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首页> 外文期刊>Journal of Material Cycles and Waste Managemen >Hydrologic evaluation of landfill performance (HELP) modeling in bioreactor landfill design and permitting
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Hydrologic evaluation of landfill performance (HELP) modeling in bioreactor landfill design and permitting

机译：生物反应器垃圾填埋场设计和许可中的垃圾填埋场性能（HELP）模型的水文评估

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摘要

The practice of operating municipal solid waste landfills as bioreactor landfills has become more common over the past decade. Because simulating moisture balance and flow is more critical in such landfills than in dry landfills, researchers have developed methods to address this problem using the hydrologic evaluation of landfill performance (HELP) model. This paper discusses three methods of applying the HELP model to simulate the percolation of liquids added to landfill waste: the leachate recirculation feature (LRF), the subsurface inflow (SSI) feature, and additional rainfall to mimic liquids addition. The LRF is simple to use but may not be able to bring the landfill to bioreactor conditions. The SSI feature provides a convenient user interface for modeling liquids addition to each layer. The additional rainfall feature provides flexibility to the model, allowing users to estimate the leachate generation rate and the leachate head on bottom liner associated with daily variation in the liquids addition rate. Additionally, this paper discusses several issues that may affect the HELP model, such as the time of model simulation, layers of liquids addition, and the limitations of the HELP model itself. Based on the simulation results, it is suggested that the HELP model should be run over an extended period of time after the cessation of liquids addition in order to capture the peak leachate generation rate and the head on the liner (HOL). From the perspectives of leachate generation and the HOL, there are few differences between single-layer injection and multiple-layer injection. This paper also discusses the limitations of using the HELP model for designing and permitting bioreactor landfills.
机译：在过去的十年中，将市政固体垃圾填埋场作为生物反应器垃圾填埋场的做法已变得越来越普遍。由于在这种垃圾填埋场中模拟水分平衡和流动比在干垃圾填埋场中更为重要，因此研究人员已经开发出了利用水文评估垃圾填埋场性能（HELP）模型解决该问题的方法。本文讨论了三种应用HELP模型来模拟添加到垃圾填埋场中的液体渗滤的方法：渗滤液再循环特征（LRF），地下流入量（SSI）特征以及用于模拟液体添加的额外降雨。 LRF易于使用，但可能无法将垃圾填埋场置于生物反应器中。 SSI功能提供了方便的用户界面，用于对添加到每一层的液体进行建模。附加的降雨功能为模型提供了灵活性，允许用户估计渗滤液的生成速率和底衬上渗滤液的压头，这些渗滤液的生成与液体添加速率的每日变化相关。此外，本文讨论了可能影响HELP模型的几个问题，例如模型仿真的时间，液体添加的层数以及HELP模型本身的局限性。根据模拟结果，建议在停止添加液体后应在更长的时间内运行HELP模型，以捕获峰值渗滤液生成速率和衬管上的压头（HOL）。从渗滤液生成和HOL的角度来看，单层注入和多层注入之间几乎没有区别。本文还讨论了使用HELP模型设计和允许生物反应器垃圾填埋场的局限性。

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    Qiyong Xu; Hwidong Kim; Pradeep Jain; Timothy G. Townsend;

  • 作者单位

    Innovative Waste Consulting Services, LLC, 6628 NW 9th Blvd. Suite 3, Gainesville, FL 32605, USA,Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy,Peking University Shenzhen Graduate School,518055 Shenzhen, China;

    Department of Environmental Engineering Sciences, University of Florida, P.O. Box 116450, Gainesville,FL 32611-6450, USA;

    Innovative Waste Consulting Services, LLC, 6628 NW 9th Blvd. Suite 3, Gainesville, FL 32605, USA;

    Department of Environmental Engineering Sciences, University of Florida, P.O. Box 116450, Gainesville,FL 32611-6450, USA;

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  • 正文语种 eng
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  • 关键词

    HELP model; bioreactor landfill; water balance; leachate recirculation;

    机译：帮助模型;生物反应器垃圾填埋场;水平衡渗滤液再循环;

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