Download or read book Design Operation and Monitoring of in Situ Soil Vapor Extraction Systems written by and published by . This book was released on 1994 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Model for Economically Based Conceptual Design of Soil Vapor Extraction Systems written by and published by . This book was released on 1990 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil vapor extraction, also known as in situ soil venting, is rapidly becoming a widespread technique for the remediation of sites containing soils contaminated with volatile compounds. In this process, the soil is decontaminated in place by inducing air flow through the contaminated soil zones. Air, removed from the soil through extraction vents using a vacuum blower, may be resupplied by infiltration from the surface or through forced or passive inlet vents. This air flow sweeps out the soil gas, disrupting the equilibrium existing between contaminants which are (1) sorbed onto the soil particles, (2) dissolved in soil pore water, (3) held in a separate contaminant phase, and (4) existing in the vapor phase. This causes vaporization of the contaminants and removal in the extracted gas stream. Emissions control devices are often necessary for treatment of the gas stream prior to discharge. By preventing the hazards caused by subsurface vapor movement and by removing the contaminants before they reach groundwater, soil vapor extraction is extremely useful in decontaminating unsaturated zone soils. The technology may also be used in conjunction with pump-and-treat groundwater remediation techniques for complete cleanup of soil and groundwater in cases where the contaminants have reached the water table. 22 refs., 9 figs.
Download or read book Engineering and Design written by Us Army Corps Of Engineers and published by Military Bookshop. This book was released on 2002-06-01 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual provides practical guidance for the design and operation of soil vapor extraction (SVE) and bioventing (BV) systems. It is intended for use by engineers, geologists, hydrogeologists, and soil scientists, chemists, project managers, and others who possess a technical education and some design experience but only the broadest familiarity with SVE or BV systems.
Download or read book In Situ Treatment Technology written by Evan K. Nyer and published by CRC Press. This book was released on 1996-04-03 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most exciting technical area in the remediation field today is "in place" or "in situ" technologies. This new book in the popular Geraghty & Miller series provides a single reference source, consolidating information on the various in situ technologies. Each of the primary areas is covered in a separate chapter, allowing for in-depth reviews, including laboratory and pilot plant studies, full-scale design, operation and maintenance, cost analysis, and case histories. Expert accounts are also given emerging in situ technologies. One of the unique features of this new book is its excellent coverage of the geologic foundation and limitations of each of the technologies. Material at the beginning of the book explains the limitations of pump and treatment remediation, and shows how some of these limitations may also apply to in situ technologies. This section provides the reader with a basis on which to analyze and predict the possible success of any new in situ methods that are developed in the future.
Download or read book Guidance for Design Installation and Operation of in Situ Air Sparging Systems written by and published by . This book was released on 1993 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Selected Enhancements for Soil Vapor Extraction written by and published by DIANE Publishing. This book was released on 1997 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book HyperVentilate Users Manual written by Paul C. Johnson and published by . This book was released on 1992 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Vapor Extraction Technology written by Tom A. Pedersen and published by . This book was released on 1991 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Vapor Extraction Using Radio Frequency Heating written by Donald F. Lowe and published by CRC Press. This book was released on 2023-05-31 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book EPA Environmental Engineering Sourcebook written by J. Russell Boulding and published by Routledge. This book was released on 2019-03-04 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Environmental Protection Agency (U.S. EPA) publishes several series of documents that provide up-to-date information about environmental site assessment and remediation. The EPA Environmental Engineering Sourcebook includes papers and bulletins that focus on remediation of soil and groundwater, making them available in a convenient form. This book compiles thirty-five documents- written by recognized leaders - on major methods and promising new techniques for hazardous waste treatment and site remediation. Each chapter evaluates the type of contaminant and site characteristics needed to select a technology for use at hazardous waste sites. The EPA Environmental Engineering Sourcebook presents EPA documents in an easy-to-use, concise format. It contains numerous graphs, charts and figures that make it an important resource for those involved in environmental protection, site remediation, and site assessment. Features Contains chapters written by recognized leaders Examines major methods as well as assesses new techniques for hazardous waste treatment and site remediation Presents information in an easy-to-use, concise format Evaluates each type of contaminant and site characteristics for selecting technology at hazardous waste sites
Download or read book Soil Vapor Extraction System Optimization Transition and Closure Guidance written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil vapor extraction (SVE) is a prevalent remediation approach for volatile contaminants in the vadose zone. A diminishing rate of contaminant extraction over time is typically observed due to 1) diminishing contaminant mass, and/or 2) slow rates of removal for contamination in low-permeability zones. After a SVE system begins to show indications of diminishing contaminant removal rate, SVE performance needs to be evaluated to determine whether the system should be optimized, terminated, or transitioned to another technology to replace or augment SVE. This guidance specifically addresses the elements of this type of performance assessment. While not specifically presented, the approach and analyses in this guidance could also be applied at the onset of remediation selection for a site as a way to evaluate current or future impacts to groundwater from vadose zone contamination. The guidance presented here builds from existing guidance for SVE design, operation, optimization, and closure from the U.S. Environmental Protection Agency, U.S. Army Corps of Engineers, and the Air Force Center for Engineering and the Environment. The purpose of the material herein is to clarify and focus on the specific actions and decisions related to SVE optimization, transition, and/or closure.
Download or read book Alternatives for Ground Water Cleanup written by National Research Council and published by National Academies Press. This book was released on 1994-02-01 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: There may be nearly 300,000 waste sites in the United States where ground water and soil are contaminated. Yet recent studies question whether existing technologies can restore contaminated ground water to drinking water standards, which is the goal for most sites and the result expected by the public. How can the nation balance public health, technological realities, and cost when addressing ground water cleanup? This new volume offers specific conclusions, outlines research needs, and recommends policies that are technologically sound while still protecting health and the environment. Authored by the top experts from industry and academia, this volume: Examines how the physical, chemical, and biological characteristics of the subsurface environment, as well as the properties of contaminants, complicate the cleanup task. Reviews the limitations of widely used conventional pump-and-treat cleanup systems, including detailed case studies. Evaluates a range of innovative cleanup technologies and the barriers to their full implementation. Presents specific recommendations for policies and practices in evaluating contamination sites, in choosing remediation technologies, and in setting appropriate cleanup goals.
Download or read book HyperVentilate Users Manual written by Paul C. Johnson and published by . This book was released on 1993 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EPA National Publications Catalog written by United States. Environmental Protection Agency and published by . This book was released on 1995 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Vapor Extraction Using Radio Frequency Heating written by Donald F. Lowe and published by CRC Press. This book was released on 1999-12-06 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Design Operations and Maintenance of the Soil Vapor Extraction Systems for the 200 West Area Carbon Tetrachloride Expedited Response Action written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remediation Engineering of Contaminated Soils written by Donald L. Wise and published by CRC Press. This book was released on 2000-07-25 with total page 1011 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers thorough coverage of the remediation of soils contaminated by hazardous wastes, including materials, analytical techniques, cleanup design and methodology, characterization of geomedia, monitoring of contaminants in the subsurface, and waste containment. Cites specific case studies in hydrocarbon remediation that offer a concise overview of possible technological approaches.
