Site locating landfill in Hashtgerd area by using Analytical Hierarchy Process(AHP) and Geographic Information System (GIS)

Finding a suitable location for the landfill site selection is one of the most important aspects. Municipal solid waste management is one of the aim of geomorphology with regard to its nature as a source of developed land forms, processes for their formation or composition of the material is relevant in environment and plays an important role in location. Hashtgerd area with an extent of 398 square kilometers, that is in the south of the Savojbolagh city which is located in Alborz province. In this region due to the placement of permanent rivers on alluvial fans (Kordan), also and land with high permeability, Existence of some surface water and underground water layer at shallow depths (less than 50 m), High population areas (urban and rural) and abundant agricultural land, Identifying suitable landfill areas so that it does not damage the surrounding environment has great importance and necessity. The research aim is Finding locate for Landfill in Hashtgerd area by using Analytical Hierarchy Proces (AHP) and Geographic Information System (GIS) and it is concerning geomorphic parameters. Research method is analytical – analogycal. In order to optimize the location of a landfill in the area of Hashtgerd, Statistics and data about groundwater 16 piezometers wells geological and hydrological land use data and topologies of digital geological maps (1: 100,000) with a scale of topographic maps (1: 25000), Results was obtained through Analytical Hierarchy Process (AHP) and in the Arc GIS software suitable areas for waste identification, designation, were introduced and zoned. Research results show that suitable regions for landfill have the lowest area. The most suitable area for the landfill is to eastern region graveside of the Mohammadabad Afshar village and south region is inappropriate for landfill.