Method of treating organic contaminated materials

Details Method of treating organic contaminated materials Method of treating organic contaminated materials

B - Operations, Transporting

09

C

B09C 1/02 (2006.01) B01D 21/26 (2006.01) B03B 9/02 (2006.01) B09C 1/00 (2006.01) B09C 1/08 (2006.01) C10G 27/12 (2006.01) C10G 31/06 (2006.01) C10G 31/10 (2006.01) C10G 53/02 (2006.01)

Patent

CA 2286896

Friable solid material contaminated by oxidizable hydrocarbons such as petrochemicals is delivered into a system wherein the material is subjected to a series of physical and chemical reactions to separate the contaminants from the solid material. The system can receive solid material, separate coarse from fine material, and suspend the fine material in an aqueous medium. The aqueous suspension is subjected to temperature adjustment and the addition of an oxidizing agent, preferably hydrogen peroxide. The suspension is agitated for a period of time to allow the hydrocarbons to be oxidized. The gaseous oxidation products are stripped and separated from the residual solid material. The aqueous suspension of solid material and diluent are physically separated and the solid material may be returned to its point of origin after treatment. The process and apparatus for carrying out the process are preferably applied to soils containing hydrocarbon pollutants.

On introduit, dans le cadre de ce procédé, des matières solides friables contaminées par des hydrocarbures oxydables tels que des produits pétrochimiques dans un système qui les soumet à une série de réactions physiques et chimiques visant à extraire les contaminants. Le système est capable de recevoir des matières solides, de séparer les matières à gros grains des matières à particules fines et de mettre ces dernières en suspension dans un milieu aqueux. On ajuste la température de la suspension aqueuse et on ajoute un agent oxydant, de préférence, du peroxyde d'hydrogène. On agite la suspension pendant un laps de temps suffisant pour permettre l'oxydation des hydrocarbures. Les produits gazeux d'oxydation sont désessenciés et séparés des matières solides résiduelles. Après avoir séparé le diluant et la suspension aqueuse contenant les matières solides, on peut renvoyer à leur point de départ les matières solides, une fois le traitement achevé. On applique ce procédé mis en oeuvre au moyen du dispositif afférent à des sols renfermant des polluants hydrocarbonés.

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