Hazardous waste landfill site selection in Western Ghana: An integration of multi-criteria decision analysis and geographic information system

作     者：Stemn, Eric Kumi-Boateng, Bernard 

作者机构：Univ Queensland Sustainable Minerals Inst Brisbane Qld 4072 Australia Univ Mines & Technol Environm & Safety Engn Dept Tarkwa Ghana Univ Mines & Technol Geomat Engn Dept Tarkwa Ghana 

出 版 物：《WASTE MANAGEMENT & RESEARCH》 (废物管理与研究)

年 卷 期：2019年第37卷第7期

页      面：723-736页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：We extend our gratitude to all the experts whose time  resources and knowledge were valuable to the success of the study. We equally thank all the organisations who provided data for the study. The authors received no financial support for the research  authorship  and/or publication of this article 

主　　题：Hazardous waste selection criteria multi-criteria decision analysis landfill suitability index hierarchy model 

摘      要：Most cities in developing countries are fast industrialising, leading to an increased hazardous waste generation. Though disposal occupies the bottom of the waste management hierarchy, it is an important component of the waste management chain, requiring greater focus to mitigate its environmental and human health effects. The selection of a hazardous waste landfill site is a complex decision-making process since it requires the consideration of several laws and regulations and the integration of various data. This study presents a multi-criteria decision analysis for selecting hazardous waste landfill sites in Western Ghana. Thirty-two evaluation criteria arranged according to four hierarchy levels were selected for the study. The selected criteria considered geo-environmental, economic and social factors. Twenty-one intermediate suitability maps were created, which were then aggregated to produce a composite landfill suitability map of the study area. To narrow down the search for space for landfill sites, optimality criteria were applied on the composite suitable map to select the best locations for landfill. The application of the optimality criteria led to the selection of 5% of the study area as optimal for landfill sites. However, the final decision for landfill site selection will require further in situ studies. Overall, this research provides a proven landfill site selection methodology, which provides essential support for decision-makers.