PHYSICAL & CHEMICAL SYSTEMS
The passion for solving water treatment problems
Use our specialized knowledge and experience
- Treatment of industrial waste water
- Leachate Plants
- Resorts Waste Water
- Hospital Discharges
- Small Municipal Places Waste Water
FLOTATION SYSTEMS
Dissolved Air Flotation (DAF) is a separation technique whereby the adherence of micro air bubbles to suspended pollutants in water is used to enhance separation efficiency. DAF is applied when the density of the suspended pollutants is close to that of the water so that gravity separation becomes very difficult.
Micro bubble formation
Micro bubbles can be generated by dissolving air in pressurized water and de-pressurizing this water. In the DAF units, designed by Omnia Water, this process is effected in a recirculation system. Part of the treated water is recycled to the feed via a special centrifugal pump. Air is added to this recycle stream at pressure site of the pump. The air will dissolve in the water by using special mixing zones.
The air saturated water is introduced into the DAF unit feed line and inlet points at the bottom of the unit.
The unique parts are:
- Special circulation system for creating micro bubbles.
- Waste water inlet system. Important for optimal use of the content of the unit.
- Integrated sludge thickener on top of unit. To achieve as high as possible solids content and minimize sludge volume.
- Shaftless auger at bottom. To transport and minimize volume settled sludge.
Depending on the type of water our engineering team selects the most suitable type of DAF. Types of DAF systems Omnia water Treatment offers are:
- Counter Current Plate Pack Flotation Systems (CCFS) For Medium Polluted Waste water
- Open Tank Flotation Systems (OTFS) For Highly Polluted Waste Water
- Cross Flow Plate Pack Flotation Systems (CFFS) For large Capacities
- Special Internals Only (SIO) For large capacities built in concrete tanks