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Occurrence and fate of microplastics at two different drinking water treatment plants within a river catchment
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SYSNO ASEP 0524950 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Occurrence and fate of microplastics at two different drinking water treatment plants within a river catchment Author(s) Pivokonský, Martin (UH-J) SAI, ORCID, RID
Pivokonská, Lenka (UH-J) SAI, ORCID, RID
Novotná, Kateřina (UH-J) SAI, ORCID, RID
Čermáková, Lenka (UH-J) RID, ORCID, SAI
Klimtová, M. (CZ)Article number 140236 Source Title Science of the Total Environment. - : Elsevier - ISSN 0048-9697
Roč. 741, November (2020)Number of pages 11 s. Publication form Online - E Language eng - English Country NL - Netherlands Keywords coagulation-flocculation ; deep-bed filtration ; granular activated carbon ; microplastics ; sedimentation ; water treatment Subject RIV DJ - Water Pollution ; Quality OECD category Environmental sciences (social aspects to be 5.7) Method of publishing Limited access Institutional support UH-J - RVO:67985874 UT WOS 000568813100015 EID SCOPUS 85086895917 DOI 10.1016/j.scitotenv.2020.140236 Annotation Microplastics (MPs) are emerging globally distributed pollutants of aquatic environments, and little is known about their fate at drinking water treatment plants (DWTPs), which provide a barrier preventing MPs from entering water for human consumption. This study investigated MPs ≥ 1 μm in raw and treated water of two DWTPs that both lie on the same river, but the local quality ofwater and the treatment technology applied differ. In the case of the more complex DWTP, MPs were analysed at 4 additional sampling sites along the treatment chain. The content of MPs varied greatly between the DWTPs. There were 23 ± 2 and 14 ± 1 MPs L−1 in raw and treated water, respectively, at one DWTP, and 1296 ± 35 and 151 ± 4 MPs L−1 at the other. Nevertheless, MPs comprised only a minor proportion (b0.02%) of all detected particles at both DWTPs. With regard to size and shape of MPs, the majority (N70%) were smaller than 10 μm, and only fragments and fibres were found, while fragments clearly prevailed. The most frequently occurring materials were cellulose acetate, polyethylene terephthalate, polyvinyl chloride, polyethylene, and polypropylene. Much higher total removal of MPs was achieved at the DWTP with a higher initial MP load and more complicated treatment (removal of 88% versus 40%), coagulation-flocculation-sedimentation, deep-bed filtration through clay-based material, and granular activated carbon filtration contributed to MP elimination by 62%, 20%, and 6%, respectively. Additionally, results from this more complex DWTP enabled to observe relationships between the removal efficiency and size and shape of MPs, particularly in the case of the filtration steps. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2021 Electronic address https://www.sciencedirect.com/science/article/pii/S0048969720337578
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