The Influence of Surface Covers on the Performance of a Soil Vapor Extraction System

2009 ◽  
Vol 37 (8) ◽  
pp. 621-628 ◽  
Author(s):  
Otmane Boudouch ◽  
Yu Ying ◽  
Belkacem Benadda
Keyword(s):  
Soil Vapor Extraction ◽  
Extraction System ◽  
Vapor Extraction

A Transient Simulation of Heated Soil Vapor Extraction System

Volume 1 ◽  
2004 ◽  
Author(s):  
T. Roy ◽  
R. S. Amano ◽  
J. Jatkar
Keyword(s):  
Heat Source ◽  
Three Dimensional ◽  
Soil Vapor Extraction ◽  
Extraction System ◽  
Vapor Extraction ◽  
Predictive Tool ◽  
Heating Source ◽  
Time Required ◽  
Heated Soil ◽  
Remediation Process

Soil remediation process by heated soil vapor extraction system has drawn considerably attention for the last few years. The areas around chemical companies or waste disposal sites have been seriously contaminated from the chemicals and other polluting materials that are disposed off. Our present study is concentrated on modeling one transient Heated Soil Vapor Extraction System and predicting the time required for effective remediation. The process developed by Advanced Remedial Technology, consists of a heating source pipe and the extraction well embedded in the soil. The number of heat source pipes and the extraction wells depends on the type of soil, the type of pollutants, moisture content of the soil and the size of the area to be cleaned. The heat source heats the soil, which is transported in the interior part of the soil by means of conduction and convection. This heating of soil results in vaporization of the gases, which are then driven out of the soil by the extraction well. The extraction well consists of the blower which would suck the vaporized gases out of the system. A three-dimensional meshed geometry was developed using gambit. Different boundary conditions were used for heating and suction well and for other boundaries. Concentrations of different chemicals were collected from the actual site and this data was used as an initial condition. The analysis uses the species transport and discrete phase modeling to predict the time required to clean the soil under specific conditions. This analysis could be used for predicting the changes of chemical concentrations in the soil during the remediation process. This will give us more insight to the physical phenomena and serve as a numerical predictive tool for more efficient process.

Soil vapor extraction system design by combinatorial optimization

1996 ◽  
Vol 32 (6) ◽  
pp. 1863-1873 ◽  
Author(s):  
Yung-Hsin Sun ◽  
Marshall W. Davert ◽  
William W-G. Yeh
Keyword(s):  
Combinatorial Optimization ◽  
System Design ◽  
Soil Vapor Extraction ◽  
Extraction System ◽  
Vapor Extraction

scholarly journals Soil Vapor Extraction System Optimization, Transition, and Closure Guidance

2013 ◽  
Author(s):  
Michael J. Truex ◽  
Dave Becker ◽  
Michelle A. Simon ◽  
Martinus Oostrom ◽  
Amy K. Rice ◽  
...  
Keyword(s):  
System Optimization ◽  
Soil Vapor Extraction ◽  
Extraction System ◽  
Vapor Extraction

A Study of Soil Remediation by Vapor Extraction System and Air Sparging

2004 ◽  
Author(s):  
T. Roy ◽  
R. S. Amano ◽  
J. Jatkar
Keyword(s):  
Heat Source ◽  
Soil Remediation ◽  
Unsaturated Zone ◽  
Fine Sand ◽  
Soil Vapor Extraction ◽  
Extraction System ◽  
Air Sparging ◽  
Saturated Zone ◽  
Vapor Extraction ◽  
Heated Soil

Soil remediation by heated soil vapor extraction system and air sparging is a new technology developed by Advanced Remedial Technology, Inc. The areas around chemical companies or waste disposal sites have been seriously contaminated from the chemicals and other polluting materials that are disposed off. The process developed by Advanced Remedial Technology, consists of a heater/boiler that pump and circulates hot oil through a one-inch pipeline that is enclosed in a six-inch pipe. This six-inch pipe is vertically installed within the contaminated soil up to a certain depth and is welded at the bottom and capped at the top. Pea gravel or fine sand fills the six-inch pipe and thus acts as a heat transfer medium. The number of heat source pipes and the extraction wells depends on the type of soil, the type of pollutants, moisture content of the soil and the size of the area to be cleaned. The heat source heats the soil, which is transported in the interior part of the soil by means of conduction and convection. This heating of soil results in vaporization of the gases, which are then driven out of the soil by the extraction well. The extraction well consists of the blower which would suck the vaporized gases out of the system. Soil vapor extraction cannot remove contaminants in the saturated zone of the soil that lies below the water table. In that case air sparging may be used. In air sparging system air is pumped into the saturated zone to help flush the contaminants up into the unsaturated zone where the contaminants is removed by SVE well. In our present study we concentrated on modeling one Heated Soil Vapor Extraction System with air sparging and predicting the behavior of different chemicals in the saturated and unsaturated zone of the soil. This analysis uses the species transport and discrete phase modeling to predict the behavior of different chemicals when it is heated and driven out by the sucking well.

Sign in / Sign up

Export Citation Format

Share Document