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

Subject Areas : Water and Environment

Azadeh medhat ¹ ( Dept. of Environment, Faculty of Enviroment, Islamic Azad Univercity, Sience & Research Branch & Energy. )
Masood Monavvari ² ( Dept. of Environment, Faculty of Enviromenta and Energy , Sience & Research Branch ,Islamic Azad Univercity )
Amir Hossein Javid ³ ( Dept. of Environment, Faculty of Enviroment& Energy, Sience & Research Branch, Islamic Azad Univercity )
Akbar Eslami ⁴ ( Dept. of Environment Health, Facaulty of Health, Zanjan University of Medical Sciences )
Mohsen Ahad negad ⁵ ( Faculty of Geography and Civil Planning, Zanjan University. )

Received: 2008-02-09 Accepted : 2008-05-09 Published : 2011-03-21

Keywords: Collection Solid waste system, GIS, Zanjan ْ,

Abstract :

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, population and the capacity of garbage production in present routes and using mathematical relation and GIS. Optimized system of solid waste was calculated and designed. The results of time evaluation of the present management system shows that the whole spent time for solid waste collection and transportation Karmandan town by garbage trucks takes 2 hours, 55 minutes  and 42 seconds and the mean time of the trucks round trip per ton of solid waste  In each journey is 11 minutes and 44 seconds. Considering locating of storages and assigning the optimized routs, solid waste collection system was calculated and designed using mathematical relation and GIS.  . In this research designing solid waste collection system of karmandan town was also carried out and 60 containers with the capacity of 550 and 660 liters were located in the town. With designing optimized routs by GIS and trial and error method, there   tracks including a reserved truck were calculated and recommended to collect the solid waste of   karmandan town.

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