Introduction and Overview

Abstract

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Cake filtration represents one of the several different mechanical methods to separate particles from liquids. Cake filtration offers, in comparison to other mechanical particle-liquid separation techniques, the advantageous possibility of direct solids post-treatment. This enables particle washing by cake permeation and the comparatively lowest mechanically achievable solid moisture contents. If the boundary conditions for cake filtration are not fulfilled, alternative separation techniques such as density separation, depth, cross-flow, or blocking filtration must be used. Surface filtration can be subdivided principally into blocking, cross-flow, and cake filtration. To characterize the whole cake filtration process, several experimental methods and model equations from different authors are available, which are all based on a similar physical fundament. The procedures and apparatuses for the mechanical solid-liquid separation in general and in particular for cake filtration are under permanent research and development in view of new challenges and requirements to the separation results.