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爱沙尼亚废水处理厂中的微塑料:基线度和分阶段清除效率的第一次评估

Ayankoya Yemi Ayankunle¹, Natalja Buhhalko², Karin Pachel³

¹Department of Environmental Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia; Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia.

Aquatic toxicology (Amsterdam, Netherlands)

|March 4, 2025

概括

爱沙尼亚的废水处理厂去除了99%以上的微塑料 (MP),但仍然每天释放数百万到波罗的海. 需要进一步的研究来解决这一重要的环境途径.

科学领域:

环境科学环境科学
水的质量水的质量
聚合物科学聚合物科学

背景情况:

废水处理厂 (WWTP) 被认为是微塑料 (MP) 释放到水生环境的重要途径.
在本研究之前,位于波罗的海沿岸的爱沙尼亚WWTPs的微塑料污染程度在很大程度上是未知的.

研究的目的:

为了在爱沙尼亚废水处理系统中确定基线微塑料水平.
评估精选的爱沙尼亚WWTPs的微塑料去除效率.
评估这些设施中微塑料的环境排放情况.

主要方法:

六个爱沙尼亚WWTP被选中进行研究.
采用三层系统的自动采样机收集了24小时的进水和废水的复合样本.
在Fenton-H2O2消化后,使用显微镜量化微塑料 (≥300μm),并通过μFTIR识别聚合物.

主要成果:

影响微塑料度在205到520 MPs/L之间,在机械处理过程中36-94%的去除.
总体而言,WWTP的清除效率很高 (99.6-99.8%),最终排放的排放量为0.5-1.4 MPs/L.
尽管清除率很高,但六个WWTP集体排放大约9.7 x 10^7MP/天到环境中.

结论:

爱沙尼亚的WWTP实现了高的微塑料去除效率,主要是通过机械处理.
每天仍有大量的微塑料被释放到波罗的海,这凸显了严重的环境问题.
这些发现为未来的监管行动和对来自废水源的微塑料污染的研究提供了关键数据.

关键词:

波罗的海波罗的海波罗的海微纤维是一种微纤维.微塑料的污染污染微塑料的污染微污染物微污染物市政废水城市的废水.

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