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首页> 外文期刊>Waste management & research >Evaluating effects of wind-induced pressure fluctuation s on soil-atmosphere gas exchange at a landfill using stochastic modelling
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Evaluating effects of wind-induced pressure fluctuation s on soil-atmosphere gas exchange at a landfill using stochastic modelling

机译：利用随机模型评估风压波动s对垃圾填埋场土壤-气体交换的影响

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摘要

The impact of wind turbulence-induced pressure fluctuations at the soil surface on landfill gas transport and emissions to the atmosphere at an old Danish landfill site was investigated using stochastic modelling combined with soil property and gas transport data measured at the site. The impacts of soil physical properties (including air permeability and volumetric water content) and wind-induced pressure fluctuation properties (amplitude and temporal correlation) on landfill gas emissions to the atmosphere were evaluated. Soil-air permeability and pressure fluctuation amplitude were found to be the most important parameters. Wind-induced gas emissions were further compared with gas emissions caused by diffusion and by long-term pressure variations (due to passing weather systems). Here diffusion and wind-induced gas transport were found to be equally important with wind-induced gas transport becoming the most important at lower soil-air contents.
机译：利用随机模型，结合土壤特性和在该地点测得的气体传输数据，研究了由风湍流引起的土壤表面压力波动对丹麦旧垃圾填埋场的垃圾填埋气运输和向大气排放的影响。评估了土壤物理性质（包括透气性和体积水含量）和风致压力波动性质（幅度和时间相关性）对垃圾填埋场向大气排放的影响。发现土壤透气性和压力波动幅度是最重要的参数。将由风引起的气体排放与由扩散和长期压力变化（由于天气系统过去）引起的气体排放进行了比较。在此发现，扩散和风致气体传输同等重要，而风致气体传输在土壤空气含量较低时变得最为重要。

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