Journal
CHEMOSPHERE
Volume 276, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.130023
Keywords
Organic-micropollutants; PPCPs; Perfluoroalkyl substances pesticides; Sources water; Drinking water treatment
Categories
Funding
- Ministerio de Economia, Industria y Competitividad
- Agencia Estatal de Investigacion (AEI)
- European Regional Development Fund (ERDF) [CTQ2017-84373-R]
- Pla de Doctorats Industrials (DI) of the University and Research Secretary of the Economy and Knowledge Department of the Generalitat de Catalunya
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This study investigated the occurrence and removal of 60 organic micropollutants in a drinking water treatment plant, revealing that granular activated carbon and ozonation are the most efficient removal technologies. Additionally, some compounds were still not effectively removed in the finished drinking water.
This paper investigates the occurrence and removal of 60 organic micropollutants (OMPs) including pharmaceuticals, personal care products, pesticides and per- and polyfluoroalkyl substances in a drinking water treatment plant (DWTP) treating raw water from the Ebro River (NE Spain). The behaviour of the OMPs was evaluated in each treatment: pre-ozonation, flocculation-coagulation-decantation-sand filtration, post-ozonation and granular activated carbon filtration. Thirty-one of the sixty OMPs studied were detected in source water with individual median concentrations below 10 ng L-1 for all the compounds except for caffeine (64.1 ng L-1). The highest concentration peaks in the source water were found for caffeine (124.5 ng L-1), terbuthylazine (52.0 ng L-1), imidacloprid (30.2 ng L-1) and paracetamol (25.6 ng L-1). Of the 31 compounds detected in the source water, 17 were also detected in the finished drinking water. Of these 17 compounds, 10 were PFASs, which indicated that this group of compounds had not been effectively removed throughout the drinking water treatments. The overall removal efficiencies of OMPs in the DWTP ranged from -50.9% to 100%. The most efficient removal technologies were ozonation and granular activated carbon. (C) 2021 Elsevier Ltd. All rights reserved.
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