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首页> 外文期刊>Environmental Science & Technology >Dynamically Coupled 3D Pollutant Dispersion Model for Assessing Produced Water Discharges in the Canadian Offshore Area
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Dynamically Coupled 3D Pollutant Dispersion Model for Assessing Produced Water Discharges in the Canadian Offshore Area

机译：动态耦合3D污染物扩散模型，用于评估加拿大近海地区的产出水排放量

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摘要

Produced water is the contaminated water that is brought to the surface in the process of recovering oil and gas. On the basis of discharge volume, this type of contaminated water is the largest contributor to the offshore waste stream. Modeling studies of large amounts of wastewater discharge into offshore areas have helped in the understanding of pollutant dispersion behaviors in marine environments and in further evaluating the potential environmental effects resulting from produced water discharges. This study presents an integrated three-dimensional (3D) approach for the simulation of produced water discharges in offshore areas. Specifically, an explicit second-order finite difference method was used to model the far-field pollutant dispersion behavior, and this method was coupled with the jet-plume model JETLAG with an extension of the 3D cross-flow conditions to simulate the near-field mixing processes. A dynamic coupling technique with full consideration of the interaction between the discharged fluids and receiving waters was employed in the model. A case study was conducted on the Grand Banks of Newfoundland, Canada. The field validation of the modeling results was conducted for both the near-field and far-field dispersion processes, and the modeling results were in good agreement with the field observations. This study provides an integrated system tool for the simulation of complex transport processes in offshore areas, and the results from such modeling systems can be further used for the risk assessment analysis of the surface water environment.
机译：采出水是在油气回收过程中带到地表的污染水。根据排放量，这种类型的污水是近海废物流的最大来源。对大量排入近海区域的废水进行的模型研究有助于理解海洋环境中的污染物扩散行为，并有助于进一步评估因产生的废水而产生的潜在环境影响。这项研究提出了一种集成的三维（3D）方法，用于模拟近海地区的产出水排放。具体而言，使用显式二阶有限差分方法对远场污染物扩散行为进行建模，并将此方法与射流模型JETLAG结合，并扩展了3D错流条件，以模拟近场混合过程。在模型中采用了动态耦合技术，其中充分考虑了排出的流体和接收的水之间的相互作用。在加拿大纽芬兰大银行进行了案例研究。对近场和远场弥散过程均进行了建模结果的现场验证，建模结果与现场观测结果吻合良好。这项研究提供了一个集成的系统工具，用于模拟近海地区的复杂运输过程，这种建模系统的结果可以进一步用于地表水环境的风险评估分析。

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  • 来源
    《Environmental Science & Technology》 |2013年第3期|1434-1442|共9页
  • 作者

    Lin Zhao; Zhi Chen; Kenneth Lee;

  • 作者单位

    Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec H3G 1M8, Canada;

    Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec H3G 1M8, Canada;

    Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, Nova Scotia, B2Y 4A2, Canada;

  • 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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