PROCESS FOR TREATING LIQUID EFFLUENTS WITH ACTIVATED SLUDGE

摘要

This process is characterized in that an inert material of mineral origin is injected into the activated sludge, this material being immediately dispersed homogeneously in the activated sludge, in order to create a mixed culture comprising both and in a single bacterial floc, heterotrophic, free and autotrophic species partially fixed on the particles of said material inside the floc, the structure of the latter, which contains of the order of 40 to 65% of organic matter, the remainder being said material inert, consisting of one or more particles of said material surrounded by activated sludge, and in that the extraction of the excess sludge is carried out continuously and without separation of the injected material.