Patent ID: 6919033

Claim:
A stormwater treatment system for eliminating solid debris and pollutants from drainage discharge comprising, in combination: (a) a cylindrical vessel having a closed base adapted to be buried underground; (b) an inner cylindrical wall, contained within the cylindrical vessel, and protruding upward from the vessel's closed base forming an outer annular chamber and an inner cylindrical chamber; (c) an inlet pipe extending through the wall of the cylindrical vessel for directing stormwater from the ground surface into the outer chamber and discharging the stormwater at a predetermined angle to an axis of the inlet pipe; (d) a vertical pipe, contained within the inner cylindrical chamber and cylindrical vessel, said vertical pipe being open at opposed ends; (e) an outlet pipe extending through the wall of the cylindrical vessel at a position diametrically opposed to the inlet pipe and further extending through the inner cylindrical wall to form a Tee with the vertical pipe; and (f) at least one weir opening formed through the inner cylindrical wall at a predetermined height above the closed base.