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首页> 外文期刊>Environmental Science & Technology >Heat Generation and Accumulation in Municipal Solid Waste Landfills
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Heat Generation and Accumulation in Municipal Solid Waste Landfills

机译：城市生活垃圾填埋场的热量产生和积累

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摘要

There have been reports of North American landfills that are experiencing temperatures in excess of 80—100 °C. However, the processes causing elevated temperatures are not well understood. The objectives of this study were to develop a model to describe the generation, consumption and release of heat from landfills, to predict landfill temperatures, and to understand the relative importance of factors that contribute to heat generation and accumulation. Modeled heat sources include energy from aerobic and anaerobic biodegradation, anaerobic metal corrosion, ash hydration and carbonation, and acid—base neutralization. Heat removal processes indude landfill gas convection, infiltration, leachate collection, and evaporation. The landfill was treated as a perfectly mixed batch reactor. Model predictions indicate that both anaerobic metal corrosion and ash hydration/carbonation contribute to landfill temperatures above those estimated from biological reactions alone. Exothermic pyrolysis of refuse, which is hypothesized to be initiated due to a local accumulation of heat, was modeled empirically to illustrate its potential impact on heat generation.
机译：有报道称，北美垃圾填埋场的温度超过80–100°C。但是，引起温度升高的过程尚不清楚。这项研究的目的是建立一个模型，以描述垃圾填埋场的热量产生，消耗和释放，预测垃圾填埋场的温度，并了解导致热量产生和积累的因素的相对重要性。模拟的热源包括来自好氧和厌氧生物降解，厌氧金属腐蚀，灰分水合和碳化以及酸碱中和的能量。排热过程包括垃圾填埋气的对流，渗透，渗滤液收集和蒸发。该垃圾填埋场被视为完全混合的间歇式反应器。模型预测表明，厌氧金属腐蚀和灰分水合/碳酸化对垃圾填埋场的影响均高于仅由生物反应估算的温度。凭经验对垃圾的放热热解进行了建模，该热被认为是由于局部热量的积累而引发的，以说明其对生热的潜在影响。

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  • 来源
    《Environmental Science & Technology》 |2017年第21期|12434-12442|共9页
  • 作者

    Zisu Hao; Mei Sun; Joel J. Ducoste; Craig H. Benson; Scott Luettich; Marco J. Castaldi; Morton A. Barlaz;

  • 作者单位

    Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States;

    Department of Civil-and Environmental Engineering, University of North Carolina at Charlotte, Charlotte, North Carolina 27223, United States;

    Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States;

    School of Engineering and Applied Science, University of Virginia, Charlottesville, Virginia 22904, United States;

    Geosyntec Consultants, 125 Community Dr., Augusta, Maine 04330, United States;

    Chemical Engineering Department, The City College of New York, City University of New York, New York, New York 10031, United States;

    Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States;

  • 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);
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  • 正文语种 eng
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