Process and installation for the treatment of effluents by...

C - Chemistry – Metallurgy – 02 – F

Patent

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C02F 1/72 (2006.01) C02F 1/02 (2006.01) C02F 11/18 (2006.01)

Patent

CA 2202906

The invention relates to a process of aqueous phase oxidation of effluents, consisting of subjecting said effluents to oxidation in the presence of at least one catalyst and of at least one oxidising agent, at a temperature of between approximately 20°C and approximately 350°C, under a total pressure of between approximately 1 and approximately 160 bars, in such manner as to mineralise part of the organic matter and total ammoniated nitrogen contained in said effluents, said oxidation being carried out inside a reactor in which a gaseous phase is set up above the liquid phase consisting of said effluents. characterized in that said catalyst is a heterogeneous catalyst placed inside said reactor above the interface between said gaseous phase and said liquid phase.

Procédé et installation de traitement d'effluents par oxydation et dénitrification en présence d'un catalyseur hétérogène. L'invention concerne un procédé d'oxydation en phase aqueuse d'effluents consistant à faire subir auxdits effluents une oxydation en présence d'au moins un catalyseur et d'au moins un agent oxydant, à une température comprise entre environ 20 DEG C et environ 350 DEG C, sous une pression totale comprise entre environ 1 et environ 160 bars, de façon à minéraliser une partie de la matière organique et de l'azote ammoniacal et total contenu dans lesdits effluents, ladite oxydation étant menée à l'intérieur d'un réacteur dans lequel une phase gazeuse est ménagée au-dessus de la phase liquide constituée par lesdits effluents, caractérisé en ce que ledit catalyseur est un catalyseur hétérogène disposé à l'intérieur dudit réacteur, au-dessus de l'interface entre ladite phase gazeuse et ladite phase liquide.

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