[Advances in the Separation and Removal of Microplastics in Water Treatment Processes].

Q2 Environmental Science Huanjing Kexue/Environmental Science Pub Date : 2024-10-08 DOI:10.13227/j.hjkx.202309240
Yi-Ran Chai, Hui-Jie Xu, Ke-Xuan Gao, Yu Yang, Li-An Hou
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Abstract

In this review, we comprehensively analyzed the distribution of microplastics (MPs) in major water ecosystems in China and the fate of MPs during the water treatment process. The removal efficiency of MPs with different colors, sizes, shapes, and materials was also discussed. The results showed that the abundance of microplastics in the aquatic environment was geographically variable and closely related to human activities. Fibrous and transparent (white) microplastics were the most common features in China's water ecosystems and water treatment plants, with polypropylene (PP), polyethylene (PE), and polystyrene (PS) being the most common polymer types of microplastics. The removal efficiency of MPs varied from different treatment processes significantly. Pre-treatment and primary treatment in wastewater treatment plants (WWTPs) contributed the most to the removal. In the secondary treatment, the sedimentation tank showed more efficiency than the biological treatment processes. Tertiary treatment processes demonstrated remarkable effectiveness in achieving terminal control of MPs, especially membrane technologies. On the contrary, aeration and hydrodynamic effects may have increased the abundance of MPs in WWTPs. In drinking water treatment plants (DWTPs), coagulation-sedimentation processes were found to be the most effective in removing MPs, followed by filtration and disinfection processes. Further, both pre-treatment and post-treatment steps also made significant contributions to MPs removal.

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[水处理工艺中分离和去除微塑料的进展]。
在这篇综述中,我们全面分析了微塑料(MPs)在中国主要水生态系统中的分布以及在水处理过程中的归宿。在中国主要水生态系统中的分布情况,以及微塑料在水处理过程中的去向。此外,还讨论了不同颜色、大小、形状和材料的微塑料的去除效率。研究结果表明,微塑料在水环境中的丰度具有地域差异性,且与人类活动密切相关。纤维状和透明(白)聚丙烯(PP)、聚乙烯(PE)和聚苯乙烯(PS)是微塑料中最常见的聚合物类型。是微塑料中最常见的聚合物类型。不同处理工艺对微塑料的去除率差异很大。污水处理厂(WWTPs)的预处理和一级处理对微塑料的去除贡献最大。的去除率最高。在二级处理过程中,沉淀池的效率高于生物处理过程。三级处理工艺,尤其是膜技术,在实现对 MPs 的终端控制方面效果显著。相反,曝气和水动力效应可能会增加污水处理厂中 MPs 的含量。在饮用水处理厂(DWTPs)中,混凝沉淀工艺去除 MPs 的效果最好,其次是过滤和消毒工艺。此外,预处理和后处理步骤对去除 MPs 也有显著作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Huanjing Kexue/Environmental Science
Huanjing Kexue/Environmental Science Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
期刊最新文献
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