Patent ID: 8910395

Claim:
Sludge treatment installation, comprising: an elongated floor having a work surface for accommodating a mass of sludge spread out thereon, substantially parallel guide rails ( 102 ) arranged longitudinally on the floor, on either side of the work surface, a chain drive system ( 110 ) arranged along the guide rails, a movable carriage ( 100 ) arranged transversely above the work surface and comprising at least one toothed wheel meshing with the chain drive system and coupled to a first drive shaft for moving the movable carriage in longitudinal translation above the floor along the rails, the carriage carrying a rotary turning tool ( 200 ) positioned transversely, in contact with said mass of sludge, the turning tool ( 200 ) being driven in rotation by a second drive shaft independent of the first, wherein the turning tool ( 200 ) comprises pairs of semi-cylindrical paddles fixed substantially symmetrically by one of their edges, on either side of a shaft ( 210 ) driven by said second drive shaft ( 206 ), the two paddles ( 204 A; 204 B) of each pair ( 202 ) being asymmetrical, because of their different radii, with a difference of approximately at least 5%, fans ( 300 ) of vertical axis mounted on the front of the movable carriage ( 100 ), and a conveying duct ( 302 ) which starts from the outlet of the fans, and forms a deflector directly towards said paddles of the turning tool ( 200 ).