Kieckhäfer Karsten, Breitenstein Anna, Spengler Thomas S
Technische Universität Braunschweig, Institute for Automotive Management and Industrial Production, Chair of Production and Logistics, Mühlenpfordtstr. 23, 38106 Braunschweig, Germany.
Technische Universität Braunschweig, Institute for Automotive Management and Industrial Production, Chair of Production and Logistics, Mühlenpfordtstr. 23, 38106 Braunschweig, Germany.
Waste Manag. 2017 Feb;60:748-764. doi: 10.1016/j.wasman.2016.06.012. Epub 2016 Jun 20.
This paper provides an economic assessment of alternative processes for landfill mining compared to landfill aftercare with the goal of assisting landfill operators with the decision to choose between the two alternatives. A material flow-based assessment approach is developed and applied to a landfill in Germany. In addition to landfill aftercare, six alternative landfill mining processes are considered. These range from simple approaches where most of the material is incinerated or landfilled again to sophisticated technology combinations that allow for recovering highly differentiated products such as metals, plastics, glass, recycling sand, and gravel. For the alternatives, the net present value of all relevant cash flows associated with plant installation and operation, supply, recycling, and disposal of material flows, recovery of land and landfill airspace, as well as landfill closure and aftercare is computed with an extensive sensitivity analyses. The economic performance of landfill mining processes is found to be significantly influenced by the prices of thermal treatment (waste incineration as well as refuse-derived fuels incineration plant) and recovered land or airspace. The results indicate that the simple process alternatives have the highest economic potential, which contradicts the aim of recovering most of the resources.
本文对与填埋场后期维护相比的垃圾填埋场开采替代工艺进行了经济评估，目的是帮助填埋场运营商在这两种替代方案之间做出选择。开发了一种基于物质流的评估方法，并将其应用于德国的一个垃圾填埋场。除了填埋场后期维护外，还考虑了六种替代垃圾填埋场开采工艺。这些工艺从大多数材料被焚烧或再次填埋的简单方法到允许回收高度差异化产品（如金属、塑料、玻璃、回收砂和砾石）的复杂技术组合不等。对于这些替代方案，计算了与工厂安装和运营、物质流的供应、回收和处置、土地和填埋场空间的回收以及填埋场关闭和后期维护相关的所有现金流的净现值，并进行了广泛的敏感性分析。发现垃圾填埋场开采工艺的经济性能受热处理价格（垃圾焚烧以及垃圾衍生燃料焚烧厂）和回收土地或空间的显著影响。结果表明，简单的工艺替代方案具有最高的经济潜力，这与回收大部分资源的目标相矛盾。
