Water treatment plants play a major role in the cycle of water recovery and reuse. Besides the benefits of water treatment plants, they have a great impact on the environment, social life, economy, and natural habitats. In this sense, decision-makers should effectively plan the construction and operational activities of plants, taking into account the expectations of users. Growing public expectations about water treatment plants increase the pressures on investors and government managers. In this study, we focus on defining and determining the weights of public expectations from water treatment plants and handle as a multi-criteria decision-making problem. A two-level hierarchical model is structured to evaluate public expectations from water treatment plants as model criteria. For the problem, a literature review is performed to search the main criteria. The most suitable criteria for the problem are determined using experts’ opinions. Then, the sub-criteria are determined. Experts’ evaluations are collected by face to face interviews. These evaluations are consolidated and finalized via the modified Delphi method. Trapezoidal Type-2 Fuzzy Analytic Hierarchy Process (T2F-AHP) is employed to determine criteria weights using results obtained by the modified Delphi method. A sensitivity analysis is performed to show the reliability of the proposed methodology. A comparison is also performed between the Analytic Hierarchy Process (AHP) and the proposed methodology. The results of this study can be used as a guide to develop public strategies about water treatment plants. Finally, conclusions and future directions of this work are given.

中文翻译：

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基于梯形 2 型模糊 AHP 方法优先考虑水处理厂公众期望的框架

水处理厂在水回收和再利用循环中发挥着重要作用。除了水处理厂的好处外，它们对环境、社会生活、经济和自然栖息地也有很大的影响。从这个意义上说，决策者应该有效地规划工厂的建设和运营活动，同时考虑到用户的期望。公众对水处理厂日益增长的期望增加了投资者和政府管理者的压力。在这项研究中，我们专注于定义和确定公众对水处理厂期望的权重，并将其作为多标准决策问题进行处理。构建了一个两级层次模型，以评估公众对水处理厂的期望作为模型标准。对于问题，进行文献综述以搜索主要标准。问题的最合适标准是使用专家的意见确定的。然后，确定子标准。专家评价采用面对面访谈方式收集。这些评估通过修改后的德尔菲法进行合并和最终确定。梯形类型 2 模糊层次分析法 (T2F-AHP) 用于使用通过改进的德尔菲法获得的结果来确定标准权重。执行敏感性分析以显示所提出方法的可靠性。还在层次分析法 (AHP) 和建议的方法之间进行了比较。本研究的结果可用作制定有关水处理厂的公共策略的指南。最后，给出了这项工作的结论和未来的方向。