Ayaim Michael Kaamo, Fei-Baffoe Bernard, Sulemana Alhassan, Miezah Kodwo, Adams Festus
Department of Environmental Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Centre for Environment and Population Health, Griffith University School of Medicine, Brisbane, Australia.
Heliyon. 2019 Oct 15;5(10):e02537. doi: 10.1016/j.heliyon.2019.e02537. eCollection 2019 Oct.
Landfilling, which sits at the bottom of the waste management hierarchy, is the most employed option for managing waste in many emerging economies. In view of the numerous environmental and public health challenges associated with operation of landfills, proper siting would require inputs that overcome the challenges. This study sought to use Geographic Information System application through multi-criteria decision technique to spatially locate suitable sites that fulfill standard landfill guidelines, for waste disposal. Spatial Analyst extension within ArcGIS software was employed for the suitability analysis. Three processes were involved: (1) digitizing to determine boundaries around built up areas, (2) buffering for proximity analysis in order to generate zones around features such as roads, streams, etc. and (3) overlay analysis to determine areas suitable for landfilling. The findings from this study revealed that about 2.62% of the total area was considered as most suitable for landfilling, 2.74% deemed suitable and a large portion (94.64%), considered unsuitable. The study identified 6 most suitable sites that can be used for landfill development in the study area burdened with urbanization. GIS has been used to determine suitable sites for landfill development. Findings from the study serve as guideline for environmentally friendly landfill siting with efficient land-use planning.
填埋是垃圾管理体系中最底层的方式，在许多新兴经济体中，它是处理垃圾最常用的选择。鉴于与垃圾填埋场运营相关的众多环境和公共卫生挑战，合适的选址需要能克服这些挑战的相关因素。本研究试图通过多标准决策技术运用地理信息系统应用，在空间上确定符合标准垃圾填埋指南的合适垃圾处理场地。利用ArcGIS软件中的空间分析扩展模块进行适宜性分析。该分析涉及三个过程：（1）数字化以确定建成区周围的边界，（2）缓冲分析以进行邻近度分析，从而生成道路、溪流等要素周围的区域，以及（3）叠加分析以确定适合填埋的区域。本研究结果显示，总面积中约2.62%被认为最适合填埋，2.74%被视为适宜，而很大一部分（94.64%）被认为不适宜。该研究确定了6个最适合的场地，可用于在受城市化影响的研究区域内开发垃圾填埋场。地理信息系统已被用于确定适合开发垃圾填埋场的场地。研究结果可为实现环境友好型垃圾填埋选址及高效土地利用规划提供指导。
