TREATMENT OF AN AQUEOUS SUSPENSION OF SOLID PARTICLES

摘要

The invention relates to a process of concentrating or dewatering an aqueous suspension of solid particles comprising the steps of, providing an aqueous polymeric flocculant composition or an aqueous polymeric coagulant composition by combining polymeric flocculant material or polymeric coagulant material with water, adding an effective flocculating or coagulating amount of the aqueous polymeric flocculant or coagulant composition into the aqueous suspension of solid particles thereby bringing about flocculation or coagulation of the solid particles, subjecting the so formed flocculated or coagulated suspension of solid particles to a concentrating or dewatering stage, wherein the aqueous polymeric flocculant or coagulant composition and/or the water which is to be combined with the polymeric flocculant or coagulant material is/are treated by a magnetic field and/or electric field with non- sinusoidalwave pulses at a sweep offrequencies. The invention also relates to a process of preparing an aqueous polymeric flocculant or coagulant composition.