Abstract
In Brazil, the disposal of construction and demolition waste (CDW) quite often occurs in inadequate places, resulting in social, economic, and environmental problems. This reflects the need for selecting appropriate areas for the disposal of this type of waste. These areas must follow local standards and regulations to protect human health and the environment. Considering that, this study is intended to indicate potentially suitable areas for CDW landfill deployment, known as Class A landfill in Brazil, supported by a GIS-MCDA based model. The GIS-MCDA technique, used as a basic tool to identify potentially suitable areas, has several advantages, such as low cost, reduced spatial data subjectivity, and fast decision-making process. The place chosen for this study is the Urban Central Core of the Metropolitan Area of Curitiba. By integrating GIS with MCDA techniques in this research study, it was possible to indicate potentially suitable areas for CDW disposal in this region.
Highlights
The illegal disposal of construction and demolition waste in Brazil is considered a matter of public concern and may result in several disadvantages for society as a whole, such as high costs for public drainage and health systems, because waste sedimentation may increase the chances of flooding, contributing to soil and surface water contamination and obstruction of urban drainage systems (Ferreira and Pinto, 2010; Pinheiro et al, 2019)
Construction and demolition waste (CDW) in Brazil is deployed as construction and inert waste in landfills (ABNT, 2004)
Research development was supported by the following Multi-Criteria Decision Analysis (MCDA) techniques: Delphi, Boolean, Analytical Hierarchy Process (AHP), and weighted linear combination to analyze criteria related to the spatial problem
Summary
The illegal disposal of construction and demolition waste in Brazil is considered a matter of public concern and may result in several disadvantages for society as a whole, such as high costs for public drainage and health systems, because waste sedimentation may increase the chances of flooding, contributing to soil and surface water contamination and obstruction of urban drainage systems (Ferreira and Pinto, 2010; Pinheiro et al, 2019). Site selection requires the collection and processing of a wide range of information on environmental aspects, socioeconomic status, and operational location. It should consider the interaction between planning and waste management (Geneletti, 2010). The criteria established and used to indicate potentially suitable sites for landfill construction need to be technically defined and analyzed. This is a complex process because its evaluation requires time devoted by the parties involved. It is an expensive decision-making process since it involves different criteria for site selection (Rikalovic et al, 2014)
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