Gis−Based Solid Waste Landfill Site Selection in Dukem Municipality, Ethiopia
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Date
2015-06-01
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Addis Ababa University
Abstract
One of the growing potential problems of increased consumption is an escalation in the quantities of municipal solid wastes produced. Land filling is now accepted as the most widely used method for environmentally safe disposal of solid waste. However, appropriate site selection for waste disposal is one of the major problems in waste management. Selection of suitable landfills can be extremely complex mainly due to the fact that the selection process involves many factors, criteria and regulations. In this study, attempts have been made to determine sites that are suitable for landfill siting in the Dukem municipalities. Geographical Information System (GIS) based methodology was applied in order to identify and select potential suitable sites. Suitability classes for landfill site are categorized into four classes with their respective area coverage are unsuitable/restricted area (8.8 km2), less suitable (3 km2), moderately suitable (21 km2) and highly suitable area (3 km2). Most of the highly suitable landfill sites were identified in the southern and northern part of the study area. For this purpose, different criteria were used in relation to landfill site selection. The initial step of the methodology comprises a GIS based operation and analysis that exclude all areas unsuitable for any waste disposal facility. Criteria were mapped using the GIS technique and spatial analytic tools, then different factor map layers were overlaid to obtain a potential suitability map. The final map produced show areas that are suitable for landfill siting.
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Keywords
Landfill, GIS, Remote Sensing, Municipal Solid Wastes, Suitability