[PDF] Dyntrack A Three Dimensional Contaminant Transport Model For Groundwater Studies eBook

Author : Mark Goltz
Publisher : John Wiley & Sons
Page : 270 pages
File Size : 31,13 MB
Release : 2017-02-08
Category : Science
ISBN : 1119300274

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Teaches, using simple analytical models how physical, chemical, and biological processes in the subsurface affect contaminant transport Uses simple analytical models to demonstrate the impact of subsurface processes on the fate and transport of groundwater contaminants Includes downloadable modeling tool that provides easily understood graphical output for over thirty models Modeling tool and book are integrated to facilitate reader understanding Collects analytical solutions from many sources into a single volume and, for the interested reader, shows how these solutions are derived from the governing model equations

Author : Donald L. Wise
Publisher : CRC Press
Page : 918 pages
File Size : 17,13 MB
Release : 2000-06-09
Category : Science
ISBN : 1482270234

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This volume focuses on innovative bioremediation techniques and applications for the cleanup of contaminated media and sites. It includes quantitative and design methods that elucidate the relationships among various operational parameters, and waste chemistry that defines the cost effectiveness of bioremediation projects. It also presents numerica

Author : Tariq O. Hashim
Publisher :
Page : 124 pages
File Size : 18,15 MB
Release : 1998-12-01
Category : Finite element method
ISBN : 9781423555179

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Macroscale rate-limited sorption modeling was tested using a production transport code, the GMS/FEMWATER ground-water modeling package. The code (Version 1.1 of FEMWATER. dated 1 August 1995) was applied to a 3D conceptual model developed from a field site at Dover AFB, DE. A simulation was performed of a 200 hour contaminant injection pulse followed by clean water flushing. A moment analysis performed on the resulting breakthrough curve validated code self-consistency. Another injection pulse simulation showed that retardation temporally delays the breakthrough peak. Transport simulations of pulsed clean water pumping of the test cell with a prescribed initial contaminant distribution demonstrated both tailing and rebound without any additional microscale modeling. In comparison with both previous numerical solutions and the actual field data from the Dover AFB test site, FEMWATER has demonstrated high numerical dispersivity. For an initial contaminant distribution corresponding to the field data, the FEMWATER breakthrough curve was much flatter than the experimental result, failing to capture the plug-like elution of the field site.

Author : Rao Y. Surampalli
Publisher : ASCE Publications
Page : 256 pages
File Size : 19,25 MB
Release : 2004-01-01
Category : Technology & Engineering
ISBN : 9780784475522

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Sponsored by the Natural Attenuation Task Committee of the Environmental and Multi-Media Council of the Environmental and Water Resources Institute of ASCE. This report provides the regulatory framework, scientific and engineering principles, and applications of natural attenuation for the remediation of contaminated sites. Natural attenuation is a process that relies on the natural assimilative capacity of a site to reduce or stabilize contaminates to desirable levels. It is becoming an increasingly popular, cost-effective remedial alternative for many contaminated sites. The report describes in detail sites contaminated with petroleum hydrocarbons and MTBE, chlorinated solvents, polycyclic aromatic hydrocarbons, metals, and radioactive wastes. Topics include: Ømajor pollutants; Øextensive review of literature; Øexamples of applications of natural attenuation; Øsite characterization and monitoring requirements and procedures; and Øbasic scientific principles on physical, chemical, and biological processes. Environmental engineers and scientists will find this book full of information on basic principles to summaries of natural attenuation applications.