METHOD AND DEVICE FOR TREATMENT OF SEWAGE, DEVICE FOR AERATION OF SEWAGE Russian patent published in 1999 - IPC

FIELD: treatment of aeration of sewage. SUBSTANCE: treatment of sewage is carried out by continuous passage of sewage through several treatment stages and its regulation by process control device and monitoring by sensitive elements. Treatment is carried out at mechanical preparatory stages, primary flotation stages, two-step biological stages and at the stage of retreatment flotation. The stages of primary flotation and biological treatment are provided with respective gas-water mixers and stages of primary flotation, stage of biological treatment and stage of retreatment flotation are provided with separators of foam of solid material with draining troughs. Clarified water is supplied from discharge reservoir through water-gas mixers and crossover pipeline of clarified water to separate stages. The method is also suitable for use in portable device of block structure. EFFECT: higher degree of treatment of any sewage with its varying quantities and its varying ingredients. 31 cl, 7 dwg