The Disadvantages with Traditional DAF Pumping Systems
Traditional DAF (Dissolved Air Flotation) pumping systems have so many moving parts. The components include an air compressor, pressure vessel, centrifugal pump and of course the controller to get all three components to work harmoniously.
The disadvantages of such a complicated system are many. For one, the pressure vessel requires regular certification and records must be kept. The controller needs monitoring. The maintenance time and costs for the many components can be costly.
How our EDUR DAF Pump System Can Eliminate these Disadvantages
When one of the largest Chicken processors in Australia wanted to eliminate these complications, and install a more reliable system that requires no controls and is set and forget, they approached Hydro Innovations. The technical staff at Hydro have a combined 80 years of experience in the pump industry. The knowledge of the team is second to none.
After consultation, an EDUR LBU 404 C120L with 5.5kW motor was installed. The EDUR multi-phase pump produces consistent fine micro bubbles perfect for the operation of a DAF tank. The EDUR 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].
The EDUR pump eliminates the need for a compressor, control system, conventional pump, air saturation vessel (and ongoing certifications). The pressure vessel can be removed or bypassed, or they can be incorporated it into the new system.
The Simplicity of the EDUR DAF Pump System
Because of the simplicity of the system, operators will see an improvement in energy consumption [because they are not running compressors] and a vast improvement in maintenance costs. There is no pressure vessel to continually certify, no compressor to maintain, and no more complicated control system to operate. Just “set and forget”.
With the pump running at 10m3 per hour and circulating approximately 10% of the inflow to the DAF tank, the plant has been running free of maintenance and interference for over 4 years.
Speak to Hydro Innovations today to simplify and improve your DAF system with EDUR multi-phase pumps. Hydro Innovations are the exclusive agents for the Edur multi-phase DAF pump.
Both canned motor-pumps and EDUR magnetically coupled pumps have low NPSHr, but because of their “diffuser devices”, EDUR pumps handle some evaporation of refrigerants reliably.
The EDUR LBU multiphase pump is a multi-stage centrifugal pump with the unique capability of being able to pump a liquid/gas mixture. The centrifugal pump is constructed of either C.I./ Bz/ SS, Nodular Cast Iron, All-Bronze, Stainless Steel, or Super-Duplex Stainless Steel construction, so may be used to handle a variety of liquids.
Air, Oxygen, Carbon Dioxide and Ozone gases can be introduced into the suction line and transported and used to mix or disperse the gases. This makes the pump ideal for DAF plants, where the multiphase pumps provide the task of air saturation without the use of compressed air (no compressor, air saturation tank or associated controls).
- Liquid flows to 16 l/s
- Gas content up to 20%
- Cast iron/Bronze/Stainless steel, Nodular cast Iron, All-Bronze, Stainless Steel, or Super-Duplex Stainless Steel construction
- Completely replace the “old” DAF system with a single pump
The EDUR PBU multiphase pump is a single-stage peripheral centrifugal pump with the unique capability of being able to pump a liquid/gas mixture. The centrifugal pump is constructed of stainless steel, so may be used to handle a variety of liquids. Air, Oxygen, Carbon Dioxide and Ozone gases can be introduced into the suction line and transported and used to mix or disperse the gases. This makes the pump ideal for DAF plants, where the multiphase pumps provide the task of air saturation without the use of compressed air (no compressor, air saturation tank or associated controls).
- Liquid flows to 1 l/s
- Gas content up to 15%
- Stainless steel construction
- Completely replace the “old” DAF system with a single pump
Designing pumps since 1927, EDUR Pumpenfabrik has developed a range of pumps for use in refrigeration systems. They have been designed to provide a maximum level of safety, reliability and efficiency. They are the safe option because they use standard TEFC motors, which don’t need to be cooled using the pumped media. They are efficient because they use magnetic couplings. By using magnetic couplings energy is not wasted by pumping fluid over the motor [as with “canned motor pumps”] and back through to the separator.
- Suitable for ammonia, C02, synthetic refrigerants and refrigerants containing hydrocarbons/li>
- No heat transfer from motor to pumped media/li>
- Low maintenance/li>
- Low NPSH values/li>
- Pulsation free operation/li>
- Long service life
The EDUR range of Industry Bloc close-coupled centrifugal pumps are ideal for pumping water and other clean and slightly polluted fluids. They are compact in size, and available in a variety of materials of construction including cast iron, bronze and stainless steel.
Motors are either 2 pole or 4 pole, with IP55 enclosures, and insulation class F.
- All Iron, All Bronze and All Stainless Steel construction
- Flows to 165 l/s
- Heads to 90m
- Handle temperatures from -40oC to 140oC depending on model
- Handle viscosity to 115 cSt
- Handle solids content to 15%
- Single and double mechanical seals available
- Surface Mounted Pump
The EDUR range of Multistage Liquid Gas (LPG) pumps can deliver flows to 45 l/s and pressures to 14 bar (to go to 90 l/s and 40 bar in the not too distant future). These technically superior pumps deliver high efficiencies, low noise levels, low NPSH and reduced axial and radial forces. They also offer less wear than sliding vane pumps and higher efficiencies than side channel pumps. Pumps are ideal for transfer systems and for loading and unloading ships, rail cars, trucks etc.
Motors are 2 pole with IP55 enclosures, and insulation class F and conform to ATEX 94/9/EC. Advantages include:
- Nodular Cast Iron or All Stainless Steel construction
- Able to handle liquid-gas mixtures (outgassing)
- Flows to 45 l/s (soon to double)
- Heads to 23 bar (soon to go to 40 bar)
- Handle temperatures from -40oC to 110oC depending on model
- Balanced Single and double mechanical seals available as well as magnetic coupling
Motor options include:
- ATEX 112G EExe llT3
- ATEX 112G EExde llCT4
Certificates and Reports include:
- Declaration of conformity according 94/9/EC (ATEX)
- Gost-R Certification
- Test Certificate DIN EN 10204 – 2.2
- Acceptance Test Certificate DIN EN 10204 – 3.1
The EDUR range of multi-stage centrifugal pumps can deliver flows to 45 litres per second and heads to 300 metres. They are also available in a variety of materials (Cast Iron, All Bronze, All Stainless Steel and Super-Duplex) enabling them to pump corrosive fluids including seawater. These centrifugal pumps are ideal for booster systems, boiler feed and condensate systems, washing plants, water treatment and hardening systems.
Pumps can be close or long-coupled. Advantages include:
- All Iron, All Bronze, All Stainless Steel and Super-Duplex construction
- Flows to 45 l/s
- Heads to 300m
- Handle temperatures from -40oC to 160oC depending on model
- Single and double mechanical seals available along with gland packing and water cooled gland packing
Our Team is available to answer your pump query within the hour
Hydro’s experts are standing by to help you get the best pump, aerators and genuine spare parts for your specific project.
(02) 9898 1800
Monday – Friday
9am – 5pm