Procedure for obtaining a pulverulent product from the reject fraction of a water potabilization plant, the product obtained through such a procedure and the use of that product

摘要

The procedure comprises the following stages: capturing and decanting, filtering, sifting and/or centrifugaly separating the reject waste from a potabilization plant; flocculating the said reject waste with aluminum salts and sedimenting the floccules formed, obtaining a fraction of turbulent water and a first reject fraction; pumping the first rejection fraction; dewatering this latter, preferably in a centrifugal separator, to obtain a second reject fraction; stirring the second reject fraction in a preparatory reservoir, with the addition of a de-flocculant agent for the formation of a barbotine slurry; and drying the barbotine slurry with hot air or inert gas for the obtention of a pulverulent product of a particle size of between 50 and 400 microns, by spraying or atomizing in an atomizer at a temperature of between 100 DEG C and 500 DEG C. The product thus obtained can be used as a component in the manufacture of structural ceramic products or coatings and/or as coloring.