Remediation Systems
gPRO High Pressure Gas Infusion in-situ bioremediation
The gPRO® HP production process entails delivering gas by mass transfer through hollow fibres mounted in pressurised fibre modules. For gases such as oxygen, 25-150 mg/l of dissolved oxygen can be produced. Dissolved gas concentrations can be adjusted to suit specific conditions. Typically the process is used to infuse gas into abstracted and treated groundwater for re-injection for enhanced biodegradation.
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The gPRO® HP then delivers the gas infused water via a distribution header back to groundwater. Pressure is regulated in order to ensure that the dissolved gas does not come out of solution prior to re-injection. The gPRO® HP is best suited to enhance existing groundwater pump and treat systems coupled with groundwater re-injection.
The gPRO® HP is a simple to use, low energy, low maintenance bioremediation system that will treat a multitude of contaminants aerobically or anaerobically (depending upon the gas infused):
Treatable Contaminants
Aerobic
- Hydrocarbons (Oxygen)
- MTBE (Oxygen)
- CAH (VC) (Oxygen)
- CAH (TCE, DCE) (Oxygen and Alkane Gas)
- 1,4 Dioxane (Oxygen andAlkane Gas)
- Ammonia (Oxygen)
Anaerobic
- CAH (Hydrogen)
- Nitrate (Hydrogen)
- Perchlorate (Hydrogen)
- Chrome 6 (Hydrogen or Hydrogen Sulfide)
gPRO® HP can also be utilized with carbon dioxide or ammonia for pH adjustment
Key Benefits
- Low power consumption and installation costs;
- Use of 1/2 inch or larger diameter wells
- Inject treated discharge water or freshwater
- Infuses ANY miscible gas into water
- Can drastically reduces Pump and Treat times
- Higher dissolved gas levels at ambient pressure
- Increased biological degradation rates
- No gas loss or off gassing or risk of vapour intrusion
- No preferential pathways
- No gas entrapment leading to mounding
- An oxygen generator (for oxygen applications) can be integrated, in place of oxygen cylinders
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