United Rentals, Inc.

E B (Bart) Ros

A tank assembly for the treatment of waste streams that include settling pollutants and floating pollutants. The tank assembly includes an inlet conduit, a first compartment that includes a first drain at a bottom thereof, a second compartment that includes a second drain at a bottom thereof, a third compartment that includes a third drain at a bottom thereof, and an outlet conduit. The second compartment also includes at least a first lamella filter package disposed therein. The third compartment also includes a skimmer, an underrun member and an overrun member. A liquid flow path is defined from the inlet conduit, through the first compartment, through the second compartment and the first lamella filter pack, through the third compartment, past the skimmer, under the underrun, over the overrun and out the outlet conduit.

Lamella filter tank assembly

A sludge dewatering tank that includes a first wall, a second wall, a third wall, a fourth wall and a bottom that cooperate to define a tank interior, a first interior wall and a second interior wall. The first interior wall cooperates with the first wall to define a first drainage compartment and includes at least a first filter member. The first drainage compartment includes at least a first drain that communicates the first drainage compartment with an exterior of the sludge dewatering tank. The second interior wall cooperates with the second wall to define a second drainage compartment and includes at least a second filter member. The second drainage compartment includes at least a second drain that communicates the second drainage compartment with the exterior of the sludge dewatering tank. The first interior wall cooperates with the second interior wall to define a sludge space therebetween.

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Deventer, Netherlands

E B (Bart) Ros