地下水对尼泊尔非下水道卫生系统的甲排放的影响
Prativa Poudel1, Prayon Joshi2, Sarana Tuladhar3
1Department of Environment Science and Engineering, Kathmandu University, Nepal; Aquatic Ecology Centre, School of Science, Kathmandu University, Nepal.
Environmental pollution (Barking, Essex : 1987)
|May 29, 2024
概括
非下水道卫生系统 (NSSS) 释放大量的温室气体 (GHG),特别是甲 (CH4),原因是像坑所这样的无系统中的水分. 解决这些排放对于尼泊尔实现其气候目标至关重要.
科学领域:
- 环境科学 环境科学
- 气候变化研究 气候变化研究
- 卫生工程 卫生工程
背景情况:
- 非下水道卫生系统 (NSSS) 是温室气体 (GHG) 排放的主要来源.
- 没有密封或没有层的隔离系统,如坑洞所,特别容易受到影响排放的湿度的影响.
- 无线系统的地下水淹没加剧了温室气体的产生.
研究的目的:
- 为了量化尼泊尔无线NSSS的温室气体排放量.
- 为了比较无线NSSS的排放与密封系统 (如污水池) 的排放.
- 为了确定尼泊尔的生态和省级划分中温室气体排放的区域差异.
主要方法:
- 使用政府间气候变化专门委员会 (IPCC) 模型进行排放量化.
- 使用的地理信息系统 (GIS) 工具用于空间表示排放数据.
- 用可用的国家统计数据验证模拟的地下水数据.
主要成果:
- 来自尼泊尔NSSS的甲 (CH4) 总排放量量为每年2618千克二氧化碳当量.
- 这一排放水平几乎是2011年尼泊尔废物部门报告的排放量的两倍.
- 低地 (特拉伊地区) 的CH4排放量最高 (1329.37 Gg CO2e/年),原因是浅层地下水淹没了无的所.
结论:
- 尼泊尔NSSS的温室气体排放量很大,并对气候产生重大影响.
- 准NSSS排放对于实现尼泊尔在废物领域的国家自主贡献 (NDCs) 的目标至关重要.
- 了解地下水淹没在无线系统中的作用是减轻甲排放的关键.
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