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Oxygen intrusion into waste in old landfills of low organic content

机译：氧气侵入有机物含量低的旧垃圾填埋场

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摘要

Oxygen invasion into old landfills was studied by assuming the installation of gas venting pipes to promote stabilization of waste. In an experiment using a column pack with old incombustible waste, oxygen intrusion was observed and the oxygen consumption rate was estimated. Oxygen diffused into the waste layer very quickly in the initial stage of the experiment, but oxygen concentration increased only gradually due to reduced gradient and decreasing oxygen consumption. The maximum oxygen consumption rate in packed waste was one-third of that in loosely deposited waste in a beaker measured in a respiration test. A mathematical model was created which fitted the experimental data well and a three-dimensional simulation of a full-scale landfill and a sensitivity analysis were performed.
机译：通过假设安装排气管以促进废物稳定，研究了氧气向旧垃圾填埋场的入侵。在使用装有旧的不可燃废物的柱包装的实验中，观察到氧气入侵并估算了氧气消耗率。在实验的最初阶段，氧气非常迅速地扩散到废物层中，但是由于梯度减小和氧气消耗减少，氧气浓度仅逐渐增加。在呼吸测试中，装满的废物中最大的耗氧率是烧杯中散落的废物中最大耗氧率的三分之一。建立了一个数学模型，该模型很好地拟合了实验数据，并进行了全尺寸垃圾填埋场的三维模拟和敏感性分析。

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