一个基于灰色水足迹的包容性解决方案,用于对工业废水处理系统的性能评估
Keivan Arastou1, Ali Dehnavi1, Shervin Jamshidi2
1Department of Civil Engineering, University of Isfahan, Isfahan, Iran.
Scientific reports
|July 2, 2025
概括
本研究引入了灰色水足迹 (GWF) 框架,用于评估工业废水处理厂 (WWTP). 该新方法应用于活性污泥和膜生物反应器系统,显示活性污泥在减少污染和运行可靠性方面具有优越的性能.
科学领域:
- 环境科学 环境科学
- 水资源管理 水资源管理
- 工业生态学 工业生态学
背景情况:
- 传统工业废水处理厂 (WWTP) 的效率是通过单个污染物度降低来评估的.
- 这种方法对于具有多种危险污染物和可变负载的复杂工业废水是不够的.
- 需要一个全面的评估框架来有效地比较WWTP.
研究的目的:
- 开发和验证使用灰色水足迹 (GWF) 进行包容性评估和对比工业WWTP的新型框架.
- 引入基于GWF的四个标准,用于评估WWTP绩效的多功能指数.
- 使用拟议的GWF框架,比较活性污泥 (AS) 和膜生物反应器 (MBR) 系统的性能.
主要方法:
- 基于灰色水足迹 (GWF) 的新框架被开发出来.
- 引入了四个源自GWF的指数:多污染物GWF减少,运营可靠性,每碳足迹的GWF (GWCF) 和重金属污染减少 (HPI).
- 作为案例研究,用于处理真正的工业废水的活性污泥 (AS) 和膜生物反应器 (MBR) 系统,在各种场景下分析了36种污染物.
主要成果:
- 与MBR (87.1%) 相比,AS系统的总体GWF去除率更高 (93.1%).
- 与MBR (77.5%) 相比,AS显示出更高的运行可靠性 (83.7%的GWF变化减少).
- AS的GWCF (347.8 m3/kg-CO2) 和HPI (56.7%) 比MBR (分别为84.9 m3/kg-CO2和50.4%) 好得多.
结论:
- 灰色水足迹 (GWF) 为评估和比较工业废水处理装置提供了一种多功能和整体的方法.
- 拟议的基于GWF的框架提供了比传统方法更全面的评估,考虑多种污染物,负载和区域标准.
- 在本研究中,活性污泥技术在所有评估的基于GWF的性能标准上都超过了膜生物反应器技术.
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