Clarification of water by addition of colloidal silica followed by addition of polyelectrolyte.

摘要

This invention relates to the purification of water containing turbidity-causing components. The procedure involves ADD WATER SOL AQUEOUS TURBID A colloidal silica having an average PARTICLE SIZE 1 to 150 nm and a coagulant POLYMERIC WATER BASED a molecular weight of 2,000 to 2,000,000. Components can be added separately or mixed together to add them simultaneously. SILICA COLLOIDAL can also PUT BY PASANDOLA resin Cationic premutation, which can be a cationic polymer before adding the coagulant. They are also claimed a composition of silica sol and a coagulant.