Optimal Solid Waste Landfilling Site Selection in Qeydar Using AHP And TOPSIS Models

Increased waste production is one of the main consequences of current urbanization and also the most important factor affecting the environment. Sanitary landfilling is the main waste disposal method in many countries, including Iran. The use of satellite and GIS data for municipal waste landfilling site selection is one of the new and fast landfilling site selection methods.  
The data in this study were collected from relevant organizations and institutions and analyzed and standardized using ArcGIS10.3 software. Afterward, the criteria were weighted using expert opinions and the analytic hierarchy process (AHP) and a binary comparison matrix was formed in Expert Choice software to overlap the layers. Finally, the selected alternatives were ranked using the TOPSIS method.
After ranking the selected alternatives using the TOPSIS method, the best site was selected in the south east of the specified region. The results indicated that the current landfill is located in a suitable place, but it cannot meet solid waste landfilling needs for at least the next 15 years.
Given the problems of the current landfill in Qeydar (the capital of Khodabandeh County, Zanjan Province, Iran) and the growing population of this city, selecting a new landfill in the city is essential.