Soil vapor extraction technology

The reactor is an aerobic, plug flow, packed-bed biofihn reactor. Reticulated polyurethane (PUR), a foam with large surface area, is used as the substrate for microorganisms. The substantial area available on the PUR for contact results in a high biomass concentration and thus high reaction rates at short retention times. Biopur can be used in conjunction with soil vapor extraction technology. 

Decision-Support Software for Soil Vapor Extraction Technology Application Hyper-Ventilate... 

Soil Vapor Extraction Technology Reference Handbook... 

U.S. Environmental Protection Agency (EPA) (1991b) Soil vapor extraction technology reference handbook. Office of Research and Development, Cincinnati, OH, EPA/540/2-91/003... 

Economic feasibility studies suggest that even at the present state of the art photocatalytic technology indeed can be competitive with the traditional carbon adsorption or incineration technologies in treatment of contaminated soil vapor extraction vents and small scale VOC-containing vents [28]. Rapid progress in basic and applied research in photocatalysis suggests... 

Soil vapor extraction (SVE) is a relatively new yet widely applied technology for the remediation of soils contaminated with volatile organic compounds (VOC) in the unsaturated zone above the water table (vadose zone). The process consists of generating an airstream through the contaminated soil subsurface in order to enhance the volatilization of organic contaminants and thus remove them from the soil matrix.913... 

Soil vapor extraction has become a very popular technology since the mid-1990s, because it has several important advantages ... 

Lowe, D.F., Oubre, C.L. and Ward, C.H., Eds., Soil vapor extraction using radio frequency heating, in Resource Manual and Technology Demonstration, Lewis Publishers, Boca Raton, FL, 1999. 

Soil vapor extraction (SVE) can be used to remove volatile contaminants and, when combined with another technology, to treat nonvolatile contaminants. If contamination has reached the aquifer, it is necessary to use SVE in combination with groundwater pumping and air stripping. 

T0401 Imbibitive Technologies Corporation (IM-TECH), Imbiber Beads T0406 In Situ Soil Vapor Extraction (SVE)—General... 

T0641 Radian International, L.L.C., Aquadetox/Soil Vapor Extraction (SVE) T0833 Ultraviolet Oxidation (UV/Oxidation)—General T0853 UV Technologies, Inc., UV-CATOX Technology... 

Based on data from the U.S. Environmental Protection Agency (EPA) Superfund Innovative Technology Evaluation (SITE) demonstration, the total cost for PF extraction was estimated to be 307/kg of trichloroethene (TCE) removed. This demonstration was conducted over a 4-week period in August and September of 1992 at an industrial site in Somerville, New Jersey. The cost estimate includes expenses associated with both PF and soil vapor extraction. Major cost factors were labor (29%), capital equipment (22%), VOC emission control (19%), site preparation (11%), and residuals management (10%) (D10589F, p. v). 

The vendor also incorporates other technologies to act in conjunction with biodegradation, such as air sparging, soil vapor extraction, or pump-and-treat systems. This technology is patented and is commercially available from BioRemedial Technologies, Inc. All information contained herein was provided by the vendor and has not been independently verified. 

According to the vendor, MITUs can be half the cost of alternative technologies such as incineration, landfilling, or soil vapor extraction (SVE) (D17269U, p. 8). At a petroleum and gas distribution site in Schuylkill Haven, Pennsylvania, 4200 tons of contaminated soil were treated at a cost of 18.63/ton. (D17269U, p. 30). Additional vendor-supplied cost information is presented in Table 1. 

The ChemPete bioremediation technology works under buildings, roads, and other structures that would have to be demolished to apply many other technologies. The ChemPete technology can be used in conjunction with soil vapor extraction. Preliminary tests on bioremediation of nickel, in which the valence state is changed rendering it insoluble, have also been conducted. 

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