Enhanced soil vapor extraction with soil heating PDF Download

Author: Scott Michael Graves
Publisher:
ISBN:
Category : Soil heating
Languages : en
Pages : 266

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Author: Donald F. Lowe
Publisher: CRC Press
ISBN: 1000945715
Category : Technology & Engineering
Languages : en
Pages : 361

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Book Description
One of the most widely used techniques for treating soils contaminated with volatile organic compounds, soil vapor extraction (SVE) can also be applied to semi-volatile organic compounds (SVOCs) if the soil is heated, by applying electromagnetic energy in the radio frequency (FR) range, to increase the vapor pressure of the contaminants. Although RF-SVE systems used in previous field demonstrations have had varying degrees of success, questions remain concerning its viability and cost-effectiveness. Soil Vapor Extraction Using Radio Frequency Heating: Resource Manual and Technology Demonstration covers detailed scientific and engineering information that answers these questions. The book includes the necessary databases, equations, and example calculations for RF heating. The theoretical and practical information included will facilitate future testing of RF-SVE treatment of soils. Additionally, the book provides information for a full-scale engineering design of potential RF-SVE applications. The authors use this information to examine predicted performance, magnitude of costs, and modifications to the design that may decrease cost. Soil Vapor Extraction Using Radio Frequency Heating: Resource Manual and Technology Demonstration gives an economic analysis of this innovative technology and considers other possible applications for it. Features

Author: Jana Marie Boerigter
Publisher:
ISBN:
Category : Soil vapor extraction
Languages : en
Pages : 270

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Author:
Publisher:
ISBN:
Category : Soil remediation
Languages : en
Pages : 44

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Book Description

Author: Rice University. Energy and Environmental Systems Institute
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages :

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Book Description

Author: Ashley Hendricks
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 54

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Book Description

Author: Rice University. Energy and Environmental Systems Institute
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages :

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Book Description

Author:
Publisher: DIANE Publishing
ISBN: 1428903607
Category : Soil pollution
Languages : en
Pages : 246

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Book Description
This report provides an engineering analysis of, and status report on, selected enhancements for soil vapor extraction (SVE) treatment technologies. The report is intended to assist project managers considering an SVE treatment system by providing them with an up-to-date status of enhancement technologies; an evaluation of each technology's applicability to various site conditions; a presentation of cost and performance information; a list of vendors specializing in the technologies; a discussion of relative strengths and limitations of the technologies; recommendations to keep in mind when considering the enhancements; and a compilation of references. The performance of an SVE system depends on properties of both the contaminants and the soil. SVE is generally applicable to compounds with a vapor pressure of greater than 1 millimeter of mercury at 20EC and a Henry s Law constant of greater than 100 atmospheres per mole fraction. SVE is most effective at sites with relatively permeable contaminated soil and with saturated hydraulic conductivities of greater than 1 x 10 or 1 x 10 centimeter per second (cm/s). SVE by itself does not effectively remove contaminants -3 -2 in saturated soil. However, SVE can be used as an integral part of some treatment schemes that treat both groundwater and the overlying vadose zone. Enhancement technologies should be considered when contaminant or soil characteristics limit the effectiveness of SVE or when contaminants are present in saturated soil. The five enhancement technologies covered in this report are as follows and are described in the following subsections: * Air Sparging * Dual-phase Extraction * Directional Drilling * Pneumatic and Hydraulic Fracturing * Thermal Enhancement.

Author: Rice University. Energy and Environmental Systems Institute
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages :

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 31

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Book Description
Six-Phase Soil Heating (SPSH) was demonstrated as a viable technology for heating low permeability soils containing volatile organic contaminants as part of the Volatile Organic Compounds in Non-Arid Soils Integrated Demonstration (VOC Non-Arid ID) at the Savannah River Site. The soil at the integrated demonstration site is contaminated with perchloroethylene (PCE) and trichloroethylene (TCE); the highest soil contamination occurs in clay rich zones that are ineffectively treated by conventional soil vapor extraction due to the very low permeability of the clay. The SPSH demonstration sought to heat the clay zone and enhance the performance of conventional soil vapor extraction. Thermocouples at 30 locations quantified the areal and vertical heating within the treated zone. Results show successful heating of the targeted clay zone that contained the higher levels of soil contamination. The clay-zone temperatures increased to 1,000 C after 8 days of heating and were maintained near 1,000 C for 17 days. Electrical heating removed 17,000 gal of water from the soil as steam, with peak removal rate of 1,500 gpd of condensed steam.