Department of Thematic Studies - Environmental Change, Linköping University, Sweden.
Department of Thematic Studies - Environmental Change, Linköping University, Sweden.
Waste Manag. 2018 May;75:319-326. doi: 10.1016/j.wasman.2018.01.031. Epub 2018 Feb 1.
Incomplete combustion processes lead to the formation of many gaseous byproducts that can be challenging to monitor in flue gas released via chimneys. This study presents ground-based remote sensing approaches to make greenhouse gas (GHG) flux measurements of methane (CH) and nitrous oxide (NO) from a waste incineration chimney at distances of 150-200 m. The study found emission of NO (corresponding to 30-40 t yr), which is a consequence of adding the reduction agent urea to decrease NO emissions due to NO regulation; a procedure that instead increases NO emissions (which is approximately 300 times more potent as a GHG than CO on a 100-year time scale). CH emissions of 7-11 t yr was also detected from the studied chimney despite the usage of a high incineration temperature. For this particular plant, local knowledge is high and emission estimates at corresponding levels have been reported previously. However, emissions of CH are often not included in GHG emission inventories for waste incineration. This study highlights the importance of monitoring combustion processes, and shows the possibility of surveying CH and NO emissions from waste incineration at distances of several hundred meters.
不完全燃烧过程会导致许多气态副产物的形成，而这些副产物在通过烟囱排放的烟道气中很难监测。本研究提出了基于地面的遥感方法，可在 150-200 米的距离内测量垃圾焚烧烟囱中甲烷 (CH) 和氧化亚氮 (NO) 的温室气体 (GHG) 通量。研究发现排放了 NO（对应 30-40 吨/年），这是由于添加还原剂尿素以减少由于 NO 法规而导致的 NO 排放的结果；这一过程反而增加了 NO 的排放（在 100 年的时间尺度上，作为一种温室气体，其效力大约是 CO 的 300 倍）。尽管使用了高温焚烧，但仍从研究中的烟囱检测到了 7-11 吨/年的 CH 排放。对于这个特定的工厂，当地的知识水平很高，以前也有报道过相应水平的排放估计值。然而，CH 的排放通常不包括在垃圾焚烧的温室气体排放清单中。本研究强调了监测燃烧过程的重要性，并展示了在数百米的距离内监测垃圾焚烧中 CH 和 NO 排放的可能性。
