FLOTATION PROCESS AND APPARATUS FOR SEPARATING SUSPENDED PARTICLES FROM A LIQUID

摘要

A process and apparatus for separating suspended solid material from a fluid, comprising the steps of adding in a chamber buoyant media as glass spheres with 30-250 micron diameter ( 106 ) to the fluid to form a first mixture of fluid influent and buoyant media, adding a flocculant ( 108 ) to the said first mixture to form a second mixture of influent, buoyant media and flocculant, transferring said second mixture to a flotation chamber ( 200 ), introducing a pressurised fluid ( 203 ) to the second mixture in said flotation chamber, removing separated floating sludge from said flotation chamber, and removing separated clarified effluent from said flotation chamber Optionally, a coagulant may be added after the flocculant.