ICEA, Department of Civil, Architectural and Environmental Engineering, University of Padua, via Venezia 1, I-35131 Padova, Italy.
DII, Department of Industrial Engineering, University of Padua, via Marzolo 9, I-35131 Padova, Italy.
Waste Manag. 2014 Jul;34(7):1199-205. doi: 10.1016/j.wasman.2014.03.018. Epub 2014 Apr 20.
A comprehensive approach for the evaluation of the economic feasibility of landfill mining (LFM) should take into account not only the direct costs and revenues for the private investor, but also the social benefits or costs (generally called externalities), in such a way that projects generating major social benefits (and no significant private revenues) are not overlooked. With a view to contributing to the development of a common framework for the evaluation of LFM projects, this paper presents the results of a case study where the issue of the assessment of social benefits from a LFM project is addressed. In particular, the Contingent Valuation Method is applied for the monetary assessment of the community-perceived benefits from the remediation of an old uncontrolled waste deposit by means of LFM and the conversion of the area into a park. Based on the results of a survey carried out on a random sample of people living near the old landfill, the economic values of the individual willingness to pay (WTP) for LFM and the subsequent creation of a public park were calculated and the correlations with the relevant variables (distance from the landfill site, age, income, sex, education level) assessed. The results were then suitably extended and the monetary value of the welfare increase of the whole population resident in the area and potentially affected both by LFM and the creation of the park was calculated.
对垃圾填埋场开采（LFM）的经济可行性进行全面评估时，不仅应考虑私人投资者的直接成本和收益，还应考虑社会效益或成本（通常称为外部性），以使产生重大社会效益（且没有显著私人收益）的项目不被忽视。为了有助于制定 LFM 项目评估的共同框架，本文介绍了一项案例研究的结果，其中涉及评估 LFM 项目的社会效益问题。具体而言，本文应用条件价值评估法对通过 LFM 修复一个旧的无控制废物堆积场并将该区域改建为公园所产生的社区感知收益进行货币评估。基于对居住在旧垃圾填埋场附近的随机抽样人群进行的一项调查的结果，计算了个人对 LFM 的支付意愿（WTP）和随后创建公共公园的经济价值，并评估了它们与相关变量（距垃圾填埋场的距离、年龄、收入、性别、教育水平）之间的相关性。然后，对结果进行适当扩展，计算了整个居住在该地区且可能同时受到 LFM 和公园建设影响的居民的福利增加的货币价值。
