1st Edition

Sanitary Landfill Leachate Generation, Control and Treatment

By Syed R. Qasim, Walter Chiang Copyright 1994
    352 Pages
    by CRC Press

    352 Pages
    by CRC Press


    Sanitary landfills are the most widely utilized method of solid waste disposal around the world. With increased use and public awareness of this method of disposal, there is much concern with respect to the pollution potential of the landfill leachate. Depending on the composition and extent of decomposition of the refuse and hydrological factors, the leachate may become highly contaminated. As leachate migrates away from a landfill, it may cause serious pollution to the groundwater aquifer as well as adjacent surface waters. There is growing concern about surface and groundwater pollution from leachate. Better understanding and prediction of leachate generation, containment, and treatment are needed.
    This book contains a literature review of various methodologies that have been developed for prediction, generation, characterization, containment, control, and treatment of leachate from sanitary landfills. The contents of this book are divided into nine chapters. Each chapter contains theory and definition of the important design parameters, literature review, example calculations, and references.
    Chapter 1 is devoted to basic facts of solid waste problems current status and future trends towards waste reduction and recycling. Chapter 2 provides a general overview of municipal solid waste generation, collection, transport, resource recovery and reuse, and disposal options. The current status of sanitary landfill design and operation, problems associated with the landfilling, and future trends are presented in Chapter 3. Methods of enhanced stabilization, recycling landfill space, methane recovery, and above grade landfilling, and closure and post closure care of completed landfills are also discussed in detail. Chapter 4 provides a general overview of Subtitle D regulations and its impact upon sanitary landfilling practices. Chapter 5 is devoted entirely to moisture routing and leachate generation mechanisms. Examples of calculation procedure for determining the leachate quantity produced at a landfill are presented. Chapter 6 is devoted to chemical characterization of leachate that changes over the life of the fill. Both theoretical and experimental results are provided to estimate the leachate quality. Chapter 7 provides leachate attenuation processes and mechanisms. Chapter 8 is devoted to leachate collection systems. Natural soil sealants, admixed materials and synthetic membranes, their effectiveness, and methods of installation and economics are fully discussed. Chapter 9 provides a detailed review of leachate treatment methodology. Kinetic coefficients and treatment plant design considerations are summarized for the sole purpose of assisting con- sultants to design leachate treatment facilities. Leachate treatment case histories and numerous process trains are presented for treating leachate from young landfill. The book also describes how the process train can be changed effectively as leachate quality changes with time.

    Integrated Solid Waste Management
    Recycling and Waste Reduction
    Energy Recovery and Waste Reduction
    Landfilling and Leachate Control
    Future Trends

    Solid Waste Management Practices-An Overview
    Municipal Solid Wastes Quantities
    Other Solid Waste Sources
    Hazardous Wastes
    Municipal Solid Waste Management

    Sanitary Landfill Planning, Design and Operation
    Site Selection
    Soil and Geology
    Site Preparation and Development
    Methods of Landfilling and Operation
    Environmental Concerns
    Sanitary Landfill Design Considerations
    Landfill Stabilization Techniques
    Recycling Landfill Space
    Closure and Post-Closure Care
    Example of a Modern Landfill

    Subtitle D Regulations and Their Impacts
    Solid and Hazardous Waste Legislation
    Effects of Subtitle D on Municipal Solid Waste Landfills

    Moisture Routing and Leachate Generation
    Solid Waste Decomposition in a Sanitary Landfill
    Leachate Generation from Sanitary Landfills
    Field Application

    Characterization of Landfill Leachate
    Factors Affecting Leachate Quality
    Experimental Work
    Leachate Modeling
    Leachate Quality
    Toxicity of Municipal Landfill Leachate

    Leachate Attenuation
    Attenuation Process
    Attenuation Mechanisms
    Leachate Migration Prediction and Modeling

    Leachate Containment and Collection
    Types of Impervious Liners
    Liner Selection and Performance
    Liner Construction and Installation
    Leachate Collection and Removal System
    Costs of Leachate Collection System

    Leachate Treatment
    Leachate Treatment Problems
    Review of Applicable Wastewater TreatmentProcesses
    Treatment Processes Applied to Leachate Treatment
    Selection of an Effective Leachate Treatment Train
    Leachate Treatment Costs


    Qasim, Syed R.