Department of Geography, Faculty of Science, Aligarh Muslim University, Aligarh, U. P., India.
Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, 97187, Luleå, Sweden.
Environ Sci Pollut Res Int. 2021 Feb;28(6):7528-7550. doi: 10.1007/s11356-020-11004-7. Epub 2020 Oct 9.
Sanitary landfill is still considered as one of the most significant and least expensive methods of waste disposal. It is essential to consider environmental impacts while selecting a suitable landfill site. Thus, the site selection for sanitary landfill is a complex and time-consuming task needing an assessment of multiple criteria. In the present study, a decision support system (DSS) was prepared for selecting a landfill site in a growing urban region. This study involved two steps of analysis. The first step of analysis involved the application of spatial data to prepare the thematic maps and derive their weight. The second step employed a fuzzy multicriteria decision-making (FMCDM) technique for prioritizing the identified landfill sites. Thus, initially, the analytic hierarchy process (AHP) was used for weighting the selected criteria, while the fuzzy technique for order of preference by similarity to ideal solution (FTOPSIS) was applied for addressing the uncertainty associated with decision-making and prioritizing the most suitable site. A case study was conducted in the city of Memari Municipality. The main goal of this study was the initial evaluation and acquisition of landfill candidate sites by utilizing GIS and the following decision criteria: (1) environmental criteria consisting of surface water, groundwater, land elevation, land use land cover, distance from urban residence and buildup, and distance from sensitive places; and (2) socioeconomic criteria including distance from the road, population density, and land value. For preparing the final suitability map, the integration of GIS layers and AHP was used. On output, 7 suitable landfill sites were identified which were further ranked using FTOPSIS based on expert's views. Finally, candidate site-7 and site-2 were selected as the most suitable for proposing new landfill sites in Memari Municipality. The results from this study showed that the integration of GIS with the MCDM technique can be highly applied for site suitability. The present study will be helpful to local planners and municipal authorities for proposing a planning protocol and suitable sites for sanitary landfill in the near future.
卫生填埋仍然被认为是最具意义和最经济的废物处理方法之一。在选择合适的垃圾填埋场时，必须考虑环境影响。因此，垃圾填埋场的选址是一项复杂且耗时的任务，需要对多个标准进行评估。在本研究中，为一个不断发展的城市地区准备了一个决策支持系统 (DSS) 来选择垃圾填埋场。该研究涉及两个分析步骤。分析的第一步涉及应用空间数据来准备专题地图并推导其权重。第二步采用模糊多准则决策 (FMCDM) 技术对已识别的垃圾填埋场进行优先级排序。因此，最初使用层次分析法 (AHP) 对所选标准进行加权，而模糊理想解排序技术 (FTOPSIS) 则用于解决与决策相关的不确定性并对最合适的场地进行优先级排序。在梅马里市进行了案例研究。本研究的主要目标是利用 GIS 和以下决策标准对垃圾填埋场候选场地进行初步评估和获取：(1) 环境标准，包括地表水、地下水、地面高程、土地利用/土地覆盖、与城市居住和建筑物的距离以及与敏感地点的距离；(2) 社会经济标准，包括与道路的距离、人口密度和土地价值。为了准备最终的适宜性地图，使用了 GIS 图层和 AHP 的集成。输出结果确定了 7 个适宜的垃圾填埋场，根据专家意见，进一步使用 FTOPSIS 进行了排名。最后，选择候选场地-7 和场地-2 作为在梅马里市提议新垃圾填埋场的最适宜场地。本研究结果表明，GIS 与 MCDM 技术的集成可高度应用于场地适宜性。本研究将有助于当地规划者和市政当局在不久的将来为卫生填埋提出规划协议和适宜场地。
