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首页> 外文期刊>Journal of Contaminant Hydrology >Effects of fluctuations in river water level on virus removal by bank filtration and aquifer passage - A scenario analysis
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Effects of fluctuations in river water level on virus removal by bank filtration and aquifer passage - A scenario analysis

机译：河流水位波动对堤岸过滤和含水层通过去除病毒的影响-情景分析

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摘要

Riverbank filtration is an effective process for removing pathogenic viruses from river water. Despite indications that changing hydraulic conditions during floods can affect the efficacy of riverbank filtration to remove viruses, the impact on advection and dispersion of viruses in the riverbank is not well understood. We investigated the effects of fluctuations in river water level on virus transport during riverbank filtration, considering 3-D transient groundwater flow and virus transport. Using constant removal rates from published field experiments with bacteriophages, removal of viruses with distance from the riverbank was simulated for coarse gravel, fine gravel and fine sandy gravel.Our simulations showed that, in comparison with steady flow conditions, fluctuations in river water level cause viruses to be transported further at higher concentrations into the riverbank. A 1-5 m increase in river water levels led to a 2- to 4-log (log_(10)reduction in concentration relative to the initial concentration in the river) increase in virus concentration and to up to 30 % shorter travel times. For particular cases during the receding flood, changing groundwater flow conditions caused that pristine groundwater was carried from further inland and that simulated virus concentrations were more diluted in groundwater. Our study suggests that the adverse effect of water level fluctuations on virus transport should be considered in the simulation of safe setback distances for drinking water supplies.
机译：河岸过滤是从河水中去除病原病毒的有效方法。尽管有迹象表明洪水期间水力状况的变化会影响河岸过滤去除病毒的功效，但对病毒在河岸平流和扩散的影响尚不甚了解。考虑到3D瞬态地下水流量和病毒迁移，我们调查了河水位波动对河岸过滤过程中病毒迁移的影响。使用已发表的使用噬菌体进行的现场实验的恒定去除率，模拟了从河岸到远处的粗砾石，细砾石和细沙砾石的病毒去除。我们的模拟表明，与稳定流动的条件相比，河流水位的波动引起了病毒将以更高的浓度进一步运输到河岸。河流水位增加1-5 m导致病毒浓度增加2至4个对数（相对于河流中的初始浓度，log_（10）浓度降低），并且旅行时间最多缩短了30％。对于洪水后退的特殊情况，不断变化的地下水流条件导致原始的地下水从更远的内陆运来，模拟的病毒浓度在地下水中被进一步稀释。我们的研究表明，在模拟饮用水供应的安全倒退距离时，应考虑水位波动对病毒传播的不利影响。

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  • 来源
    《Journal of Contaminant Hydrology》 |2013年第4期|34-44|共11页
  • 作者

    J. Derx; A.P. Blaschke; A.H. Farnleitner; L Pang; G. Bloeschl; J.F. Schijven;

  • 作者单位

    Institute of Hydraulic Engineering and Water Resources Management, E222/2, Karlsplau 13 A-1040 Vienna. Austria,Centre for Water Resource Systems (CWRS), Vienna University of Technology, Vienna, Austria,Interuniversity Cooperation Centre Water and Health, Vienna University of Technology, Austria;

    Institute of Hydraulic Engineering and Water Resources Management, E222/2, Karlsplau 13 A-1040 Vienna. Austria,Centre for Water Resource Systems (CWRS), Vienna University of Technology, Vienna, Austria,Interuniversity Cooperation Centre Water and Health, Vienna University of Technology, Austria;

    Centre for Water Resource Systems (CWRS), Vienna University of Technology, Vienna, Austria,Institute for Chemical Engineering, Research Area Applied Biochemistry and Gene Technology, Research Croup Environmental Microbiology and Molecular Ecology,Vienna University of Technology, Vienna, Austria,Interuniversity Cooperation Centre Water and Health, Vienna University of Technology, Austria;

    Institute of Environmental Science & Research Ltd., P.O. Box 29I81, Christchurch, New Zealand;

    Institute of Hydraulic Engineering and Water Resources Management, E222/2, Karlsplau 13 A-1040 Vienna. Austria,Centre for Water Resource Systems (CWRS), Vienna University of Technology, Vienna, Austria;

    Expert Centre for Methodology and Information Services. National Institute of Public Health and the Environment (RIVM), P.O. Box 1,3720 BA Bilthoven, The Netherlands,Department of Earth Sciences, Utrecht University, P.O. Box 80021,3508 TA Utrecht. The Netherlands;

  • 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
  • 中图分类
  • 关键词

    virus removal; river fluctuation; riverbank nitration; groundwater model; dispersion;

    机译：病毒去除河流波动河岸硝化地下水模型分散;

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