Patent ID: 6171498
Filing Date: 2001-01-09
Classification: B01D,C02F

Abstract:
A clarifier for treating a liquid containing dissolved or suspended solids, the clarifier comprising:a lower chamberan upper section;a conical section extending upwardly and outwardly from the lower chamber toward the upper section;a conduit for feeding liquid directly into the lower chamber;means for developing an upward helical flow in liquid in the conical section;an outlet for liquid in the upper section;a deck spanning at least a portion of the upper section; anda load-bearing central pier having a diameter of at least about 4"" at the point where the liquid is fed into the lower chamber, the load-bearing central pier extending through the lower chamber, the conical section and the upper section and, the load-bearing central pier bearing at least a part of the weight of the deck.