DEEP BED FILTERS.

Abstract

The object of deep bed filtration is to clarify suspensions, usually of low concentration to produce an acceptable liquid filtrate. This is accomplished by passing the suspension through a deep layer of fine granular material, typically sand. New developments in deep bed filtration involve continuous flow filtration with continuous washing. In the mathematical models presented, the fluid is assumed to be water, and the granular material to be sand. However, the models have generality and could apply to other Newtonian liquids, and other granular material.