| 摘要 |
<p>In accordance with the teachings of the present invention, a waste water treatment system for removing sludge from within a rectangular clarifying tank is provided. The waste water treatment system includes a plurality of sludge collector flights (60) attached to a pair of parallel chains (40,42) for collecting sludge and scum within the waste water. Each of the collector flights includes a non-metallic elongated main body portion having spaced top and bottom walls connected by spaced front and rear walls for defining a hollow, interior cavity. Buoyant foam material is disposed within the interior cavity for increasing the buoyancy of the collector flight. The waste water treatment system further includes integrated plastic bull and drive sprockets (36,38) and a chain drive assembly (30) for driving a pair of parallel drive chains (40,42) attached to the integrated plastic bull and drive sprockets. The chain drive assembly includes dual drive shafts exterior to the waste water with each extending across half the width of the tank. <IMAGE></p> |
