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Modeling Thermal and Biological Behavior of Bioreactor Landfills in Stationary Conditions before Leachate Injection

机译:渗滤液注入前稳态条件下生物反应器垃圾填埋场的热学和生物学行为建模

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A two-phase flow model and a biological model where developed based on Darcy's law and Monod's model, respectively. The present model makes it possible to study the thermo-hydraulic behavior of an anaerobic bioreactor landfill in methanogenic phase. The biological model is based on bacterial activities and heat and gas production through solid degradation and production of liquid substrate. This coupled model (model-2) is compared with a classical model of degradation based on first order kinetics (model-1). This paper presents first the two-phase flow and simplified Monod's model of heat and gas generation. It then presents the numerical method to solve the conservation equations. This mathematical model is applied to a real bioreactor landfill in France. This paper presents the thermal results of numerical simulations comparing them with results of the classical model. Finally it will discuss the results, the advantages and inconveniences of this model.
机译:基于达西定律和莫诺德模型分别开发了两相流模型和生物模型。本模型使研究产甲烷期厌氧生物反应器垃圾填埋场的热工水力行为成为可能。生物学模型基于细菌活动以及通过固体降解和液体底物产生的热量和气体产生。将该耦合模型(模型2)与基于一阶动力学的经典降解模型(模型1)进行比较。本文首先介绍了两相流和简化的Monod生热气体生成模型。然后提出了求解守恒方程的数值方法。该数学模型已应用于法国的实际生物反应堆填埋场。本文介绍了数值模拟的热结果,并将其与经典模型的结果进行了比较。最后将讨论该模型的结果,优点和不便之处。

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