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首页> 外文期刊>Environmental Engineering Science >Simulation of the Dispersion of VOC from an MSW Landfill via a Lagrangian Particle Model: Efficiency of a Solid Barrier
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Simulation of the Dispersion of VOC from an MSW Landfill via a Lagrangian Particle Model: Efficiency of a Solid Barrier

机译：通过拉格朗日粒子模型模拟MSW垃圾填埋场中VOC的扩散：固体屏障的效率

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摘要

A critical aspect of odor assessments in municipal solid wastes (MSW) landfills is modeling to define exposure characteristics in affected communities. In many cases, odor dispersion is influenced by complex or nonsteady-state meteorology that cannot be represented by the commonly used dispersion models, based on a steady-state Gauss plume assumption, which is often inaccurate. Recent developments in modeling of local meteorology have enabled far more realistic predictions of odor dispersion. Three-dimensional models have been successfully applied to improve the predictions of odor impact and to better define the parameters for odor control options. One of these options is solid walls to deflect the winds that blow to the direction of residential areas. This article presents a way to compute the efficiency of such a method by means of the numerical simulation of the effect of a hypothetical solid barrier on the dispersion of odorous compounds in a real MSW landfill in Vacarisses, Spain. The dispersion of air pollutants coming from one or more point sources have been simulated using a combination of a diagnostic model for generating wind fields and a Lagrange-particle model for dispersion. Results show that the efficiency of a solid barrier of up to 40 m high as VOC deflector is practically null or even may help to increase emission concentrations in some control points.
机译：城市固体废物（MSW）垃圾填埋场中气味评估的一个关键方面是建模，以定义受影响社区的暴露特征。在许多情况下，基于稳定的高斯羽流假设（通常是不准确的），气味的扩散受复杂的或非稳态的气象学的影响，而复杂的或非稳态的气象学无法用常用的扩散模型来表示。本地气象学建模的最新进展使气味扩散的预测更加现实。三维模型已成功应用于改善气味影响的预测并更好地定义气味控制选项的参数。这些选择之一是坚固的墙壁，以偏转吹向住宅区方向的风。本文提供了一种方法的计算方法，该方法通过对假设的固体屏障对西班牙Vacarisses真实MSW垃圾填埋场中有味化合物扩散的影响进行数值模拟的方法来进行计算。来自一个或多个点源的空气污染物的扩散已使用生成风场的诊断模型和用于扩散的拉格朗日粒子模型的组合进行了模拟。结果表明，高达40 m的固体屏障（VOC偏转器）的效率实际上为零，甚至可能有助于提高某些控制点的排放浓度。

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