Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 76

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Author:
Publisher: DIANE Publishing
ISBN: 1428903631
Category :
Languages : en
Pages : 38

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Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 98

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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309049946
Category : Science
Languages : en
Pages : 334

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Book Description
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.

Author:
Publisher:
ISBN:
Category : Sewage
Languages : en
Pages : 378

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"This manual contains overview information on treatment technologies, installation practices, and past performance."--Introduction.

Author: United States. Environmental Protection Agency. Office of Solid Waste and Emergency Response
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 29

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 489

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A 1995 Department of Defense (DoD) Inspector General report indicates that the cumulative operating and maintenance (O & M) costs for 75 pump and treat systems operating at DoD chlorinated solvent groundwater sites (a subset of over 200 DoD pump and treat sites) was $40 million in fiscal year (FY) 1996. The report also projected that these costs would reach St billion by the year 2000. Recent studies completed by the EPA and the Navy indicate that the majority of pump and treat systems are not operating as designed, have unachievable or undefined goals, and have not been optimized since installation. Even under ideal circumstances, (i.e. when the initial pump and treat system has been appropriately designed with clearly-defined objectives), changes in contaminant distributions and aquifer stresses, coupled with evolving regulatory climates. result in the need for system optimization. Although it is recognized that many of these pump and treat systems are ineffective for cleanup, regulations require that they continue to operate until a more effective solution is developed. In the interim the potential for tremendous cost savings exists with the application of simple screening tools and optimization- simulation modeling. The optimization- simulation models link mathematical at optimization techniques with simulations of groundwater flow and/or solute transport, to determine the best combination of well locations and pumping rates.

Author: Arun R. Gavaskar
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 198

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Book Description
Because of the limitations of conventional pump-and-treat systems in treating groundwater contaminants, permeable barriers are potentially more cost-effective than pump-and-treat systems for treating dissolved chlorinated solvent plumes, which may persist in the saturated zone for several decades. Other contaminants, such as chromium or other soluble heavy metals, can also be treated with this technology. Permeable Barriers for Groundwater Remediation discusses the types of permeable barriers, their design and construction, and how they can be monitored to evaluate compliance. It provides practical guidance on reactive media selection, treatability testing, hydrogeologic and geochemical modeling, and innovative installation techniques for the evaluation and application of this promising new technology. The types of permeable barriers discussed include: trench-type and caisson-based reactive cells; innovative emplacements, such as horizontal trenching and jetting; and continuous reactive barriers versus funnel-and-gate systems.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
A 1995 Department of Defense (DOD) Inspector General report indicates that the cumulative operating and maintenance (O & M) costs for 75 pump and treat systems operating at DoD chlorinated solvent groundwater sites (a subset of over 200 DoD pump and treat sites) was $40 million in fiscal year (FY) 1996. The report also projected that these costs would reach $1 billion by the year 2020. Recent studies completed by the EPA and the Navy indicate that the majority of pump and treat systems are not operating as designed have unachievable or undefined goals and have not been optimized since installation. Even under ideal circumstances, (i.e. when the initial pump and treat system has been appropriately designed with clearly-defined objectives), changes in contaminant distributions and aquifer stresses, coupled with evolving regulatory climates, result in the need for system optimization. Although it is recognized that many of these pump and treat systems are ineffective for cleanup regulations require that they continue to operate until a more effective solution is developed. In the interim the potential for tremendous cost savings exists with the application of simple screening tools and optimization- simulation modeling. The optimization- simulation models link mathematical at optimization techniques with simulations of groundwater flow and/or solute transport to determine the best combination of well locations and pumping rates.

Author: United States. Environmental Protection Agency
Publisher:
ISBN:
Category : Environmental protection
Languages : en
Pages : 516

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Book Description