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水生植物在单一栽培或混合种群中的多重污染物去除动态

Jonathan Fletcher¹, Nigel J Willby¹, David M Oliver¹

¹Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, UK.

Environmental research

|September 22, 2024

概括

浮式处理湿地 (FTW) 有效地去除多种污染物,包括总无机 (TIN) 和金属. 植物群体的组成和较长的居住时间增强了各种污染物的植物修复.

科学领域:

环境科学环境科学
生态生态学生态生态学
生物修复是一种生物修复.

背景情况:

使用浮式处理湿地 (FTW) 的植物修复通常集中在单一的污染物和植物物种上.
了解多种FTW工厂社区同时去除多种污染物对于有效的水质管理至关重要.

研究的目的:

量化FTW具有Typha latifolia,Glyceria maxima和Phragmites australis不同比例的潜力,可以同时去除11种营养物质/金属质污染物.
调查植物群体组成,根长度和保留时间对污染物去除效率的影响.

主要方法:

使用FTW种植的实验设置,种植了三种新兴单种植的不同组合.
在水和植物组织中分析了11种营养/金属质污染物.
植物特征 (根长,组织封存) 和污染物度之间的相关性分析.
评估社区组成和保留时间对移除率的影响.

主要成果:

总无机 (TIN),K和Mn的去除率最高. P,Zn和Cu的去除程度中等,而Mg,Ca,Na,Cr和Fe的去除程度较差.
根的长度与水中的减少的Ca,Mg,K,P和Zn相关. 植物吸收和组织封存是Mn,TIN,P和Fe去除的关键.
FTW社区的组成显著影响了Zn去除 (T. latifolia占主导地位),但对TIN,Mg,K和Na的影响较小. 除去污染物,如Cu,随着保留时间的延长而增加.

结论:

FTW 可以同时去除一系列污染物,其效率因污染物类型和植物社区而异.
优化FTW工厂的组成和最大限度地提高水的停留时间是提高植物修复效率的关键策略.
该研究强调了定制FTW设计在各种水环境中用于多污染物水处理的潜力.

关键词:

欧洲化是什么意思?浮式处理湿地浮式处理湿地淡水恢复淡水恢复基于自然的解决方案植物疗法:水质水质

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相关概念视频

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.