Evaluation of Solid Wate Landfill Potential Site Using Gis Based Multi Criteria Evaluation Method: A Case Study of Addis Ababa
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Date
2015-06
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Addis Ababa University
Abstract
Solid waste management system is the most difficult task that many countries, both developing
and developed, are facing. In Addis Ababa, the last two decades of development activities, such as construction of roads and other buildings are established. As a result of development activities together with fast population growth, larger amounts of household, street, institutional and industrial solid wastes are generated and the city is facing problem in their improper disposal. Landfill is a common solution for the final disposal of Municipal Solid Waste (MSW) in Addis Ababa, but it is an extremely difficult task to accomplish because the site selection process depends on different factors and regulations. Appropriate landfill site is a systematic manner for solid waste management. Since unsuccessful landfill siting brought negative effect in both public health and the environment it raises strong public opposition. In this study, selected sites for an appropriate landfill area in Addis Ababa City are determined by using the integration of Geographic Information Systems (GIS) with Multi-Criteria Evaluation (MCE) and Remote sensing (RS) technology. Arc GIS software was used as a tool since it is able to perform suitability analysis using MCE analysis. To identify appropriate landfill areas in Addis Ababa region, 11 input map layers including ground water depth, borehole , surface water, airport, fault, road network ( to set this criteria the new rail way lines were taken under consideration), distance from residential areas, land use/land cover, permeability of soil and land slope were used. A final map was generated which identifies regions showing suitability for the location of the landfill site. The finding of this study shows that 8.1% of the study area is most suitable, 0.9% is suitable, 13.7% is moderately suitable, 66.4% is poorly suitable and 10.9% is Unsuitable. At the end of the analyses, thirteen (13) selected sites are determined. Among all ,the most preferable solid waste landfill site located in the eastern part at Bole sub-city woreda10 its local place is called" Bole Arabssa
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Geography and Environmental Studies