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混合土地利用对不同类型降雨事件下的城市雨水质量的影响
Haibin Yan1, David Z Zhu2, Mark R Loewen1
1Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
The Science of the total environment
|August 1, 2024
概括
混合土地使用和降雨类型显著影响城市雨水质量,影响污染物水平和负载. 了解这些相互作用是管理排放污染的关键.
科学领域:
- 环境科学 环境科学
- 城市水文学 城市水文学
- 水质管理水质管理
背景情况:
- 城市排水是污染水的主要来源.
- 众所周知,混合土地用途和降雨特征会影响雨水质量.
研究的目的:
- 调查混合土地使用和降雨事件类型对城市雨水质量的综合影响.
- 为了评估城市排水中的总悬浮沉积物 (TSS),和.
主要方法:
- 在四个城市水域开展为期两年的现场监测计划.
- 事件平均度 (EMC) 和事件污染物负载 (EPL) 的分析.
- 相关性分析和多重线性回归 (MLR) 模型.
主要成果:
- 大多数和污染物存在于颗粒形式.
- 污染物负载 (EPL) 与降雨的相关性比污染物度 (EMC) 更强.
- 短暂而强烈的降雨和长期干旱的事件增加了污染物度.
结论:
- 混合土地使用复杂性和降雨特征显著影响城市雨水污染物产生和运输.
- 雨水质量因土地使用,降雨类型和季节而异.
- MLR模型可以预测雨水质量,通过考虑土地使用的复杂性来提高准确性.
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