在雨水池中使用浮式处理岛进行大规模去除和沉积沉积的建模:一种计算方法
Manoel Lucas Machado Xavier1, Johannes Gerson Janzen2, Heidi Nepf3
1Federal University of Mato Grosso do Sul (UFMS), Campo Grande, MS, 79070-900, Brazil. mavier89@gmail.com.
Environmental science and pollution research international
|October 13, 2023
概括
浮式处理岛屿 (FTIs) 显著改善了雨水污染物清除和沉积物的沉积. 它们的配置和放置对效率产生了重大影响,一些设计实现了超过70%的大型颗粒去除.
科学领域:
- 环境工程环境工程
- 水资源管理 水资源管理
- 计算流体动力学的流体动力学.
背景情况:
- 浮动处理岛屿 (FTIs) 已被公认为用于雨水管理,提供洪水减弱和污染物去除.
- 现有的知识缺口存在于FTIs在污染物清除和沉积沉积方面的具体性能.
- 在FTI系统中使用CFD同时分析质量去除和沉积沉积的方法以前没有被探索过.
研究的目的:
- 调查各种浮动处理岛 (FTI) 配置在雨水管理中的性能.
- 使用CFD分析FTI系统中通过FTIs进行大规模去除和沉积物沉积之间的相互作用.
- 评估FTI放置和配置对整体处理效率的影响.
主要方法:
- 利用计算流体动力学 (CFD) 建模来模拟FTI系统中的水流和污染物运输.
- 分析了多个FTI配置,重点是通过根区和沉积物沉积的大量去除.
- 将FTI业绩与没有FTI的对照案例进行比较.
主要成果:
- FTIs显著影响流量模式,与控制相比,增强了总体质量去除.
- 较大的沉积物颗粒在FTI系统中显示出更高的去除率.
- FTI的配置和定位产生了重大影响,放置差异导致大质量去除的变化高达20%.
结论:
- FTIs增强了雨水污染物的去除,其配置比单独的沉积物沉积更有影响.
- 在FTI池中的短路指数与沉积相关,这表明FTIs可以表明处理效率.
- 优化的FTI设计可以实现大沉积物颗粒的70%以上的质量去除,即使在减少的池长度.
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