Abstract
Selecting a landfill site is a difficult task because the process depends on many factors and restrictions. Landfill is an optimal solution for the disposal of solid waste in Al-Musayiab Qadhaa, which is located in the northern part of Babylon Governorate. At the moment, there is no landfill site in that area that follows the scientific selection site criteria. For this reason, in this research, fifteen variables were considered (groundwater depth, rivers, soil types; agriculture lands use, land use, elevation, slope, gas pipelines, oil pipelines, power lines, roads, railways, urban centers, villages and archeological sites) using geographic information system (GIS) to find out the best suitable landfill site. In addition, two methods of multi-criteria decision-making were used to derive weights for criterion’s maps on GIS to obtain potential landfill sites. The first method is analytical hierarchy process (AHP) which was used to identify the weight for each criterion from the matrix of pairwise comparisons. The second method was the simple additive weighting (SAW) which is a simple method to solve the problem of the selection landfill sites. After comparison of the results obtained based on combining two final maps resulted from methods of AHP and SAW using GIS environment to determine the pixels percentage of matching and non-matching for two maps, two suitable candidate landfill sites were identified that satisfy the requirements with an area of 7.965–5.952 km2. Area of these sites can accommodate the solid waste generated from the Qadhaa up to 2030.
Highlights
In developing countries, choosing an appropriate sanitary site for landfill to get rid of solid waste is the most costeffective system for most urban areas
Landfill is an optimal solution for the disposal of solid waste in Al-Musayiab Qadhaa, which is located in the northern part of Babylon Governorate
This study focuses on selecting suitable candidate sites for landfills through inserting multi-criteria in geographic information system (GIS) for AlMusayiab Qadhaa in Babylon Governorate, Iraq, using analytical hierarchy process (AHP) and simple additive weighting (SAW)
Summary
In developing countries, choosing an appropriate sanitary site for landfill to get rid of solid waste is the most costeffective system for most urban areas. Such a decision needs extensive process for the evaluation of the lands in order to determine the proper place for disposal of solid waste optimally. This site must conform to environmental and scientific requirements and governmental regulations in any country.
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