PLANT FOR WATER FLOTATION TREATMENT Russian patent published in 1998 - IPC

FIELD: treatment of natural and sewage waters to remove impurities, for instance, in form of oil-containing wastes. SUBSTANCE: in the known plant for flotation treatment of water provided with closed hydraulic main line with successively connected main flotation cell, one or several additional flotation cells, pump and, each preceding cell is connected with subsequent one by means of ejectors of the liquid-liquid type in which all inlets of carrying liquid are connected in parallel to outlet of saturator. In this event, inlet of sucked liquid of ejector connected with inlet of main flotation cell is designed for supply of primary treated liquid, in particular, water. To attain more efficient intake of water from each preceding cell to subsequent one, flotation cells, are made in form of tanks isolated from one another; tanks are separated into two subcells by hollow partitions whose height is smaller than the height of tank walls. Cells have similarly located one inlet in bottom zone of the first subcell, one hole in bottom zone of the second subcell for communication with partition hollow and, at least, one outlet in ceiling zone of partition hollow. EFFECT: higher efficiency. 2 cl, 3 dwg