Department of Civil and Environmental Engineering, Carleton University, Ottawa, ON, Canada.
Waste Manag Res. 2013 Jul;31(7):692-9. doi: 10.1177/0734242X13485794. Epub 2013 Apr 29.
A bioreactor landfill operated in Sainte-Sophie, Québec, Canada was instrumented to better understand the waste stabilization process in northern climates. Instrument bundles were placed within the waste to monitor temperature, oxygen, moisture content, settlement, total load, mounding of leachate and electrical conductivity. A finite element model was developed to simulate the heat fluxes to and from the waste, as well as heat generation within the waste from both anaerobic and aerobic processes. The results of the analysis suggest the majority of the aerobic activity occurs in the top portion of the waste lift exposed to ambient air. In addition, the model indicates that frozen waste lifts require a significant amount of heat to thaw the liquid fraction. The model also demonstrates that when a lift of cold waste is placed at the bottom of the landfill, the subsurface acts as a significant source of heat.
加拿大魁北克省圣索非亚的一个生物反应器垃圾填埋场配备了仪器，以更好地了解北方气候下的废物稳定化过程。仪器包被放置在废物中，以监测温度、氧气、含水量、沉降、总负荷、渗滤液的堆积和电导率。开发了一个有限元模型来模拟废物的热通量以及废物内部的厌氧和需氧过程产生的热量。分析结果表明，大部分好氧活动发生在暴露于大气中的废物提升部分的顶部。此外，该模型表明，冻结的废物提升需要大量的热量来融化液体部分。该模型还表明，当一堆冷废物被放置在垃圾填埋场的底部时，地下部分充当了一个重要的热源。
