Remediation Applications - Free Product Recovery

Pump on Demand (P.O.D.) Skimmer
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Application

 

Active recovery of light non-aqueous phase liquid (LNAPL) in 50mm or larger diameter wells, where low recharge is expected and 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., petrol 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 1.3 meters is needed below the product.
    • TR-611 for heavier hydrocarbons (eg., degraded diesel or oils), 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 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 guide: 11 kPa per meter of head ( 0.5 psi per foot). Maximum 550 kPa (80 psi).
  • Performance guide:  at operating of 30psi (210 kPa):
    • 10kg CO2 gas (5.5 Nm3) can recovery over 2,000 L product
      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 950 mm
  • 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.

 

Benefits

 

Minimising air consumption is a 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 gas bottles.  
  • 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 can be recorded with a pulse counter plunbed into the liquids discharge line.

 

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″ for POD pump

TR-75713

Tank-Full Shut-Off device

TR-618

POD Drum Connector

Other Requirements are:

  • air supply (compressor of gas bottles),
  • product recovery tank,
  • hoses and tubing for air and liquid lines

 

Please contact us for further information or a quotation

 

Manufacturer / Principal

Field application of POD Skimmer System using CO2 gas
Field application of POD Skimmer System using CO2 gas