来自下水道盖的甲排放:卡尔加里的废水收集系统的案例研究
Joseph Samuel1, Chris H Hugenholtz1
1Centre for Smart Emissions Sensing Technologies, Department of Geography, University of Calgary Calgary, AB, Canada.
Journal of the Air & Waste Management Association (1995)
|January 30, 2026
概括
下水道盖将甲 (CH4) 释放到大气中. 这项研究测量了卡尔加里118个下水道盖的CH4排放量,发现这些废水收集排放量是该市整体足迹的很小一部分.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 城市生态城市生态学
背景情况:
- 下水道盖作为废水系统中的生物甲 (CH4) 的排放点.
- 这些下水道排放对城市甲足迹的贡献量度不佳.
- 了解这些排放对于准确的温室气体库存至关重要.
研究的目的:
- 为了量化和描述来自加尔加里 (阿尔伯塔省) 下水道盖的甲 (CH4) 排放量.
- 评估废水收集CH4排放对城市总甲足迹的贡献.
- 确定影响下水道覆盖物CH4排放的因素.
主要方法:
- 在卡尔加里118个下水道覆盖处进行了直接甲 (CH4) 排放测量.
- 收集了关于每个测量下水道覆盖面的排放率 (g CH4 h−1) 的数据.
- 位于有利于CH4生产的地区的下水道盖的排放率与不有利于CH4生产的地区的排放率进行比较.
主要成果:
- 甲排放率有很大的差异,从0.00到0.241gCH4h-1.1之间.
- 估计每年累计的废水收集排放量为3.92公的CH4.
- 在产生CH4的环境中的下水道盖表现出更高的排放率.
结论:
- 废水收集CH4排放是卡尔加里的废水处理排放的小部分 (1.40%) 和城市总甲足迹的很小一部分 (0.005%).
- 甲排放与废水网络中的特定位置有关,有利于CH4生产.
- 虽然卡尔加里的排放量很低,但这一发现可能不适用于其他城市.
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