Document Type : Research paper
Department of Environment, Parand Branch, Islamic Azad University, Parand, Iran
Department of Environment, Damavand Branch,Islamic Azad Univercity, Damavand, Iran
Department of Health, Safety and Environmental Management, West Tehran Branch, Islamic Azad University, Tehran, Iran
Urban waste management has always been one of the problems of urban planners and its management in a principled and environmental manner is one of the most important issues in urban management. The purpose of the present study is to resolve the dilemmas related to municipal waste management in Karaj and to transform the threat of municipal waste into an opportunity to generate energy and convert waste into useful products. This study was designed and implemented in 5 steps. Firstly, the literature review and performance indicators were identified and then evaluated by a group of experts in the Delphi panel. Ranked from hierarchical literature and technique, the next step was to classify the waste disposal methods with the TOPSIS technique. Economic criterion with normal weight of 0.434 in priority, social criterion with normal weight of 0.295 in second priority and environmental criterion with normal weight of 0.271 is in third priority. Also, the inconsistency rate of the comparisons is 0.006. Finally, the best technology, landfill technology with 0.567 points, compost technology with 0.557 points, biogas with 0.519 points, waste incinerator with 0.337 points, gas fuel with 0.438 points and RDF with 0.428 points are ranked first to sixth, respectively. It can be concluded that the Landfill is the best option and economy is the most important criterion with the sub-criterion of construction cost
- Constructing a sustainable evaluation index system from multiple dimensionsand Selection of the most appropriate waste disposal method to energy technologies is performed.
- Articulating evaluation criteria by mathematical models and Proposing a weighting model to improve efficiency and handle correlations among criteria respectively : Economic>Social> Environmental criterion based on AHP and ANP.
- TOPSIS technique with Entropy weighted method is applied and Introduced to rank Waste Disposal Methods : landfill was the best and RDF was the lowest score.
- Providing managerial insights for investors and the government to manage solid waste.