Patent ID: 6371308
Filing Date: 2002-04-16
Classification: B01D

Abstract:
A sludge clarifying device, comprisinga clarifier tank having a center influent column to input a sludge-containing fluid, a side wall and a tank floor to contain the sludge-containing fluid; a plurality of stationary sludge collection tubes disposed on the tank floor beneath the sludge-containing fluid and concentrically arranged with respect to a central point in the clarifier tank, the plurality of stationary sludge collection tubes being located at different radial distances from the central point and having a plurality of orifices for receiving an input of sludge from the sludge-containing fluid; a plurality of stationary sludge transfer tubes in fluid connection with at least one of the plurality of stationary sludge collection tubes, the first and second stationary sludge transfer tubes having an upstream portion that receives an input flow of sludge from the plurality of stationary sludge collection tubes and a downstream portion that outputs the flow of sludge; a connection ring centrally located beneath the tank floor and in fluid connection with the downstream portion of the plurality of stationary sludge transfer tubes to collect the output flow of sludge therefrom, the plurality of stationary sludge transfer tubes being disposed along a plurality of radii extending between the connection ring and the plurality of stationary sludge collection tubes; and a pump in fluid connection with the flow of sludge to urge the flow of sludge through the stationery sludge transfer tubes.