Abstract
The demographic growth in the circle of Ben Ahmed leads to a large production of household waste. This waste is disposed of in uncontrolled open-air landfills. The informal discharge of this waste leads to negative impacts on the environment and on human health. To remedy these effects, this work aims to locate suitable locations for a sanitary landfill. The Analytical Hierarchy Process (AHP), a multi-criteria approach, and the Geographic Information System (GIS) were used. Following a thorough study, nine criteria were taken into account; distance to groundwater, water bodies, roads, highways, settlements, forests, land use map, elevation, and slope. Suitable sites have been identified to assist managers and officials in selecting a good location for a legal landfill.
Highlights
Solid waste management is a common problem, and the use of landfills is the most common method
The second important step of the Analytical Hierarchy Process (AHP) is the calculating of weights (Table 3), a consistency check of the peer comparison matrix is required [9]. this verification is done by a calculation of several indices via mathematical formulas: the consistency index (CI), the random index (RI), and the consistency ratio (CR)
The siting of a sanitary landfill must be subject to an evaluation process of criteria to prevent any long-term negative impact on the environment and human health, such as leachate’s contamination of groundwater, surface water, and soil, besides pollution of air caused by odours or fumes
Summary
Solid waste management is a common problem, and the use of landfills is the most common method. The circle is composed of 20 communes that generate 102.2 tons/day of waste (Table 1) [1]. This waste is collected in uncontrolled landfills. The present work aims at proposing suitable sites for the installation of controlled landfills to ensure good management of household solid waste and to minimize their negative impacts on the environment and public health[2], [3]. Combined with a GIS geographic information system to establish a geographic database to extract a final map representing suitable sites for a controlled legal landfill [4]–[6]
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