DEVICE FOR CLEANING OIL-BEARING WATERS AND EFFLUENTS Russian patent published in 2013 - IPC C02F1/24 C02F1/40 C02F1/74 

FIELD: process engineering.

SUBSTANCE: invention relates to treatment of effluents and may be used for separating oil products therefrom. Proposed device comprises aeration, flotation and accumulation interconnected units. Aeration unit comprises tank 1 wherein air pressure is kept higher than barometric pressure. Feed tube 2 is communicated with nozzle adapter 3 composed of cylindrical sleeve with its bottom bore 6 communicated with compressed air source 7 while its top bore 8 is composed of diffuser open toward cover of tank 1. Nozzle adapter 3 is arranged above surface of effluents 4 in tank 1 on vertical shaft 5 to eject effluents. Aeration unit is communicated with compressed air source 7 and provided with feed pipe 2 communicated with water to be treated. Flotation units is composed of floating cup 13 with exposed top communicated with annular accumulation channel 14 surrounding said floating cup 13. Flotation unit is furnished with branch pipes to discharge floated water 19 and branch pipe to discharge floated material 15 into collection vessel. Bottom of tank 1 has tube communicated via pipeline 16 with aerated water distributor 18 arranged near bottom of floating cup 13. Edge of cup walls is located below water level in annular accumulation channel 14.

EFFECT: better saturation of oil-bearing water and effluent with air to floatation at flotation treatment units.

3 cl, 1 dwg