B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 33/01 (2006.01) B01D 29/05 (2006.01) B30B 9/06 (2006.01) C02F 11/12 (2006.01)
Patent
CA 2211817
The sludge filtration system includes a filter (1) installed on an essentially horizontal box (4). The filter (1), in its filtering position, represents the bottom of an essentially vertical filter chamber (8). The filtration system also includes a piston (10) designed to close the upper portion of the filter chamber. With the relative displacement of the controls (3, 11) between the box (4) equipped with the filter (1) and the piston (10), a liquid filtrate drips through the filter (1) leaving a cake of solid matter on the filter (1) at the end of the operation. The filter cake is then removed by a scraping device (31). The piston takes the form of a piston-filter (10), so that a liquid effluent passes through the piston-filter (10) when the volume of the filter chamber (8) decreases. A suction pumping device (P) is designed to remove the effluent above the piston-filter (10).
Le dispositif de filtration de boues, comprend: un filtre (1) disposé sur un caisson (4) sensiblement horizontal, ce filtre (1) constituant, dans sa position de filtration, le fond d'une chambre de filtration (8) d'axe essentiellement vertical ; un piston (10) propre à fermer la chambre de filtration en partie haute; des moyens de commande (3,11) d'un déplacement relatif entre le caisson (4) muni du filtre (1) et le piston (10) de sorte qu'un filtrat liquide s'écoule vers le bas à travers le filtre (1) et qu'un gâteau de matières solides demeure sur le filtre (1) en fin d'opération; et un dispositif racleur (31) prévu pour évacuer ce gâteau. Le piston est réalisé sous forme d'un piston-filtre (10) de sorte qu'un effluent liquide passe à travers le piston-filtre (10) lors de la diminution du volume de la chambre de filtration (8), et un moyen de pompage par aspiration (P) est prévu pour évacuer l'effluent au-dessus du piston-filtre (10).
Neveu Bernard
Norais Marcel
Elf Atochem S.a.
Robic
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