Patent ID: 6228215
Filing Date: 2001-05-08
Classification: D21C,Y10S

Abstract:
A method of treating a liquid slurry comprising the steps of positioning a mat having a liquid phase and containing material selected from the group consisting of dissolved solids, suspended solids and mixtures thereof comprising solid contaminants between a pair of porous endless belts to provide a composite structure, moving the composite structure through a treating zone and subjecting the mat to alternate stages of compression and relaxation, passing a liquid stream containing a substance selected from the group consisting of dissolved solids, suspended solids, and mixtures thereof comprising solid contaminants through the treating zone countercurrently to the direction of movement of said composite structure through said zone, to cause said liquid stream to impregnate the mat when the mat is subjected to relaxation and transfer said substance to the liquid phase of the mat, and removing the mat from said belts.