A Multi-objective Model for Location of Transfer Stations: Case Study in Waste Management System of Tehran

This paper presents a multi-objective optimization model for the design of a waste management system consisting of customers, transfer stations, landfills and collection vehicles. The developed model aims to simultaneously minimize the total costs, greenhouse gas emissions and the rates of energy consumption. To tackle the multiple objectives in the problem, an interactive fuzzy programming solution approach is utilized. The model is capable of determining the location and allocation of transfer stations as well as the selection of the waste processing technologies. The proposed model is applied to a case problem where real data is used for long-term planning of solid waste of Tehran city.