Landfill site selection by using geographic information systems

Abstract

, 114 pages One of the serious and growing potential problems in most large urban areas is the shortage of land for waste disposal. Although there are some efforts to reduce and recover the waste, disposal in landfills is still the most common method for waste destination. An inappropriate landfill site may have negative environmental, economic and ecological impacts. Therefore, it should be selected carefully by considering both regulations and constraints on other sources. In this study, candidate sites for an appropriate landfill area in the vicinity of Ankara are determined by using the integration of Geographic Information Systems and Multicriteria Decision Analysis. For this purpose, sixteen input map layers including topography, settlements (urban centers and villages), roads (Highway E90 and village roads), railways, airport, wetlands, infrastructures (pipelines and power lines), slope, geology, land use, floodplains, aquifers and surface water are prepared and two different MCDA methods (Simple Additive Weighting and Analytic Hierarchy Process) are implemented in GIS environment. Comparison of the maps produced by these two different methods shows that both methods yield conformable results. Field checks also confirm that the candidate sites agree well with the selected criteria.

Challenges in Selecting a Sustainable Landfill Site in Malaysia

“…The geology of an area will directly control the types of soil created from the parent material, load bearing capacity of the landfill's foundation soil, and the mitigation of leachate [10]. A good landfill site is the one that can reduce the need in of doing serface earthworks.…”

“…An appropriate site has to be environmental friendly, acceptable by the public and the least cost that require in managing wastes. There are tipping fees to be charged from the imported waste [10]. Thus, a simpler way in selecting a landfill site has to be identified so as to increase the accuracy of the end result.…”

“…The easy accessible of the waste vehicles will enable emergency helps in case of accidents happan on site [17]. On the other hand, the distance of the municipal solid wastes generation and landfill site will affect the transport cost directly [10]. Post closure land use plan It is essential for the authority to plan for the post closure land use for the landfill site before a land is gazetted for landfill use.…”

Al-Mseiab Qadaa Landfill Site Selection Using GIS and Multicriteria Decision Analysis

“…Assigning weights of importance to evaluation criteria accounts for 1) the changes in the range of variation for each evaluation criterion, and 2) the different degrees of importance being attached to these ranges of variation. There are four different techniques when assigning the weights: Ranking, Rating, Pairwise Comparison and Trade of Analysis Method [26].…”

“…Number of criteria had been proposed for landfill sitting [4]- [14]. Several techniques can be found for site selection of solid waste disposal in Halvadakis [15]; Bonham-Carter [16]; Ehleret, et al [17]; Balis, et al [18]; Dorhofer and Siebert [19]; Yagoub and Buyong [20]; Herzog [21]; Lukasheh, et al [22]; Kontos, et al [23]; Kontos, et al [24]; Simşek, et al [25]; Şener, et al [26]; Banar, et al [27]; Gemitzi, et al [28]; Mutlutürk, et al [29]; Nas, et al [30].…”