结合流入和透评估方法,在数据稀缺环境中增强洞察力:应用于46个巴西系统
Gabrielle Marega1, Jennifer Drake2, David D J Meyer3
1Department of Civil and Mineral Engineering, University of Toronto, 35 St. George St., Toronto, ON M5S 1A4, Canada.
概括
在下水道中过度的流入和透 (I&I) 是一个主要的挑战. 一种新的混合方法结合了多种评估技术,提高了准确性和洞察力,特别是在数据稀缺的地区.
科学领域:
- 环境工程 环境工程
- 废水管理 废水管理
- 基础设施弹性 基础设施弹性
背景情况:
- 过度的流入和透 (I&I) 损害了卫生下水道的安全性和弹性.
- 低收入和中等收入国家的数据稀缺性限制了传统的I&I评估方法.
- 有效的I&I评估对于设计和运行弹性卫生下水道系统至关重要.
研究的目的:
- 通过结合多种方法,引入一种新的两阶段I&I评估方法.
- 提高I&I评估的准确性,特别是在数据稀疏的环境中.
- 展示适用于低收入和中等收入国家的混合方法.
主要方法:
- 开发了一种两阶段的方法:首先比较I&I方法以确定网络和数据问题,然后结合方法.
- 方法的组合与它们对估计错误的敏感性成反比例.
- 混合方法整合了水平衡和污染物质量流量 (生物氧需求) 的评估.
主要成果:
- 混合方法证明了微不足道的偏差 (<0.2%) 和改进的准确性,减少了超过10个百分点的平均百分比误差.
- 20多年来对46个巴西下水道网络的应用显示,I&I消耗了24%的总下水道容量.
- 在四个网络中,I&I超过了下水道容量的50%,突出显著的运营挑战.
结论:
- 拟议的混合方法有效地结合了多种I&I评估技术,以提高准确性并提供有价值的见解.
- 这种方法非常适合于数据稀疏的环境,为全球的I&I管理提供了可行的解决方案.
- 该研究展示了一个实用的框架,用于学习和整合各种I&I评估方法,以加强下水道网络管理.
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