Etude des relations mobilité-biodisponibilité-toxicité des micropolluants présents dans les déchets industriels? : application à la gestion des centres d'enfouissement technique de classe 1

Abstract : Research works carried out on the toxicity towards aquatic organisms of micropolluants found in industrial waste. The toxicity of the water-extractable fraction of 12 solid industrial wastes from various origins has been studied. In the same way, the study of the toxicity of landfill leachates and runoff waters around the site has been performed. Chemical analyses in accordance with the waste management regulations have been carried out simultaneously. The toxicity has been assessed with a battery of non redundant tests using several organisms representative of different trophic levels in aquatic ecosystems and allowing evaluation of acute toxicity (Photobacterium phosphoreum luminescence inhibition assay, Daphnia magna immobilization assay) and chronic toxicity (Raphidocelis subcapitata growth inhibition assay, Daphnia magna reproduction inhibition assay) including genotoxicity (salmonella typhimurium his mutagenicity test). The main conclusions of the study are as follow : leaching of some wastes may lead to a non negligeable removal of toxic substances. The solidification/stabilization processes can drastically reduce the toxic water extractable fraction: it is the case with the cement-stabilized refuse from the treatment of smokes from the incineration of domestic wastes, toxicity can be hardly predicted from the results of the chemical analyses ; it is all the more difficult since the concentrations of pollutants are low, toxic effects may be observed in the short and/or in the long term ; in all cases, chronic toxicity cannot be evaluated from results of acute toxicity tests. The whole results argue for the association of biogical criteria to the chemical criteria used in waste management, specially to check the efficiency of security barriers implemented on landfills
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Lucie Lambolez. Etude des relations mobilité-biodisponibilité-toxicité des micropolluants présents dans les déchets industriels? : application à la gestion des centres d'enfouissement technique de classe 1. Sciences agricoles. Université Paul Verlaine - Metz, 1994. Français. ⟨NNT : 1994METZ029S⟩. ⟨tel-01776109⟩

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