Current Team Research Focus - Spring '11
Effect of a Floc-Rollup Phenomenon on Flocs
Introduction
Traditionally, inclined plate and tube settlers are used to create compact sedimentation tanks. Conventional design guidelines are based on obtaining a desired sedimentation design capture velocity. Theoretically, this capture velocity can still be achieved while greatly reducing conventional plate spacing or tube diameter. Yet, the greatest concern with small plate spacing is the danger of settling sludge being swept out with the finished water - the phenomenon known as the floc-rollup. It is the purpose here to estimate the effect of the floc-rollup inside the plate settlers.
Particle Capture by a Lamella
The experimental testing was performed on tube settlers and the design capture velocity of tube settlers in which the ends of the tube are perpendicular to the axis of the tube is given by
