METHOD AND INSTALLATION FOR THE TREATMENT OF WASTE WATER, WASTE WATER ESPECIALLY URBAN.

摘要

Process for the treatment with activated sludge of waste water, in particular urban waste water, in which the water to be treated, previously subjected to conventional preliminary treatments, such as screenings, defatting, degreasing, and possibly to primary decantation, is brought in an aeration basin, from where it passes into a clarifier-thickness, characterized in that the aeration basin is at high mass load, where the water remains for a reduced time, the mud extracted from the clarifier-thickener being recycled in the aeration tank at a high concentration, made necessary by the reduced residence time of the water in the aeration tank.