Microplastic accumulation in sewer sediments and its potential entering the environment via combined sewer overflows: a study case in Paris.

Autor: Nguyen MT; LEESU, Ecole Des Ponts ParisTech, Université Paris Est Créteil, Marne-La-Vallée, France. minh-trang.nguyen@enpc.fr., Phuong NN; Université Gustave Eiffel-Laboratoire Eau Environnement (LEE)-Allée Des Ponts Et Chaussées, 44344, Bouguenais, France., Saad M; LEESU, Ecole Des Ponts ParisTech, Université Paris Est Créteil, Marne-La-Vallée, France., Tassin B; LEESU, Ecole Des Ponts ParisTech, Université Paris Est Créteil, Marne-La-Vallée, France., Gillet T; Section de L'Assainissement de Paris, Subdivision Contrôle Des Eaux, 17 Rue Delesseux, 75019, Paris, France., Guérin-Rechdaoui S; Syndicat Interdépartemental Pour L'Assainissement de L'Agglomération Parisienne (SIAAP), Direction de L'innovation, 82 Avenue Kléber, 92700, Colombes, France., Azimi S; Syndicat Interdépartemental Pour L'Assainissement de L'Agglomération Parisienne (SIAAP), Direction de L'innovation, 82 Avenue Kléber, 92700, Colombes, France., Rocher V; Syndicat Interdépartemental Pour L'Assainissement de L'Agglomération Parisienne (SIAAP), Direction de L'innovation, 82 Avenue Kléber, 92700, Colombes, France., Gasperi J; Université Gustave Eiffel-Laboratoire Eau Environnement (LEE)-Allée Des Ponts Et Chaussées, 44344, Bouguenais, France., Dris R; LEESU, Ecole Des Ponts ParisTech, Université Paris Est Créteil, Marne-La-Vallée, France.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Feb; Vol. 31 (7), pp. 10501-10507. Date of Electronic Publication: 2024 Jan 10.
DOI: 10.1007/s11356-023-31734-8
Abstrakt: During wet weather events, combined sewer overflows (CSOs) transfer large amount of particulate matter and associated pollutants into surrounding water bodies, thereby deteriorating the recipients' ecological health. Resuspension of sewer sediments during these events contributes significantly to pollution level of these discharges. However, how much this in-sewer process contributes to CSOs' quality regarding microplastic (MP) pollution is little known. Therefore, an investigation on sewer deposits inside the Parisian combined sewer network was carried out. The study found high MP concentrations stored in this matrix, ranging from 5 × 10 3 to 178 × 10 3 particle/kg dry weight. Polymer composition is similar to what found in raw wastewater, containing a high proportion of polyethylene and polypropylene. Thus, the results indicated the persistence of MPs in sewer network during transport during dry weather periods to treatment facilities. Once resuspension of sewer deposits happens, MPs can be released into water flow and get discharged along with CSOs. This highlights another potential pathway of MPs into freshwater environment.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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