Title: Sequential methodology for the selection of sanitary landfill sites: a comparison with a traditional method

Authors: Giulia G. Mazzuco; Natália C. Souza; Vinícius G. Oliveira; Caio A.R. Gobbo; Emerson R. Moreira; José A. Lollo; Reinaldo Lorandi; Luiz E. Moschini

Addresses: Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil ' Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil ' Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil ' Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil ' Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil ' Department of Civil Engineering, São Paulo State University, Ilha Solteira, Brazil and Federal University of São Carlos, São Carlos, Brazil ' Department of Civil Engineering, Federal University of São Carlos, São Carlos, Brazil ' Department of Environmental Sciences, Federal University of São Carlos, São Carlos, Brazil

Abstract: A sequential methodological approach for sanitary landfill sites selection is proposed. Spatial data were processed in a GIS platform using multi-criteria decision analysis (analytic hierarchy process, boolean, fuzzy, and weighted sum). A traditional weighted sum method was compared to the sequential method proposed herein. Using weighted sum, 57.98% of the area results propitious versus 8.98% using the sequential method. Strong variation also occurs in the areas classified as restrictive, which increases from 0.60% to 26.01%. Most significant differences occurred in urban areas neighbouring and areas high slope areas with rocky outcropping substrate (strong restriction to sanitary landfills implantation). Once traditional method results average classes, areas with strong restriction for one attribute can be selected. In sequential method, the overlapping of the environmental, legal and operational attributes results more consistent classification, more conservative socioenvironmental evaluation, reducing environmental impacts mitigation needs and decreasing the management risks and general enterprise costs.

Keywords: sanitary landfill; sequential methodological; weighted sum; multi-criteria analysis; analytic hierarchy process; geographic information system; sites selection; method comparison; hydrographic basin; Rio Claro hydrographic basin; environment and waste management.

DOI: 10.1504/IJEWM.2020.105347

International Journal of Environment and Waste Management, 2020 Vol.25 No.2, pp.141 - 158

Received: 02 Mar 2018
Accepted: 29 Dec 2018
Published online: 25 Feb 2020 *

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