EDUR-pumps are designed to work with water and wastewater technologies and help to save energy, protect the environment and reduce your operating costs.
The EDUR Dissolved Air Flotation (DAF) pump is an effective way to remove contaminants from waste water. It uses microscopic air bubbles, which are created in the normal operation of the pump, to mix with water containing suspended solids, oils, and other contaminants.
The small bubbles attach to the suspended particles, giving them a net positive buoyancy. The clusters rise smoothly to the surface, forming a float that is skimmed off by skimming.
The operator can introduce air and recycled “clean” effluent to the pump suction. The amount of air is controlled by the operator through simple valves. Under pump discharge pressure, this mixture becomes supersaturated with air microbubbles.
In a conventional DAF system, air-saturated water is fed into the flotation tank by way of compressors, pressure tanks and a tension release valve. Typical DAF systems are expensive, require a lot of maintenance and service and cost more to operate. An EDUR DAF system is nearly twice as efficient with lower operation costs.Our (multiphase) pumps are able to reduce the equipment requirements including the air saturation tank, compressor, conventional pump and the control system normally associated with DAF (Dissolved Air Flotation) systems, into one unit.
The pump has the unique ability to draw atmospheric air into the suction line, shear it, mix it with the water being drawn from the “clean” end of the DAF tank, and saturate the air into the water (by pressurising it).
Advantages:
- improvement in energy consumption (because they are not running compressors)
- a vast improvement in maintenance costs
- there is no pressure vessel to continually certify
- no compressor to maintain
- no more complicated control system to operate
A single EDUR pump is able to handle DAF in-flows from as little as 10 cubic metres per hour, up to 600 cubic metres per hour, but with multiple pumps can handle much higher in-flows. This system is suited to municipalities for waste water treatments as well as food process, paper process and other industrial applications that the DAF systems are found.The major benefits of changing to an EDUR system are the simplicity of a “set and forget” arrangement, and the on-going maintenance cost savings.
No more compressor needed means lower maintenance on the compressor. The removal of the pressure vessel means a reduction in maintenance costs and elimination of the need for yearly certification of the pressure vessel.
The removal of the pressure vessel also improves WHS around the system.
Click here to download our Waste Water Brochure
Hydro Innovations provides a wide range of dissolved air flotation systems to treat wastewater, process waste activated sludge, treat groundwater, remove metals or algae, or one of many other applications that this technology is suitable for.
More information on these pumps can be obtained by contacting Hydro Innovations on 02 9898 1800 or by email on sales@hydroinnovations.com.au