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Academics > Undergraduate Degree Programs > College of Engineering > COE Department > Civil Engineering > Senior Design Projects List > Disposal of Contaminated Construction and Demolition Debris and Hazardous Waste in Clayey Soil
Disposal of Contaminated Construction and Demolition Debris and Hazardous Waste in Clayey Soil

Project Overview

This project examines the design of a landfill on clayey soil for storing construction and demolition debris (C & D) and hazardous waste. The best practices in reducing C & D waste is to opt for recycling or reusing these solid waste products. However, in many cases these solid wastes can be contaminated by some chemical elements harmful to the human health and environment. This is also applicable for the case of hazardous wastes as they cannot be recycled. Thus, ground disposal using landfills is imperative in this case and could be one of the best solutions. This kind of disposal (i.e. using landfill) indicates how important the humans can improve the environmental quality of any region by disposing the waste in a safely and correct way. This project includes a geotechnical and geo-environmental design of a landfill for the disposal of contaminated waste in clayey soil. The site of the project will be located in the southern region of the Kingdom of Saudi Arabia.
The main objective of this project is to carry out a geotechnical and geo-environmental design of a landfill destined for the disposal of contaminated construction and demolition debris, and hazardous waste. The stratigraphy of the site of the project is composed mainly of clayey soil where the landfill will be founded.

Project Objectives

The main objective of this project is to carry out a geotechnical and geo-environmental design of a landfill destined for the disposal of contaminated construction and demolition debris, and hazardous waste. The stratigraphy of the site of the project is composed mainly of clayey soil where the landfill will be founded. The design steps include the following:

The project is composed by the following stages or parts:
  1. Analyzing the different components of the site of the project.
  2. Determining the maximum height of the landfill by verifying the following two principles:
    1. Bearing capacity of the soil foundation, and
    2. Settlement of the landfill on the clayey soil.
  3. Assessment of the slope stability of the excavated area which will accommodate the landfill.
  4. Determining the minimum depth of the clay strata which should be adopted, during the    ground excavation, to prevent the swelling of the clay layer caused by the hydrostatic water pressure.
  5. Determining the rate of percolation of contaminated liquids contaminant through the ground layer located beneath the designed landfill.
  6. Designing a permanent drainage system beneath the base of the landfill to prevent the raise of groundwater table.
  7. Proposing and analyzing the different landfill accessories that are required for the disposal of hazardous waste such as drainage System, flexible membrane liners, multiple cover layers of different types, etc.)



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