调查地表水污染与现场污水处理系统之间的关系
Mallory A Jordan1, Ann S Ojeda1, Eleanore A Larson1
1Department of Geosciences, Auburn University, Auburn, Alabama 36849, United States.
Environmental science & technology
|October 25, 2023
概括
现场废水处理系统 (OWTS) 严重污染地表水. 改善对OWTS数据的访问对于有效的流域管理和非点源污染控制至关重要.
科学领域:
- 环境科学 环境科学
- 水质管理水质管理
- 地理信息系统 (GIS) 是指地理信息系统.
背景情况:
- 现场废水处理系统 (OWTS) 被认为是污染水的重要非点源 (NPS).
- 对OWTS数据的有限可用性阻碍了它们在流域管理和污染建模中得到准确的纳入.
- 了解OWTS的污染潜力对于保持地表水质量至关重要.
研究的目的:
- 通过基于GIS的多标准决策分析,在流域规模上建模OWTS的污染潜力.
- 调查OWTS污染指标与现场水质参数,特别是大肠杆菌 (E. coli) 之间的关系.
- 评估OWTS作为对地表水污染的贡献者的重要性.
主要方法:
- 获得OWTS许可证,并将其与环境数据集成为流域规模建模.
- 采用基于GIS的多标准决策分析来确定OWTS污染潜力.
- 在现场测量水质参数 (大肠杆菌,总,总,温度,pH) 并开发了一般的线性模型.
主要成果:
- 与使用分类的OWTS潜力或土地覆盖面的模型相比,包含OWTS污染潜力的模型显示出最佳匹配 (最低AICc = 35.01).
- 确定OWTS污染潜力是预测地表水中的大肠杆菌水平的一个重要因素.
- 发现地表水中的大肠杆菌水平受到OWTSs的影响.
结论:
- OWTS是表面水污染的重要贡献者.
- 改善对OWTS数据的访问,包括位置和年龄,对于准确的非点源污染评估至关重要.
- 未来的流域管理战略应优先考虑整合全面的OWTS数据.
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