none
none

GERMAN TECHNOLOGY CUTS DAF COSTS

25-01-2016
by 
in 

A single DAF Pump is able to replace the entire air bubble system on DAF (Dissolved Air Floatation) plants, authorised distributor, Hydro Innovations claims.

Their EDUR® Multiphase pumps draw in air through a “snorkel” in the suction line, sheer the air, then feed it into the DAF plant, producing a discharge stream into the tank that is saturated with 30 to 50 micron air bubbles.

Conventional DAF systems normally consist of a wastewater tank, compressor, air saturation vessel, and effluent pump.

The effluent pump draws effluent from the tank and pumps it into the air saturation vessel. A compressor pumps air into this same vessel.

The air/water mixture is “saturated” under pressure, then released back into the wastewater tank at atmospheric pressure where tiny bubbles form and adhere to the suspended matter (fats, oils and other small wastewater particles).

The bubbles (with their attached suspended matter) float to the surface of the tank, where floatables can be skimmed off the surface.

By using EDUR® Multiphase pump technology, asset owners can replace the compressor, air saturation (pressure) vessel, control system and multistage pump with a single pump that can replicate (or improve) the performance of the “conventional” system.

The EDUR pump is set up the same as a conventional pump, to draw liquid from the “clean” side of the DAF tank, but it also draws atmospheric air into its suction line instead of using a compressor for this task. “Standard” pumps are not capable of handling air this way.

The air is mixed with the water as it moves through the pump, and the air goes into solution as it is saturated under pressure.

The EDUR® Multiphase (DAF) pump greatly simplifies the system, and because of this, capital costs and maintenance costs can be greatly reduced.

No compressor to maintain and no pressure vessel to maintain and certify. There is also an energy saving, because there is no longer a running compressor.

EDUR® multiphase pumps can deliver flows from 1 l/s [for smaller DAF plants] to 15 l/s (which cater for wastewater in-flows of up to 150 l/s with a single pump, or use multiple pumps if flows are higher) and produce pressures to 12 Bar.

A variety of materials and seal arrangements enable EDUR pumps to operate in a very wide range of applications.

Available materials include ductile iron, “gunmetal” bronze, stainless steel and super duplex. Mechanical seals are available as balanced, double and tandem.

 

Hydro Innovations

Ph: 0298981800

www.hydroinnovations.com.au

Related news & editorials

  1. 23.02.2018
    23.02.2018
    by      In
    The optoNCDT 1750 laser triangulation sensor is now available from Bestech Australia with extended measurement ranges of 500 and 750mm. This is a major addition to the existing 2-200mm measurement range, offering superior performance to its predecessor, the ILD1700.
    The 1750 laser triangulation... Read More
  2. Silent DieselDIESEL-POWERED PRESSURE CLEANER IS A QUIET ACHIEVER  The latest model of high-pressure water cleaner from Spitwater uses a “silent” diesel engine to provide industrial-grade cleaning performance in applications where noise might be a problem.  Designed and built at Spitwater’s Albury manufacturing plant, the Model SW15200DES Silent Diesel delivers 15L/min hot or cold water flow at 200bar pressure in a self-contained, portable machine.   Like all Spitwater machines, the new unit is based on a th
    21.02.2018
    21.02.2018
    by      In
    The latest model of high-pressure water cleaner from Spitwater uses a “silent” diesel engine to provide industrial-grade cleaning performance in applications where noise might be a problem.
    Designed and built at Spitwater’s Albury manufacturing plant, the Model SW15200DES Silent Diesel delivers 15L... Read More
  3. 20.02.2018
    20.02.2018
    by      In
    Turck has developed a novel protocol that enables high-density networking with I/O resource constrained PLCs. The Backplane Ethernet Extension Protocol (BEEP) can be used to network up to 33 devices and link them to a PLC on a single connection using a single IP address.
    The first device in the I/O... Read More
  4. 20.02.2018
    20.02.2018
    by      In
    MTI See-Thru Insulated Traffic Doors provide a rugged low-maintenance solution to maintaining climate control between different internal temperature zones.
    The strongly built 44mm-thick traffic doors are made with a rigid PVC framework, a high-impact ABS plastic skin, internal foam insulation and a... Read More