超大城市不同功能区沉积物中微塑料的分布、迁移和潜在风险：从雨水污水网络到城市河流

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2024-11-22 DOI:10.1016/j.jwpe.2024.106623

Yan Wu , Cui Zhou , Xingjian Long , Luyue Zhang , Jinhui Chen , Xingyu Gao , Jing Zhang , Qingguo Wang

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引用次数: 0

摘要

为了研究特大城市雨水管网不同功能区沉积物中微塑料（MPs）的分布和潜在风险，研究了成都市雨水管网五个功能区雨水窨井沉积物中微塑料的丰度和特征，并探讨了土地利用和环境因素的影响。结果表明，微塑料丰度变化范围为2641.5-10566个/千克干重，大小变化趋势为主要管区> 居住区> 绿化区> 商业区> 教育区。沉积物中 MPs 的形状依次为碎片（37.32 %）、薄膜（27.46 %）、纤维（22.12 %）和颗粒（13.1 %）。MPs 色彩丰富，大部分为彩色，占 88.36 %。粒径主要集中在 50-200 μm，占 67.06%。雨水汇集区、道路交通性能指数和人口众多的地方显示出较高的 MP 含量。建筑物使用时间越长，表现出的 MP 数量越少。PHI 和 RI 分析结果显示，主要管道和商业区的潜在生态风险高于其他功能区。这表明 MPs 的类型比数量对潜在风险的影响更大。雨水渠网沉积物中 MPs 的特征与其受纳水体底土中 MPs 的特征高度相似，这表明雨水渠网是城市河流中 MPs 的重要来源。

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Microplastics distribution, transport and potential risks in sediments across different functional areas of megacities: From storm sewer networks to urban river

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Microplastics distribution, transport and potential risks in sediments across different functional areas of megacities: From storm sewer networks to urban river

Order to investigate the distribution and potential risks of microplastics (MPs) in sediments from different functional areas of megacity storm sewer networks, the abundance and characteristics of MPs in sediments from storm sewer manholes in five functional areas of Chengdu's storm sewer network were investigated, and the impacts of land use and environmental factors were also explored. The results showed that microplastic abundance varied in the range of 2641.5–10,566 items/kg dry weight, and the size trend showed that the main pipe area > residential area > green area > commercial area > educational area. The shapes of MPs in the sediments are, in order, fragments (37.32 %), films (27.46 %), fibers (22.12 %), and particles (13.1 %). MPs are rich in color, mostly colored, accounting for 88.36 %. The particle size is mainly concentrated in 50–200 μm, accounting for 67.06 %. Stormwater catchment areas, traffic performance index for roads, and places with large populations exhibit higher amounts of MPs. The longer the building has been in use, the lower the number of MPs exhibited. The results of the PHI and RI analyses showed that the potential ecological risk is higher in the main pipe and commercial areas than in the other functional areas. This suggests the type of MPs contributes more to the potential risk than the abundance. The characteristics of MPs in storm sewer network sediments are highly similar to those in the subsoil of their receiving waters, suggesting that the storm sewer network is an important source of MPs in urban rivers.

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies