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- Soil Vapour Extraction (SVE)
Soil Vapour Extraction (SVE)
An in-situ technique designed to physically remove volatile and semi-volatile organic contaminants (VOC`s, SVOC`s) from the unsaturated sub-soils, by applying a vacuum to a system of wells across the impacted zone. Air is drawn through the soil enhancing volatilisation of contaminants from the soil pores, with vapour treatment carried out at the surface with granulated activated carbon (GAC) units. A low permeability membrane can be placed across the area to prevent short circuiting.Most popular related searches
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HBR often combine SVE with other techniques such as dual phase extraction (multiphase extraction), air spargingand bioventing. The volatilisation of substance from aqueous solution is governed by its Henry`s Law constant, therefore, we are able to assess the suitability of the approach for specific contaminants. Generally, however, most VOC`s and SVOC`s can be removed and treated including:
- Benzene, Toluene, Ethyl Benzene, Xylenes (BTEX)
- Petroleum and diesel range hydrocarbons
- Chlorinated solvents