| 主权项 |
1. A sludge treatment plant, comprising
an extended floor with a work surface for receiving a mass of spread-out sludge, a movable carriage positioned transversely above the work surface and comprising a drive system for moving the carriage in longitudinal translation above the floor, said carriage comprising a displacement tool designed to continuously carry the sludge towards a terminal part of said work surface, a sludge withdrawal tool positioned at the terminal part of said work surface, to transfer the sludge to an outlet channel, characterized in that the outlet channel comprises a screw conveyor arranged in interaction with the withdrawal tool, said screw conveyor being provided with a heating means in particular of a type comprising heat transfer fluid circulation or of a type comprising at least one heating resistor, and being associated with a rotational drive system, and a controller jointly arranged to adjust heating in the screw conveyor to obtain a sludge temperature between 90° C. and 100° C., while adjusting the rotational drive of the screw conveyor to obtain a residence time of the sludge within this screw conveyor substantially to a predetermined value greater than 4 hours. |
