Patent ID: 7722776

Claim:
A gravitational separation device for purifying water by removing suspended particles from a liquid phase, the system comprising: a basin for treating water having a curved wall including an inner portion and an outer portion; a supply channel having a constant width for supplying water to the basin disposed along a periphery of the inner portion of the wall; a plurality of openings provided in a floor of the supply channel; a skirt spaced from the inner portion of the wall adjacent to the floor, wherein the skirt is inclined inwardly toward the interior of the basin at an angle α of between approximately 5° and approximately 80°; a plurality of deflector plates disposed under the openings and between the inner portion of the wall and the skirt; a discharge channel having generally constant width for discharging the liquid phase out of the basin disposed adjacent to the supply channel; and a device for discharging suspended particles.