DEVICE FOR FLOATATION CLEANING SEWAGE WATER

FIELD: chemistry; water treatment. ^ SUBSTANCE: present invention pertains to purification of sewage water and can be used in cellulose-paper and petrochemical production. The device for floatation cleaning sewage water comprises a preparation system under excess pressure from water to be purified or its mixture with purified water from a water-air mixture, a floatation chamber, a water-air mixture distributor inside the floatation chamber, a pipe for carrying water-air mixture into the distributor, and a system for outlet of purified water and floating foam from the floatation chamber. The distributor is in form of a set of vertical supporting ring, slit-type annular diffusers with different diameters, water flow baffles in form of discs with varying outer diameter, rigidly fixed to upper ends of annular diffusers and are at different angles to each other. ^ EFFECT: increased output of the device and degree of purification of water. ^ 4 cl, 3 dwg