IEG-GZB

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Possible Areas of Application

The IEG GZB-process is an in-situ system for the remediation of contaminated aquifers, especially those contaminated with volatile and semi-volatile hydrocarbons, using a combination of chemical, physical and biological processes.
 

Primary Components

A GZB process unit consists of a specially adapted groundwater well, at least one submersible pump, a negative pressure stripping reactor located in a sub-surface vault, an above-ground mounted blower, and a waste air decontamination system, for example disposable filters or regenerative activated carbon filters.
 
 

The following advantages can be specified:

• no groundwater extraction, no waste water, no discharge fees
• no draw down of groundwater, no structural damage to existing buildings
• treated groundwater is enriched with dissolved oxygen which increases the potential for aerobic degradation processes
• low energy take-up (a complete system needs about 4.5 kW/hr)
• low space requirements (subsurface installation is possible)
• simultaneous treatment of unsaturated zone and capillary fringe by vapor extraction and free product recovery
• Adjustment of the circulation pattern according to the contamination
• Variety of possible combination with state-of-the-art treatment technologies according to the type of contamination

 

Last Update: 06. August 1999

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