A PROCESS FOR THE FLOCCULATION OF COLLOIDAL SUSPENSION USING ULTRA LOW CONCENTRATION OF LOW MOLECULAR WEIGHT POLYMER

摘要

A process for the flocculation of colloidal suspension using a known low molecular weight polymer in ultra low concentration comprising: a) preparing an aqueous suspension of the colloid having a solid content from parts per million to 5% weight; b) adjusting the ionic strength of the suspension to 0.01 to 0.2 M by adding a known alkali metal salt as herein described under stirring; c) adjusting the pH of the suspension to 3 to 11 by adding a known pH modifier as herein described under stirring; d) adding an aqueous solution of a known low molecular weight polymer having molecular weight of 2000 - 450000 g/mol in ultra low concentration of 25 to 6000 ppb under stirring; and e) allowing the colloid to settle.