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IEG Technologies
CUBIC, Building 45
Cranfield University
Cranfield
Bedfordshire MK43 0AL
Tel: +44 (0) 01234 758058
Email: info@iegtechnologies.co.uk
WWW: www.iegtechnologies.co.uk
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IEG GCWTM systems are specially designed and configured on a site-specific basis, depending on geoenvironmental and contaminant characteristics, to provide accelerated aerobic, enhanced anaerobic or sequential anaerobic to aerobic reactions to deliver more effective treatments.
By selectively applying biological, chemical, and physical processes, IEG's soil air and groundwater circulation technologies are applicable for a wide range of contaminants, including hydrocarbons (gasoline, diesel, kerosene, fuel oils), polycyclic aromatic hydrocarbons (PAH), creosote, chlorinated solvents (trichloroethane, tetrachloroethane), pesticides and nitrates, ammonia and metals.
For complex problems, GCWTM technology can also be coupled with other IEG in-situ process methods such as vacuum liquid recovery, bioaugmentation, bioventing, soil flushing, soil air circulation and coaxial groundwater circulation/air sparging.
IEG's solutions deliver significant advantages over other in-situ remediation methods. They are: -
Quicker - groundwater circulating through the aquifer enhances the mobilisation of adsorbed and dissolved contaminants by forcing flow through less permeable lenses and drawing them to the treatment well; in addition, circulation flow accelerates and enhances delivery of oxygen and nutrients to contaminated zones, stimulating natural in-situ bioremediation much faster than other techniques.
Smaller - compact designs require less space on-site.
Smarter - in-ground circulation flow contains groundwater plumes and treats contaminants simultaneously in one well - operates as a "virtual Permeable Reactive BarrierTM".
Greener - requires low negative pressure-low energy, delivering maximum treatment efficiency, with minimum waste.
Other benefits offering potential for significant cost and time savings include: -
Minimal ground excavation and solid waste generation.
No abstraction of groundwater for above ground treatment - the aquifer is the treatment zone.
No reinjection wells required - no injection consent.
No trade effluent discharge - no discharge consent.
Achieves simultaneous hydraulic containment and physical, chemical and/or biological treatment.
IEG's range of patented in-situ systems to treat contaminated soil and groundwater include:
IEG Multi-level Sampling WellTM (IEG MLSWTM)
IEG Vacuum Liquid Recovery WellTM (IEG VLRWTM)
IEG Vacuum Vapour ExtractionTM (IEG VVETM)
IEG Soil Air Circulation-Vacuum Vapour ExtractionTM (IEG SAC-VVETM)
IEG Soil Air Circulation-BioventingTM (IEG SAC-BTM)
IEG Coaxial Groundwater Circulation-SpargeTM (IEG CGC-SpargeTM)
IEG Groundwater Circulation WellTM (IEG GCWTM)
IEG Vacuum Vaporiser WellTM (IEG UVBTM)
IEG Soil Circular Flushing WellTM (IEG SZBTM)
IEG Multi-function WellTM (IEG MFWTM)
IEG Compact Vacuum StripperTM (IEG CVSTM)
IEG Granular Activated Carbon StripperTM (IEG GACSTM)
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