APPARATUS FOR FLOTATION-FILTRATION PURIFICATION OF WATER Russian patent published in 2005 - IPC

FIELD: equipment for purifying of sewage water from petroleum products, fats, suspended substances, surfactants, metal hydroxides, organic contaminants etc, and for treating water for various purposes.

SUBSTANCE: apparatus has processing unit arranged in its upper part and comprising flotation chamber and filter, and vessel arranged in lower part and adapted for accumulation of purified water. Vessel is connected through inlet pipeline with processing unit. Pumping unit, ejector with branch pipe for supplying of atmospheric air, saturator, and pipeline system are arranged separately from processing unit. Flotation and filtering chambers are arranged in horizontal plane and made in the form of individual vessels defined by successively arranging in axis of symmetry of single casing directed from wall of single casing to center of partition made in the form of ring with member cut through the entire height of ring; limiting cylinder defining in conjunction with sectioned walls cavity of flotation zones and cavity for collecting of froth product, said cylinder being adapted for providing flowing of floated water from second zone of flotation chamber into transition processing zone owing to apertures in lower limiting cylinder, dividing-overflowing partition adapted for separating flotation chamber from filtering chamber and made in the form of cylindrical pipe with semi-circular apertures on its upper end. Vertical plate divides pipe cavity into small and large zones.

EFFECT: increased extent of purifying of sewage water, wider operational capabilities of equipment, and reduced area employed by equipment.

2 dwg