Origins and distribution of polyaromatic hydrocarbons and polychlorobiphenyls in urban effluents to wastewater treatment plants of the Paris area (France)

Publication TypeJournal Article
Year of Publication2001
AuthorsBlanchard, M, Teil, M-J, Ollivon, D, Garban, B, Chevreuil, M
JournalWater Research
Start Page3679
Date Published10/2001
Mots-cléspolyaromatic hydrocarbon, polychlorobiphenyl, sewage sludge, wastewater treatment plant
Polyaromatic hydrocarbons (PAHs) andpolychlorobiphenyls (PCBs), were investigated in urban effluents to wastewater treatment plants in the Paris area (France), under different meteorological conditions. The Achères plant was considered with special attention because of its particular features. Wastewater PAH concentration level was 6 fold higher than that of PCBs. In March, PCB concentrations did not vary whatever the meteorological conditions whereas, for PAHs, they were markedly higher during rainy episodes. In September, concentrations of both pollutants increased due to rainy weather. The rise was 30 fold stronger for PAHs. Daily fluxes displayed the same trends. This suggests that the contribution of atmospheric wet deposition to wastewater contamination prevails for PCBs. In contrast, PAHs appeared to originate mainly from urban runoff processes.