title: A posteriori assessment of ecotoxicological risks linked to building a hospital.
abstract: Hospital wastewater (HWW) contain a large number of chemical pollutants such as disinfectants, surfactants, and pharmaceutical residues. A part of these pollutants is not eliminated by traditional urban wastewater treatment plants (WWTP), leading to a risk for the aquatic ecosystems receiving these effluents. In order to assess this risk, we formulated a specific methodology based on the ecotoxicological characterisation of the hospital wastewater using a battery of three chronic bioassays (Pseudokirchneriella subcapitata, Heterocypris incongruens and Brachionus calyciflorus). We used it for the posteriori risk assessment of a hospital recently built in south-east France, and we studied the evolution of this risk during two years. We also used it to assess the decrease of the ecotoxicological risk after treatment of the effluent in a specific line of the local WWTP. Lastly, we compared these results with the risk assessment made before the building of the hospital in the context of a priori risk assessment. The results obtained showed an important evolution of the risk overtime, according to the hospital activities and the river flows, and a real decrease of the risk after treatment in the dedicated line. They also showed that the a priori assessment of ecotoxicological risks, made previously, was overstated, mainly because of the application of the precautionary principle.
authors.affiliation: Université de Lyon, ENTPE, CNRS, UMR 5023 LEHNA, 2 Rue Maurice Audin, 69518 Vaulx-en-Velin, France. Electronic address: Yves.Perrodin@entpe.fr.
authors.forename: Yves
authors.initials: Y
authors.lastname: Perrodin
authors.affiliation: INSAVALOR-POLDEN, 20 Avenue Albert Einstein, 69621 Villeurbanne, France.
authors.forename: Christine
authors.initials: C
authors.lastname: Bazin
authors.affiliation: Université de Lyon, ENTPE, CNRS, UMR 5023 LEHNA, 2 Rue Maurice Audin, 69518 Vaulx-en-Velin, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Orias
authors.affiliation: Université de Lyon, ENTPE, CNRS, UMR 5023 LEHNA, 2 Rue Maurice Audin, 69518 Vaulx-en-Velin, France.
authors.forename: Adriana
authors.initials: A
authors.lastname: Wigh
authors.affiliation: Université de Lyon, ENTPE, CNRS, UMR 5023 LEHNA, 2 Rue Maurice Audin, 69518 Vaulx-en-Velin, France.
authors.forename: Thérèse
authors.initials: T
authors.lastname: Bastide
authors.affiliation: Université de Lyon, UMR5280-CNRS, Université Lyon 1, ENS-Lyon, 5 rue de la Doua, 69100 Villeurbanne, France.
authors.forename: Alexandra
authors.initials: A
authors.lastname: Berlioz-Barbier
authors.affiliation: Université de Lyon, UMR5280-CNRS, Université Lyon 1, ENS-Lyon, 5 rue de la Doua, 69100 Villeurbanne, France.
authors.forename: Emmanuelle
authors.initials: E
authors.lastname: Vulliet
authors.affiliation: Université de Lyon, UMR5280-CNRS, Université Lyon 1, ENS-Lyon, 5 rue de la Doua, 69100 Villeurbanne, France.
authors.forename: Laure
authors.initials: L
authors.lastname: Wiest
mesh_terms: D001681:Biological Assay; D000460:Chlorophyta / Q000187:drug effects; D017753:Ecosystem; D054750:Ecotoxicology; D005602:France; D015386:Hazardous Substances / Q000032:analysis* / Q000633:toxicity; D006761:Hospitals; D008284:Maintenance and Engineering, Hospital; D018570:Risk Assessment; D045483:Rivers / Q000737:chemistry; D012722:Sewage / Q000737:chemistry; D062065:Wastewater / Q000032:analysis* / Q000633:toxicity; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000633:toxicity
chemical_list: D015386:Hazardous Substances; D012722:Sewage; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Chemical pollutants; Ecotoxicological risk assessment; Hospital wastewater; Pharmaceuticals; WWTP