Method and apparatus for separation of solids and liquid suspensions by filter unclogging aided filtration

Abstract From the Canadian patent

A method of separating solid particles from a liquid suspension including , steps of filtering, the liquid suspension in closed circuit through a filter in a filtering , direction forming, particles on a surface of a filter fabric. The direction of the liquid suspension filtering is, reversed, thereby passing the liquid through the filter in a reverse direction re-suspending, the solid particles. The filtering and reversing are repeated until substantially all the liquid, suspension has passed through the filter in the filtering direction and a , solid particle residue, is formed on the surface of the filter fabric. An airflow circuit independently adds and, removes air from the liquid …