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POD (Pump On Demand) Skimmer System


Application

Active LNAPL recovery in 50mm or larger diameter wells, where low air consumption is important.


Features and Specifications
  • Two models - each use an auto compensating skimmer with over 1 meter travel:
    • TR-610 for light-end hydrocarbons (eg., ULP or un-degraded diesel) for 50mm or larger diameter wells. Product intake elements (bypass and hydrophobic) are positioned within the LNAPL layer by a density float. Product is removed to a sheen. A water column of only 1.3 meters is needed below the product.
    • TR-611 for heavier hydrocarbons (eg., degraded diesel or oils) is suitable for 100mm or larger diameter wells. LNAPL intake is through a screen in the centre of the density float. Product is removed to a thickness of 6-12 mm but field adjustments can be made to achieve thinner layer if necessary. A water column of only 1.0 meters is needed below the product.
  • If using CO2 gas bottles no filter is necessary. For air compressor systems a particulate filter (40 micron) is needed but dry air is not required.
  • Operating air pressure: 11 kPa per meter of head ( 0.5 psi per foot). Maximum 550 kPa (80 psi).
  • Performance guide: Operating at 30psi (210 kPa, 18m TDH):
    • 10kg CO2 gas (5.5 Nm3) can recovery over 2,000 L product
    • 120 Watt solar panel can recover over 2,000 L product/day (required multiple pumps)
    This data is a guide only. Several factors influence actual performance.
  • Volume of product discharge per cycle is 120-140 ml. Measurement of cycle volume for individual systems should be averaged with the pulse counter over say 20 cycles.
  • Tubing: air supply ¼″ OD poly; air exhaust 3/16″ OD poly ; product discharge 3/8″ OD Nylon.
  • Effective travel 600mm (2 feet)
  • Optional Tank-Full Shut-Off device for product storage vessel - all pneumatic - shuts of air to the pump when product tank fills. A single overfill device can be used for multiple pumps.
  • Optional Drum Connector enables a tight seal for the product discharge tube into the storage drum whilst breathing displaced air from the drum as it fills.

User's Advantage

Minimising air consumption is a unique and significant advantage in using the POD Pump. Several related advantages are:

  • The pump can be efficiently powered with either a solar powered compressor or CO2. No need for mains power! A perfect choice for sustainable remediation.
  • Ideal for remote locations with power limitations
  • When powered with CO2 gas bottles there are no noise concerns, no freezing concerns and minimal footprint is required
  • Performance is easily measured in terms of air consumed per volume of product recovered
  • Individual well recovery is recorded with a pulse counter

Ordering Information
Item No. Description
   
TR-610 POD Skimmer System (pump, skimmer, counter)
TR-611 POD High Viscosity Skimmer System (pump, skimmer, counter)
TR-77803 Filter Regulator (for use with compressor air)
TR-620 / 621 Well Seal Assembly 2″ / 4″
TR-75713 Tank-Full Shut-Off device
TR-618 POD Drum Connector
Other Requirements FAP Plus™ Pumps Clincher (optional)
Tank Full Shut Off (optional)
Hoses/Tubing/Cable
Air Supply

Resources
Product Sheets
User manuals
Manufacturer
  • Durham Geo Slope Indicator

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POD Skimmer

Field application of POD Skimmer System using CO2 gas