The use of a waste-derived daily cover to enhance geo-environmental performance of sanitary landfills

尽管在过去几十年中提出了许多先进的废物处理和回收技术，但在任何废物管理系统中，将剩余的固体废物处置到卫生填埋场是不可避免的。因此，关于更好地利用填埋技术的知识无疑是有价值的。传统上，垃圾填埋场的设计原则大量借鉴了过去的经验和经验公式。虽然这种方法在过去因其简单性而被接受，但其不可靠的性能无法跟上当今新兴的标准。世界各地的监管机构都要求填埋场每日覆盖物，它们可能占总填埋场空间的30%。关于填埋场日常覆盖物使用的现有工作大多集中在单元几何形状和填埋场地形的设计、建模和优化，以尽量减少所需的日常覆盖物数量。目前的建议更进一步，寻求扩大和重新定义卫生填埋场日常覆盖的作用。鉴于所需的巨大体积，相信日用封面的使用不需要限于其传统功能，而是可以进一步扩展以包含新功能。因此，拟议的工作旨在证明，通过仔细选择材料和彻底了解其工程行为，废物衍生的日常覆盖物可以提高填埋场的运营，机械和环境性能。本文将通过一系列的实验来验证上述假设。拟议的工作将有助于我们了解每日覆盖物对堆填区地质环境的影响。废物利用促进了可持续废物管理做法，因为它将废物转化为有益的建筑材料。拟议工作的结果将对现行填埋条例的现状提出挑战，并将导致制定更好的技术程序和准则。

In spite of many advanced waste processing and recovery techniques that have been proposed in the last decades, the disposal of remaining solid wastes to sanitary landfills is inevitable in any waste management system. Therefore, knowledge concerning better utilization of the landfill technology is unquestionably valuable. Traditionally, the design principles of landfills have borrowed heavily on past experience and empirical equations. While this approach was accepted in the past for its simplicity, its unreliable performance failed to keep up with today's emerging standards. Landfill daily covers are required by regulatory agencies around the world and they may occupy up to 30% of total landfill space. Most of the existing work on the use of daily cover in landfills focused on the design, modeling and optimization of cell geometry and landfill topography to minimize the amount of daily cover required. The present proposal goes a step further and seeks to broaden and redefine the role of daily cover in sanitary landfills. Given the gigantic volume required, it is believed that the use of daily cover does not need to be limited to its conventional functions, but may be extended further to incorporate new functionalities. The proposed work therefore seeks to demonstrate that, with careful selection of materials and thorough understanding of their engineering behaviors, waste-derived daily covers may enhance the operational, mechanical and environmental performance of landfills. A series of experiments will be carried out to verify the above hypothesis. The proposed work will contribute to our knowledge of daily cover with respect to the geo-environmental performance of landfills. The utilization of waste materials promotes sustainable waste management practices as it converts waste to beneficial construction materials. The results of the proposed work will challenge the status quo of current landfill regulations and will lead to the development of improved technical procedures and guidelines.