Page 13 - National Poultry Newspaper

Improve the reliability of your DAF system
FOOD processing com- panies can improve the reliability of their DAF system and reduce main- tenance costs by throwing out their compressor and air saturation (pressure) vessel and replacing their existing pump with an EDUR multi-phase pump, according to Australian distributor Hydro Innova- tions.
The EDUR multi-phase pump is unique in that it is capable of pumping an air/water mixture, so installing this pump ena- bles DA F system owners to disconnect their com- pressor (to free it up to use elsewhere or work it less and save on maintenance costs).
They also don’t need the ongoing maintenance and recertification for the air saturation pressure vessel.
With the pressure vessel, they can remove or bypass it, or incorporate it into the new system.
If they choose to incor- porate it, it just becomes part of the pipe system and will not be a pressure vessel requiring certifica- tion.
The heart of the new system is the EDUR mul- ti-phase pump.
The setup is simple.
It is set up with a throt- tle valve and ‘air snor- kel’ on the suction side of the pump, and a solution line (or reuse the exist- ing air saturation vessel)
and throttle valve on the discharge.
The pump draws water from the ‘clean’ side of the DAF tank, and with the negative pressure cre- ated by partially closing the suction throttle valve, also draws atmospheric air into the pump.
The pump shears and mixes the air with the water and discharges it (under pressure created by the discharge throttle valve) through the dis- charge solution line.
The pressure created and the time spent in the solution line ‘forces’ the air into solution.
When the air/water so- lution reaches the lower pressure in the DAF tank, the air comes out of solu- tion to form tiny micro bubbles (30-70 micron).
The micro bubbles at- tach to fat, oil and grease (FOG) particles and float them to the surface of the DAF tank.
A FOG blanket is formed and mechanically scraped away (as with conventional systems).
The major benefits of
changing to an EDUR system are the simplic- ity of a ‘set and forget’ arrangement and the on- going maintenance cost savings.
No more compres- sor needed means lower maintenance on the com- pressor.
The removal of the pres- sure vessel means a reduc-
tion in maintenance costs and elimination of the need for yearly certifica- tion of the pressure vessel.
The removal of the pres- sure vessel also improves WHS around the system.
More information on the EDUR pump/system may be obtained from Hydro Innovations at hydroinn ovations.com.au
The bank of EDUR pumps producing the ‘blanket’.
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Better outcomes through advanced systems
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National Poultry Newspaper, June 2019 – Page 13
The FOG blanket formed by EDUR pumps at a process plant in Europe.
Ben Collins
Phone: 07 3286 1833
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