Colloidal Material in Water
Colloidal materials are by their very definition very small particles. Particle sizes are always submicron and as such treatment is generally rather expensive. In general the treatment is classified in one of two categories, coagulation or submicron filtration. Coagulation involves feeding water treatment compounds into the water which will tend to stick the small particles together into larger particles so that a conventional filter can remove them. Ultra-filtration involves using filters with very small micron ratings so that they can directly remove the colloidal particles.