Download or read book Dense Nonaqueous Phase Liquid of DNAPL Source Zone at Launch Complex 34 in Cape Canaveral Air Force Station Florida written by and published by . This book was released on 2003 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dense, nonaqueous-phase liquid contaminants are a challenge to characterize and remediate at many sites where such contaminants have entered the aquifer due to past use of disposal practices. Chlorinated solvents are common DNPL contaminates at sites where operations, such as aircraft maintenance, dry cleaning, and metal finishing have historically occurred. In the past, because of the difficulty in identifying the DNAPL source zone, most remediation efforts focused on controlling the migration of the dissolved chlorinated volatile organic compounds plume. Recently, many sites owners have had success in locating DNAPL sources. DNAPL source remediation is beneficial because once the source has been significantly mitigated; the strength and duration of the resulting plume can potentially be lowered. The goal of the project is to evaluate the technical and cost performance of the resistive heating technology for remediation of DNAPL source zones. Resistive heating technology splits conventional three-phase electricity into six electrical phases and delivers it to the subsurface through metal electrodes. In the subsurface, the electrical energy resistively heats the soil and groundwater to generate steam. A combination of direct volatilization and steam stripping drives contaminants to the vadose cone, where a vapor extraction steam collects the steam and contaminant vapors and treats them in an above ground treatment system. The resistive heating demonstration is part of a larger demonstration of three different DNAPL remediation technologies being conducted.
Download or read book Treating Dense Nonaqueous phase Liquids DNAPLs written by Godage B. Wickramanayake and published by . This book was released on 2000 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: - DNAPL Site Characterization- DNAPL Modeling- DNAPL Remediation Technologies- DNAPLs in Fractured Media- Surfactant/Cosolvent Flushing.
Download or read book Dense Non Aqueous Phase Liquids DNAPLs Review of Emerging Characterization and Remediation Technologies written by and published by . This book was released on 2000 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the mounting interest from ITRC member states in addressing DNAPL contaminant problems, ITRC was asked for input on several sampling and analysis plans commissioned by the Interagency DNAPL Consortium (IDC) as part of its DNAPL demonstration project at Cape Canaveral Air Station in Florida. Initially formed in 1999 to review these documents, the ITRC DNAPL Work Team was expanded to address emerging issues in DNAPL characterization and remediation. The team has prepared this technology overview document to summarize recent developments in this field. The purpose of this document is to educate regulators and project managers about the DNAPL problem and to spotlight a selection of emerging characterization and remediation technologies for DNAPLs. Traditionally, sites with DNAPL were often dealt with through a ground water containment strategy whereby the recalcitrant source material and/or the resultant plume of dissolved contaminants are physically contained and monitored over the long term to keep them from migrating further. Emerging in situ technologies are now being developed that actively target these DNAPL sources for elimination or substantial reduction. DNAPL Source Characterization. Because the DNAPL source is targeted, additional characterization efforts, focused in the known or suspected source zone, are often needed to go beyond the conventional techniques typically used to delineate a dissolved plume. In addition to modifications of conventional soil and water sampling methods, innovative field characterization methods may in some cases reasonably provide higher reliability in the detection and quantification of DNAPL. Three general types of emerging DNAPL characterization technologies are presented in this document: geophysical techniques (noninstrusive to minimally intrusive), direct push technologies employing one or a variety of DNAPL screening/sampling devices; and in situ, large-volume chromatography using chemical tracers.
