Evaluation and optimization of the collection and transportation system of solid waste management in Zanjan with GIS application

Devoting the most portion of expenditures of the solid waste management on the one hand, and the necessity of operation exploiting of this system with decreasing the spent time on the other hand have propound the optimization of solid waste collection and transportation system as a principle in designing and management With regard to performance of present solid waste collection and transportation system in Zanjan and lack of suitable organization, it is necessary to evaluate the advantages and disadvantages of the system with mathematical relations and GIS, afterwards, with regard to urban structure and tonnage of the produced solid waste, the most optimized management system must be presented. In this research karmandan town in the city of Zangan was chose as the pilot. Time data of the solid waste collection and transportation stages in the present routes of collection in karmandan the district of Zanjan was gathered within 10 minutes using two digital chronometers and was analyzed by mathematical relations, excel software and GIS. Thereafter, depending on this information such as density,