Soil Vapor Extraction with C3 Technology

Process Description | Power Requirements | Published Papers | GEO Brochure

C3 Soil vapor extraction systems are a combination of compressions, cryogenic cooling, and condensation combined with a proprietary regenerative adsorption technology that efficiently recovers volatile organic compounds (VOC's) from the soil vapor stream. Chemical is recovered as a non-aqueous phase liquid (NAPL) that is temporarily containerized for recycling or disposal. C3 soil vapor extraction systems recover 99.98% of VOC's present in the vapor stream.

New or custom modified systems can be manufactured in 8-12 weeks.

SVE remediation system

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Soil Vapor Extraction Process Flow Diagram

Process Flow Diagram

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xxxSoil Vapor Extraction Process Description
  • Contaminated vapors are removed from soil vapor extraction wells by positive displacement blower, rotary claw, or rotary screw compressor.
  • Entrained liquids are separated with the vapor liquid separator.
  • Extracted air is compressed to 150 psi by reciprocating or rotary screw compressor and conditioned through a refrigerated chiller to further remove water and cool the stream to ambient temperatures.
  • The vapor stream is further cooled to -45°F where the chemical constituents are condensed and separated from the vapor stream.
  • The cleaned vapor stream is polished through a series of regenerative adsorbers that redirect any fugitive VOC's to the front of the system and then granular activated carbon.

System effluent vapor stream [<10 parts per million by volume (PPMV)] polish utilizing granular activated carbon (GAC) prior to discharge to atmosphere may be required in some regions; negligible GAC consumption.

GEO currently manufactures standard soil vapor extraction units of 100, 200, 300, 500 and 1,000 SCFM flow rate capacity.  For larger SCFM requirements, G.E.O. provides custom systems to meet your needs.

xxxSoil Vapor Extraction System Power Requirements


Flow Rate
100 SCFM
200 SCFM
300 SCFM
500 SCFM
Power Requirements

480 VAC 3-phase 100AMP and
240 VAC 70 AMP

480 VAC 3-phase 150AMP and
240 VAC 70 AMP

480 VAC 3-phase 200AMP and
208/240 VAC 70 AMP

480 VAC 3-phase 300AMP and
208/240 VAC 70 AMP

Power Usage
45 KVA
75 KVA
Foot Print
20 x 30 ft
25 x 30 ft
30 x 30 ft
35 x 50 ft
Carbon Polish
Two 200lb drums
Two 400lb drums
Three 400lb drums
Two 1,000lb vessels

xxxSoil Vapor Extraction Published Papers
  • Case Study HA - Sustainable Soil Remediation by Refrigerated Condensation at Sites with "High Concentration" Recalcitrant Compounds and NAPL: Two Case studies - Wiley Periodicals, Inc, 2008


Process Description | Power Requirements | Published Papers | GEO Brochure

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