Application of steam injection and electrical heating for enhanced in situ soil and ground water treatment

Conference · · Ground Water; (United States)

OSTI ID:6913781

Udell, K S ^[1]; Aines, R; Newmark, R ^[2]

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1. Univ. of California, Berkeley, CA (United States). Berkeley Environmental Restoration Center
2. Lawrence Livermore National Lab., CA (United States)

The acceleration of recovery rates of second phase liquid contaminants from the subsurface during gas or water pumping operations is realized by an increase in soil temperature. Of the various methods of delivery of thermal energy to soils and ground water, steam injection appears to be the most economical and versatile technique for soils with sufficient permeability. The use of steam injection to recovery volatile semivolatile, and nonvolatile contaminants from the sub-surface also allows the exploitation of various thermodynamic and hydrodynamic mechanisms. These mechanisms include vaporization of liquids with boiling points below that of water, enhanced evaporation rates of semivolatile components, physical displacement of low viscosity liquids, dilution and displacement of aqueous contaminants, and removal of residual contaminants from low permeability zones by depressurization and vacuum drying. Electrical heating provides a means of preferentially heating the low permeability zones. A recently completed field-scale demonstration of the patented combined steam injection and electrical heating enhanced extraction technology (Dynamic Underground Stripping) to remove gasoline at a site at Lawrence Livermore National Laboratory confirms the effectiveness of this technique and its applicability to contaminants found above and below the water table.

• OSTI ID: 6913781
• Report Number(s): CONF-9410209--
• Conference Information: Journal Name: Ground Water; (United States) Journal Volume: 32:5
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020900 -- Petroleum-- Environmental Aspects
053003* -- Nuclear Fuels-- Environmental Aspects-- Chemical & Thermal Effluents-- (1992-)
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
CLEANING
DECONTAMINATION
DEMONSTRATION PROGRAMS
GROUND WATER
HYDROCARBONS
HYDROGEN COMPOUNDS
LAWRENCE LIVERMORE LABORATORY
LAWRENCE LIVERMORE NATIONAL LABORATORY
NATIONAL ORGANIZATIONS
OIL SPILLS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
REMEDIAL ACTION
REMOVAL
SOILS
TECHNOLOGY ASSESSMENT
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WATER