in an alluvial gravel aquifer near Vienna, Austria. The sandy gravel material from the field site was also used in column tests with the same tracers. Both attachment-detachment and colloid filtration theory were used to model these tests, as well as log-removal rates per meter. The results show that the spatial removal rate (log/m) is approximately 2 orders of magnitude higher on the column scale, when compared to the field. A comparison with the literature showed a correlation between the heterogeneity of the porous media and the difference in removal rates between the column and field scale.
机译：地下水污染和含水层中病毒和细菌的运输是全球范围内的主要关注点。为了确定这些含水层去除病原体的能力，进行了用微生物替代物的跟踪试验。这些测试是费力的，可能需要特殊许可，因此，通常进行列测试。遗憾的是，与现场规模相比，柱试验的结果往往会越来越高估除去速率，这可能导致低估地下水污染风险。 SCALE是通过多孔介质检查病原体传输时的重要考虑因素，因为病原体去除很少是线性过程。在本研究中，在奥地利维也纳附近的冲积砾石含水层的距离为25米的芽孢杆菌和Coliphage phix174中进行现场试验。来自现场部位的砂岩材料也用于具有相同示踪剂的柱测试。附着 - 脱离和胶体过滤理论都用于模拟这些测试，以及每米的记录速率。结果表明，与该字段相比，空间去除速率（Log / M）在列尺度上大约高出2个级别。与文献的比较表明多孔介质的异质性与柱与场比例之间的去除率的差异之间的相关性。

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  • 来源
    《Environmental Science & Technology》 |2021年第16期|11060-11069|共10页
  • 作者

    Thomas J. Oudega; Gerhard Lindner; Julia Derx; Andreas H. Farnleitner; Regina Sommer; Alfred P. Blaschke; Margaret E. Stevenson;

  • 作者单位

    Institute of Hydraulic Engineering and Water Resources Management E222/2 TU Wien A-1040 Vienna Austria Interuniversity Cooperation Centre (ICC) Water & Health A-1060 Vienna Austria;

    Institute of Hydraulic Engineering and Water Resources Management E222/2 TU Wien A-1040 Vienna Austria Medical University of Vienna Institute for Hygiene and Applied Immunology Water Hygiene A-1090 Vienna Austria Interuniversity Cooperation Centre (ICC) Water & Health A-1060 Vienna Austria;

    Institute of Hydraulic Engineering and Water Resources Management E222/2 TV Wien A-1040 Vienna Austria Interuniversity Cooperation Centre (ICC) Water & Health A-1060 Vienna Austria;

    Research Group Environmental Microbiology and Molecular Diagnostics 166/5/3 Institute of Chemical Environmental and Bioscience Engineering TU Wien A-1060 Vienna Austria Karl Landsteiner University for Health Sciences Department Physiology Pharmacology and Microbiology Research Division Water Quality & Health 3500 Krems Austria Interuniversity Cooperation Centre (ICC) Water & Health A-1060 Vienna Austria;

    Medical University of Vienna Institute for Hygiene and Applied Immunology Water Hygiene A-1090 Vienna Austria Interuniversity Cooperation Centre (ICC) Water & Health A-1060 Vienna Austria;

    Institute of Hydraulic Engineering and Water Resources Management E222/2 TU Wien A-1040 Vienna Austria Interuniversity Cooperation Centre (ICC) Water & Health A-1060 Vienna Austria;

    Institute of Hydraulic Engineering and Water Resources Management E222/2 TU Wien A-1040 Vienna Austria Interuniversity Cooperation Centre (ICC) Water & Health A-1060 Vienna Austria;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    microbial tracer tests; upscaling column to field; 3D colloidal transport modeling;

    机译：微生物示踪试验;upscaling列到字段;3D胶体运输建模;

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