One of the most important challenges in solid waste management throughout the world is selection of suitable landfill sites. It is essential for solid waste management, because unscientific dumping and landfilling of waste could negatively impact the environment and human health. This research presents a GIS-based multi-criteria decision support approach for assessing the suitability analysis for landfill site selection in Kolkata Municipal Corporation, India. In highly urbanized areas of Kolkata, there is stress regarding the location of potential landfill sites, because existing waste dumping ground, i.e., Dhapa have no longer space to hold waste after 2 or 3 years. The availability of land is also a major tension than financial assistance in the study area. Therefore, the present study developed a methodological framework for locating suitable landfill candidate sites and selecting the best alternatives. Thus, 20 relevant alternatives were selected and relative weight calculated using the fuzzy analytic hierarchy process. The geographic information system was considered to arrange the spatial and aspatial data. The alternatives of all criteria were rated from 1–5 scale indicating lowest to highest suitability for landfill. The weighted linear combination was performed between different criteria for modeling suitable candidate sites. The results revealed that throughout the study area, initially, 16 candidate sites were identified based on geospatial analysis, but out of them, 13 sites cannot be accepted for a landfill site due to current land use, public acceptance, transportation, and local environmental issues. Only three suitable sites can be considered for landfilling, although these are also not completely satisfying the environmental concern. However, landfill site is also essential; otherwise, it will appear as more adverse impact. Therefore, with little compromising with the environmental component, the engineered plan can be designed for the sanitary landfill on specific sites that recommended in this suitability analysis.

中文翻译：

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基于模糊层次分析和地理空间技术的城市垃圾填埋场选址适宜性分析

全世界固体废物管理中最重要的挑战之一是选择合适的垃圾填埋场。这对固体废物管理至关重要，因为不科学的废物倾倒和掩埋可能会对环境和人类健康产生负面影响。这项研究提出了一种基于GIS的多准则决策支持方法，用于评估印度加尔各答市政公司对填埋场选择的适用性分析。在加尔各答高度城市化的地区，潜在的垃圾掩埋场的位置存在压力，因为现有的废物倾倒场（即Dhapa）在2年或3年后不再拥有容纳废物的空间。与研究区的财政援助相比，土地的可利用性也是一个主要的压力。因此，本研究开发了一种方法框架，用于定位合适的垃圾掩埋场并选择最佳替代方案。因此，选择了20个相关替代方案，并使用模糊层次分析法计算了相对权重。地理信息系统被认为可以布置空间和空间数据。所有标准的替代方案的等级为1-5，表明最低或最高适用于垃圾填埋场。在不同的标准之间执行加权线性组合，以对合适的候选位点建模。结果表明，在整个研究区域中，最初根据地理空间分析确定了16个候选地点，但其中有13个地点由于当前的土地使用，公众接受，交通，和当地的环境问题。尽管还不能完全满足环境要求，但只能考虑三个合适的填埋场。但是，垃圾填埋场也是必不可少的。否则，它将显示为更多不利影响。因此，在不影响环境成分的前提下，可以针对该适合性分析中建议的特定地点的卫生垃圾填埋场设计工程计划。