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减少城市河口的污染负荷,使用可持续的排水系统处理列车

Thandi Mmachaka¹, Marelé A Nel², Bernadette Snow³

¹Department of Botany, Nelson Mandela University, Gqeberha 6031, South Africa; DSI/NRF Research Chair in Shallow Water Ecosystem, Institute of Coastal and Marine Research, Nelson Mandela University, Gqeberha 6031, South Africa.

Marine pollution bulletin

|August 13, 2023

概括

这项研究表明,一种新的可持续排水系统 (SuDS) 有效地减少了南非斯瓦特科普斯河口的污染. SuDS处理列车显著降低了微量金属,营养素和大肠杆菌,改善了河口生态系统的健康.

科学领域:

环境科学环境科学
水质管理水质管理
河口生态学河口生态学

背景情况:

城市河口面临着由于快速城市化和工业化的生态系统退化.
南非的斯瓦特科普斯河口遭受了历史性的污染,特别是工业和废水来源的微金属污染.
可持续排水系统 (SuDS) 在管理城市雨水和废水质量方面得到全球认可.

研究的目的:

评估一个新的SuDS处理列车在减轻斯瓦特科普斯河口污染的有效性.
量化物理特征,宏观营养素,微量金属和大肠杆菌度在处理后的减少.
评估SuDS对改善一个高度城市化的河口生态系统健康的贡献.

主要方法:

实施了五个阶段的SuDS处理列车 (沉积,沙/石过,生物降解,浮动湿地).
一年来,每月进行水质监测,评估悬浮固体,宏观营养素,微量金属 (As,Cd,Hg,Fe,Pb,Cu) 和大肠杆菌的总量.
在SuDS处理列车的上游和下游测量度.

主要成果:

SuDS处理列车在关键污染物中实现了显著的减少.
宏观营养素度下降了76%,微量元素度下降了74%,大肠杆菌数量下降了80%.
该系统在改善河口系统的整体水质方面表现出高效率.

结论:

新型的SuDS处理列车是减少进入城市河口的污染负载的有效策略.
实施这些系统可以大大有助于生态恢复和退化的河口环境的健康.
城市排水系统为管理城市排水和保护敏感的水生生态系统提供了可行的解决方案.

关键词:

便中的细菌是什么?金属金属金属污染污染污染可持续的排水系统 (SuDS)斯瓦特科普斯河口的河口

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