Application of PSO and PROMETHEE Methods in Location allocation of solid waste recycling site in Karaj city

One of the Major and complicated problems of human that is the result of non-logical activity and consumption is production of solid disposals in various qualities and amounts. But there is a need of modern management systems for solving these problems and its adverse hygienic and environmental effects. Recycling is one of the sustainable solutions in solid waste management. However, recycling has environmental and economic benefits. Finding the best location for waste recycling is very important for the proper implementation of operations, which irreparable damage will be entered into the scheme by inaccurate study. The aim of this study is to provide a framework for decision making techniques and PSO using geographic information systems (GIS), to identify potential sites for establishing waste recycling station in Karaj, Iran. This study led to identification of 20 effective criteria in locating recycling station and also determining the allowable boundaries. Five areas were identified as prone recycling stations using PSO method. Finally, two of the five regions were selected as the optimal locations of recycling stations using PROMETHEE method.