A granular filter media dry cell (or filter or bed) for dewatering a liquid composition of water and particulate solids. The liquid composition is applied to the granular filter media to remove water from the liquid composition by passing through the granular filter media with the particular solids collecting...http://www.google.com.au/patents/US7691261?utm_source=gb-gplus-sharePatent US7691261 - Apparatus for combining solids thickening and dewatering in one vessel
