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Clayey Barrier Systems for Waste Disposal Facilities - J. R. Booker

Clayey Barrier Systems for Waste Disposal Facilities

Paperback Published: 9th January 1997
ISBN: 9780419226000
Number Of Pages: 404
For Ages: 18 years old

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This book deals with the design of "barrier systems" which seperate waste from the surrounding environment, and which are intended to prevent contamination of both groundwater and surface waters. Engineers involved with waste management , geotechnics and landfill design will use the book in order to understand the concepts, find out about the latest developments and subsequently apply them to practical applications relevant to the design of barrier systems. The authors discuss all key aspects of the design of barrier systems, including leachate collection, natural barrier such as clayey aqitars, clay liners, geomembrane and composite liners and so on. They have intergrated the engineering and hydrogeological csiderations an the design of waste disposal facilities to provide a sound base form which engineers can work. There is also a comrehensive view of modelling as related to practical landfill design, and key studies give examples of actual field performance.

Basic concepts
Overview of barrier systems
Transport mechanisms and governing equations
Complicating factors
Modeling the finite mass of contaminant
Modeling a thin permeable layer as a boundary condition
Hand solutions so some simple problems
Design considerations
Impact assessment
Waste and leachate composition
Leachate mounding and collection
Leakage through liners
Leak detection systems
Landfill capping and the control of infiltration
Choic of barrier system and service life considerations
Geotechnical considerations
Clayey barriers: compaction, hydraulic conductivity and clay mineralogy
Methods of assessing hydraulic conductivity
Compaction-permeability relationships
Clay mineralogy
Clay colloid chemistry
Clay-leachate compatibility by measurement of hydraulic conductivity
Soil- MSW leachate compatibility
Compatibility of clays with liquid hydrocarbon permeants
Summary and conclusions
Flow modeling
One-dimensional flow models
Analysis of two-and three-dimensional flow
Finite difference approximation
Application of the finite element method to the analysis of plane flow
Boundary element methods
Chemical transfer by diffusion
Free solution diffusion (Do)
Diffusion through soil
Steady-state diffusion
Transient diffusion
Use of laboratory and field profiles to measure diffusion coefficient De
Diffusion during hydraulic conductivity testing for clay - leachate compatibility
Summary and conclusions
Contaminant transport modeling
Analytical solutions
Application of Laplace transforms to develop a finite layer solution for a single layer
Contaminant transport into a single layer considering a landfill of finite mass and an underlying aquifer
Finite layer analysis
Contaminant migration in a regularly fractured medium
Determination of diffusion and distribution coefficients
Obtaining diffusion and partitioning/distribution coefficients: basic concepts
Example tests for obtaining diffusion and distribution coefficients for inorganic contaminants
Dispersion at low velocities in clayey soils
Effective porosity
Distribution coefficients and nonlinearity
Effect of leachate composition, interaction and temperature
Diffusion and sorption of organic contaminants
Use of field profiles to estimate diffusion coefficients
Summary and conclusions
Field studies of diffusion and hydraulic conductivity
Examples of long-term field diffusion
Examples of short-term diffusion
Hydraulic conductivity of contaminated clay liners
Contaminant migration in intact porous media: analysis and design considerations
Mass of contaminant, the ref erence height of leachate, Hr, and the equivalent height of leachate, Hf
Development of a contaminant plume
Effect of base velocity
Effect of horizontal dispersivity in an underlying aquifer
Effect of thickness of an aquifier beneath the barrier
Effect of landfill size on potential impact
1 1/2-D versus 2-D analysis and modeling of the aquifer beneath a liner
Effect of sorption
Effect of liner thickness
Effect of Darcy velocity in the barrier and design for negligible impact
Migration in fractured media: analysis and design considerations
Numerical considerations
Lateral migration through fractured media
Vertical migration through fractured media and into an underlying aquifer
Integration of hydrogeology and engineering in the design of barriers and assessment of impact
Hydraulic conductivity of aquitards
Some considerations in the design of highly engineered systems
Effect of an engineered facility on groundwater levels (shadow effect)
Service life of co
Table of Contents provided by Publisher. All Rights Reserved.

ISBN: 9780419226000
ISBN-10: 0419226001
Audience: Tertiary; University or College
For Ages: 18 years old
Format: Paperback
Language: English
Number Of Pages: 404
Published: 9th January 1997
Publisher: SPON
Country of Publication: GB
Dimensions (cm): 23.5 x 18.42  x 1.91
Weight (kg): 0.72
Edition Number: 1