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Mise au point d'une nouvelle filière de traitement des eaux de lavage de fumées d'incinération

Abstract : The aim of this work was to define a treatment process of flue gas cleaning wastewater from household refuses or industrial wastes incineration. Different synthetic wastewaters were used to determine the optimal heavy metal removal conditions using sodium carbonate and silicate as the two reactive agents in a new synthetic material. The solid and liquid phases characterized by fine analytical methods allowed to precise the removal mechanisms of several pollutants. ln the solid phase, the soluble silicates reacted with diverse cations to form amorphous silicates however no silica were found. Microfiltration membrane was used as a solid/liquid separation technique. After treatment, the solid phase presented higher concentrations than traditional sedimentation techniques, communly used in this field. The filtrate physical-chemical characteristics complied with aIl quality standards for discharge in the environment. The sludges dewatering process lead to a pasty waste. Its pollutant potential and stability were estimated by using two leaching tests. The data showed that the different solid phases were involved in dissolution and precipitation mechanisms. This study has highlighted a new flue gas cleaning wastewater chain that is more efficient and easier of usage than the present industrial process
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https://hal.univ-lorraine.fr/tel-01776352
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Sylvie Fraval. Mise au point d'une nouvelle filière de traitement des eaux de lavage de fumées d'incinération. Autre. Institut National Polytechnique de Lorraine, 1996. Français. ⟨NNT : 1996INPL124N⟩. ⟨tel-01776352⟩

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