Download or read book Road Map to Understanding Innovative Technology Options for Brownfields Investigation and Cleanup Third Edition September 2001 CD ROM Included written by and published by . This book was released on 2002 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EPA 542 B written by and published by . This book was released on with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Road Map to Understanding Innovative Technology Options for Brownfields Investigation and Cleanup written by États-Unis. Environmental protection agency and published by DIANE Publishing. This book was released on 2001 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Road Map to Understanding Innovative Technology Options for Brownfields Investigation and Cleanup written by and published by . This book was released on 2001 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Documents concernant Clara Tambour vedette de cin ma written by and published by . This book was released on 1894 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Preliminary Study to Determine the Effects of Air Sparging on the Source Zone of Dense Nonaqueous Phase Liquids DNAPLs Using Mass Flux written by Kristen C. Betz and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contaminants in the Subsurface written by National Research Council and published by National Academies Press. This book was released on 2005-04-23 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: At hundreds of thousands of commercial, industrial, and military sites across the country, subsurface materials including groundwater are contaminated with chemical waste. The last decade has seen growing interest in using aggressive source remediation technologies to remove contaminants from the subsurface, but there is limited understanding of (1) the effectiveness of these technologies and (2) the overall effect of mass removal on groundwater quality. This report reviews the suite of technologies available for source remediation and their ability to reach a variety of cleanup goals, from meeting regulatory standards for groundwater to reducing costs. The report proposes elements of a protocol for accomplishing source remediation that should enable project managers to decide whether and how to pursue source remediation at their sites.
Download or read book Natural Remobilization of a Multicomponent Dense Non aqueous Phase Liquid DNAPL Pool microform written by James William Roy and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2004 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dense Nonaqueous Phase Liquids written by Scott G. Huling and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alternatives for Managing the Nation s Complex Contaminated Groundwater Sites written by National Research Council and published by National Academies Press. This book was released on 2013-02-27 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Across the United States, thousands of hazardous waste sites are contaminated with chemicals that prevent the underlying groundwater from meeting drinking water standards. These include Superfund sites and other facilities that handle and dispose of hazardous waste, active and inactive dry cleaners, and leaking underground storage tanks; many are at federal facilities such as military installations. While many sites have been closed over the past 30 years through cleanup programs run by the U.S. Department of Defense, the U.S. EPA, and other state and federal agencies, the remaining caseload is much more difficult to address because the nature of the contamination and subsurface conditions make it difficult to achieve drinking water standards in the affected groundwater. Alternatives for Managing the Nation's Complex Contaminated Groundwater Sites estimates that at least 126,000 sites across the U.S. still have contaminated groundwater, and their closure is expected to cost at least $110 billion to $127 billion. About 10 percent of these sites are considered "complex," meaning restoration is unlikely to be achieved in the next 50 to 100 years due to technological limitations. At sites where contaminant concentrations have plateaued at levels above cleanup goals despite active efforts, the report recommends evaluating whether the sites should transition to long-term management, where risks would be monitored and harmful exposures prevented, but at reduced costs.
Download or read book The Applicability of Dissolved Helium and Neon as Dense Nonaqueous Phase Liquid DNAPL Partitioning Tracers written by Craig Eric Divine and published by . This book was released on 2000 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution of Dense Non aqueous Phase Liquids in the Vadose Zone written by Carol D. Rugge and published by . This book was released on 1992 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ENHANCED MOBILITY OF DENSE NONAQUEOUS PHASE LIQUIDS DNAPLs USING DISSOLVED HUMIC ACIDS written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The specific objectives of this subtask are as follows: Evaluate the suitability of using humic acids to enhance the solubility and mobility of DNAPL contaminants sorbed to soils. Evaluate the toxicity and bioavailablity of the DNAPLs to biodegrading microorganisms. To meet the first objective, the Energy & Environmental Research Center (EERC) evaluated a set of humic acids (two) with different chemical compositions and polarities for the following: Ability of the humates to mobilize/solubilize selected (three) DNAPLs Mobilization/solubilization in batch soil water experiments (one soil) Removal rate via biotreatment with a well-established active microbial culture. The second objective was met by evaluating the inhibiting effects of a leonardite-derived humic acid on active microbial populations.
Download or read book Methods and Techniques for Cleaning up Contaminated Sites written by Michael D. Annable and published by Springer Science & Business Media. This book was released on 2008-01-29 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comprises the presentations made at the NATO Advanced Research Workshop held in Sinaia, Romania 9 – 11 October, 2006. The contributions represent a unique cross section of issues and challenges related to contaminated site management. These range from low cost solutions to petroleum contaminated sites to advances in biological treatment methods. The publication is meant to foster links between groups facing challenges cleaning up contaminated sites.
