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在绿色墙壁中保留微塑料,用于基于自然和分散的灰色水处理

Lina Büngener¹, Ana Galvão², Heini Postila¹

¹Water, Energy and Environmental Engineering, Faculty of Technology, 90014, University of Oulu, Finland.

Environmental pollution (Barking, Essex : 1987)

|October 2, 2024

概括

活生生的绿色墙壁有效地处理灰色水,通过物理过去除大量的微塑料 (MP). 种植区块显示出比未种植区块更高的MP清除率,突出了它们在基于自然的废水解决方案中的潜力.

科学领域:

环境工程环境工程
水处理技术水处理技术
基于自然的解决方案

背景情况:

城市水资源压力的增加需要分散的处理和再利用策略.
像微塑料 (MP) 这样的新兴污染物在废水管理中构成了重大挑战.

研究的目的:

为了研究活生生的绿色墙壁在处理灰色水中的有效性.
在试点规模的研究中评估绿色墙壁的微塑料去除潜力.

主要方法:

一个试验规模的活生生的绿色墙被灰色水灌.
来自种植和未种植部分的废水被分析为化学氧气需求 (COD),总悬浮固体 (TSS) 和微塑料 (>50μm).
使用μRaman光谱和光显微镜识别了微塑料.

主要成果:

绿墙实现了大约80%的COD减少和90%的TSS去除.
观察到显著的微塑料去除,特别是在100-500微米大小范围的聚烯MP中.
与未种植部分 (20%) 相比,种植部分显示出更高的MP去除率 (50-60%).
通过生长媒介和植物根的物理过被确定为主要的去除机制.

结论:

活生生的绿色墙壁对于灰色水处理是有效的,提供了大量的COD,TSS和微塑料去除.
种植的绿色墙壁增强了微塑料的去除,表明它们作为分散废水处理和再利用的基于自然的解决方案的可行性.
为了准确量化微塑料,还需要对光成像进行进一步的细化.

关键词:

分散的废水处理和再利用.过的过方式绿色基础设施是绿色基础设施.基于自然的解决方案尼罗河红色光成像尼罗河红色光成像微拉曼光谱法微拉曼光谱法

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