对于灰色水处理的露天绿墙的流量变化的弹性
E Costamagna1, A Rizzo2, S Fiore3
1Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy.
Journal of environmental management
|March 30, 2025
概括
绿色墙壁有效地处理家庭灰水 (GW) 重复使用,显示了对流速变化的弹性. 虽然过载导致了轻微的处理下降和工厂压力,但系统恢复了,这表明它适合城市水资源管理.
科学领域:
- 环境工程 环境工程
- 城市水资源管理
- 基于自然的解决方案
背景情况:
- 城市水资源管理面临着气候变化和人口增长带来的挑战,增加了对节水的需求.
- 国内灰色水 (GW) 是非饮用再利用的可行来源,通过以自然为基础的处理系统来增强.
- 绿色墙壁提供了GW处理和当地的再利用的双重好处,将生态原则纳入城市基础设施.
研究的目的:
- 评估模块化绿墙系统在7个月内对灰色水 (GW) 流量变化的弹性.
- 评估改变GW流速对处理效率和绿墙植被健康的影响.
- 为优化绿色墙壁设计和在城市GW管理中的应用提供数据.
主要方法:
- 使用合成GW测试了两种模块化绿墙配置:一种是恒定流量 (控制),另一种是可变流量 (负载不足,负载过重,维护).
- 通过分析流入水和废水中的14个物理化学参数来评估处理性能.
- 在整个7个月的实验期间,监测植物健康和视觉指标.
主要成果:
- 绿墙处理效率和植物健康仍然不受负载不足和维护流量的影响.
- 过载条件导致处理效率略有降低 (例如93.8%的BOD5去除) 和植物中暂时的视力困扰.
- 在超载期间观察到的所有负面影响在恢复到标准流量时是可逆的,这表明了系统的弹性.
结论:
- 模块化绿色墙壁对灰色水流入率的变化具有显著的弹性,使它们适合城市非饮用水的再利用.
- 该研究提供了关键的设计准则,建议最大的有机载荷率 (∼20 gBOD5 m−2 d−1) 和氧气转移率 (∼15 gO2 m−2 d−1).
- 绿色墙壁代表了一种强大的以自然为基础的解决方案,用于增强城市水资源的可持续性和资源管理.
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