Site selection for waste transfer station in Karaj city
Document Type : Research Paper
Authors
1 College Of Agriculture & Natural Resources, University Of Tehran,
2 Environmental science, department, Natural resource faculty, university of Tehran
Abstract
Population growth along with the growth of urban communities has increased consumer demand and waste production. Waste collection and transportation, as the most expensive element in the waste management system, is so important that a slight change in the cost management process will reduce the related costs in the waste management system. Among these, transfer stations, as facilities that reduce the costs of collection and transportation, are of particular importance. The purpose of this study is to select a suitable site for the construction of a waste transfer station and then prioritize suitable options in Karaj. The innovation of this research is in the number of criteria and sub-criteria used for locating and prioritizing options. After setting the major criteria and sub-criteria related to the location of the waste transfer station in this city, their maps were prepared. A total of 3 criteria and 14 sub-criteria were used in this study, then the prepared maps were standardized to a range of [0, 1] and the weight of each criterion and sub-criterion was determined using the pairwise comparison method. The weighted linear combination method was used to prepare the suitability map. The results indicated that the major criteria for transfer station selection were the criteria of boundaries and distances, physical criteria of land, and land use. Then 10 options were selected as the final options and 2 criteria of future development plans and land price were added to the research. Finally, the prioritization of the options was made from the Topsis method and the most suitable option, with an area of more than 4 hectares, was selected in District four of the city. The approach used in this research can be used in other cities as well.
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