Choosing a suitable location for the disposal of municipal solid waste is an important environmental problem. Thus, locating a municipal solid waste landfill has been very important. Leachate from the solid waste landfill causes the contamination of groundwater. However, the process is complicated and is based on qualitative and quantitative criteria. Therefore, in this paper, a hybrid approach for determining the optimal location of a municipal solid waste landfill has been presented. Additionally, the present study attempts to evaluate the potential of aquifer contamination vulnerability on the proposed landfill sites using a DRASTIC model of Plain Zanjan and provide a zoning map of vulnerable areas. In this study, the DRASTIC model for aquifer vulnerability mapping is used. This model consists of seven hydrogeological parameters effective in contaminating the aquifer. The parameters appear in the GIS software as seven layers on which the analysis is performed. Considering the map of aquifer vulnerability and with regard to the potential aquifer contamination at various areas, it is possible to determine a suitable site for the landfill. At present, about 49.03% of the aquifers are in average vulnerability situation; by considering them, a suitable site for the landfill can be determined. Accordingly, the considered criteria were determined by AHP method; the weights of the layers were determined, and then the appropriate places were classified into three classes, high, moderate or low, using GIS software. Finally, zones located in the high classes were selected as the best locations for waste disposal by the PRPMOTHEE method, by taking into account the scientific limitations and conditions of the area. The results showed that proposed methods in this paper can be suitable to determine appropriate option for waste disposal. In the future, there can be a lot of studies for modeling to choose a suitable landfill due to some soil characteristics and applying other models of pollution to groundwater in the region.

选择适合处置城市固体废物的地点是一个重要的环境问题。因此，找到城市固体垃圾掩埋场非常重要。固体垃圾填埋场的渗滤液会污染地下水。但是，该过程很复杂，并且基于定性和定量标准。因此，在本文中，提出了一种用于确定城市生活垃圾填埋场最佳位置的混合方法。此外，本研究尝试使用平原赞詹的DRASTIC模型评估拟建垃圾填埋场上含水层污染脆弱性的可能性，并提供脆弱区域的分区图。在这项研究中，使用DRASTIC模型进行含水层脆弱性映射。该模型由有效污染含水层的七个水文地质参数组成。参数在GIS软件中显示为进行分析的七个层。考虑到含水层脆弱性的地图以及各个区域潜在的含水层污染，有可能确定一个适合填埋场的地点。目前，约有49.03％的含水层处于平均脆弱状态；通过考虑它们，可以确定合适的填埋场。因此，考虑的标准是通过层次分析法确定的。确定各层的权重，然后使用GIS软件将适当的位置分为高，中或低三类。最后，考虑到该地区的科学局限性和条件，通过PRPMOTHEE方法将高等级区域选为最佳废物处置地点。结果表明，本文提出的方法可适合于确定适当的废物处理方案。将来，由于土壤的某些特性，对于选择合适的垃圾填埋场进行建模的研究很多，并且对该区域的地下水应用了其他污染模型。