US Patent 7971731 Density baffle for clarifier tank

A baffle system in a clarifier tank having a tank bottom, a periphery, a substantially vertical peripheral wall bounding the interior of the tank and an effluent channel includes a plurality of baffles mounted on the clarifier tank. Each baffle has a baffle surface with a lower end and an upper end. The upper end is coupled to a wall of the clarifier tank and the lower end is disposed at a substantially 60° angle away from the side wall of the clarifier tank such that the baffle surface slopes downwardly and away from the side wall.