Occurrence and fate of microplastics at two different drinking water treatment plants within a river catchment
| Autor: | Martina Klimtová, Lenka Cermakova, Martin Pivokonský, Kateřina Novotná, Lenka Pivokonska |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
congenital
hereditary and neonatal diseases and abnormalities Microplastics Environmental Engineering 010504 meteorology & atmospheric sciences 010501 environmental sciences 01 natural sciences law.invention Water Purification chemistry.chemical_compound Rivers law Environmental Chemistry skin and connective tissue diseases Waste Management and Disposal Filtration 0105 earth and related environmental sciences Pollutant Aquatic ecosystem Drinking Water nutritional and metabolic diseases Sedimentation Pollution Cellulose acetate Polyvinyl chloride chemistry Environmental chemistry Water treatment Plastics Water Pollutants Chemical |
| Zdroj: | The Science of the total environment. 741 |
| ISSN: | 1879-1026 |
| Popis: | 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 of water 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 ( 70%) 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect