Department of Civil & Environmental Engineering, Carleton University, 1125 Colonel By Drive, Ottawa, ON, Canada K1S 5B6.
Waste Manag. 2013 May;33(5):1215-28. doi: 10.1016/j.wasman.2013.01.020. Epub 2013 Feb 23.
A landfill operated in Ste. 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, settlement, oxygen, moisture content, total load, mounding of leachate and electrical conductivity. A finite element model was developed to simulate the heat budget for the first waste lift placed in the winter months and was calibrated using the first 10.5 months of collected temperature data. The calibrated model was then used to complete a sensitivity analysis for the various parameters that impact the heat budget. The results of the analysis indicated that the heat required for phase change to thaw the liquid fraction within frozen waste had a significant impact on the heat budget causing sections of waste to remain frozen throughout the simulation period. This was supported by the data collected to date at Ste. Sophie and by other researchers indicating that frozen waste placed during the winter months can remain frozen for periods in access of 1.5 years.
加拿大魁北克省圣索非亚的一个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、沉降、氧气、含水量、总负荷、渗滤液堆积和电导率。开发了一个有限元模型来模拟冬季放置的第一批废物层的热量预算，并使用前 10.5 个月收集的温度数据进行校准。然后，使用校准后的模型对影响热量预算的各种参数进行了敏感性分析。分析结果表明，解冻冻结废物中液体部分所需的相变热量对热量预算有重大影响，导致废物的部分区域在整个模拟期间保持冻结状态。这得到了圣索非亚迄今收集的数据以及其他研究人员的支持，这些研究表明，冬季放置的冻结废物在超过 1.5 年的时间内可能保持冻结状态。
