预测污水处理厂在使用附近地表水排放的混合,单独和联合下水道中流入,以更好地设计基于废水的流行病学采样
Arlex Marin-Ramirez1, Tyler Mahoney1, Ted Smith2
1Department of Civil and Environmental Engineering, J. B. Speed School of Engineering, University of Louisville, 132 E. Pkwy., Louisville, KY 40202, United States.
The Science of the total environment
|September 29, 2023
概括
新的废水采样指南使用环境流量数据来预测高流量事件期间的稀释. 这有助于公共卫生研究更早地做出关于废水流行病学样本收集和分析的决定.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 废水工程 废水工程
背景情况:
- 目前用于公共卫生的废水采样指南往往忽略了环境流量数据,错过了在高水文活动期间考虑地下水稀释和下水的机会.
- 早期识别稀释事件对于准确的基于废水的流行病学研究至关重要.
研究的目的:
- 为高水文活动事件制定数据驱动的废水采样规则.
- 为了能够在采集前提前就样本稀释做出决定.
- 提高基于废水的公共卫生监测的可靠性.
主要方法:
- 利用随机森林和线性回归模型来定义采样规则.
- 集成的环境数据包括废水处理厂的流入率,附近的河流排放量和降水量.
- 应用模型在肯塔基州杰斐逊县的五个处理厂,跨越各种下水道类型和人口规模.
主要成果:
- 确定了溪流排放和处理厂流量之间的强烈非线性关系,表明稀释.
- 拟议的流量条件截止值 (10%,25%,50%),用于公共卫生样本定向.
- 确定前一天的影响率和USGS流量数据是透和流入混合的关键预测指标.
结论:
- 地表水排放数据为潮湿天气稀释提供了早期警告,改善了基于废水的流行病学研究工作流程.
- 考虑透和流入比例,而不仅仅是总流量,对于规范化废水数据至关重要.
- 拟议的方法提供了一种快速,低成本的方法来评估废水的流量状况.
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