A method for drying sludge

Details A method for drying sludge A method for drying sludge

C - Chemistry, Metallurgy

02

F

C02F 11/12 (2006.01) B09B 3/00 (2006.01)

Patent

CA 2712822

A method for drying sludge comprising the following steps: (a) Dry dehydrated sludge to obtain a carrier for drying sludge (6); (b) Transport the carrier for drying sludge (6) and dehydrated sludge to be dried (1) to a stirring and mixing apparatus (2) for stirring and mixing and thereby obtain mixed sludge; (c) Transport the mixed sludge (3) to a drying apparatus (4) for drying; (d) Repeat steps (b) and (c); characterized in that in said step (d) a portion of the mixed sludge (3) obtained from the stirring and mixing apparatus (2) which is in an amount determined by amount of sludge carrier (6) required for drying is extracted and transported to the drying apparatus (4) for drying and the rest of the mixed sludge is discharged as final product (7).

Procédé de dessiccation de boues comportant les étapes suivantes : (a) sécher les boues déshydratées pour produire un support (6) destiné à dessécher les boues; (b) alimenter un appareil (2) de brassage et de mélange avec le support (6) et les boues déshydratées (1) à dessécher et les mélanger; (c) alimenter un appareil (4) de séchage avec les boues mélangées (3) obtenues à l'étape (b) et les dessécher; (d) répéter les étapes (b) et (c). Dans le procédé selon l'invention, la quantité de boues choisie issue des boues mélangées (3) provenant de l'appareil (2) de mélange à l'étape (d), destinées à être desséchées dans l'appareil (4) de séchage, repose sur la quantité de support (6) requise, et le reste des boues mélangées (7) est évacué en tant que produit fini.

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