Leachate generation reduction: Assessment of final cover layouts using lysimeters

减少渗滤液产生：使用蒸渗仪评估最终覆盖布局

• 批准号: 508222-2016
• 负责人: Cabral, Alexandre
• 金额: $ 3.1万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=688576
• 关键词: Leachate; generation; reduction; Assessment; final

Waste Management (WM) operates several landfills in Canada and leachate generation is quite important in some old sites, particularly in cells that were capped following the now-outdated Quebec's landfill regulation. The latter did not require final covers to create an impedance to seepage of water through the cover, thereby reducing leachate generation. Leachate is expensive to collect and treat, and its presence may disturb waste decomposition and clog biogas wells screens. The central theme of this project is leachate generation reduction. This is usually achieved by appropriate cover design. But, irrelevant of design and materials, effectiveness of the design has to be assessed by proper measurement of seepage over time. In this project, we will test the reliability of lysimeters to assess infiltration in the field. This is fundamental to give credibility to the exercise of assessing the effectiveness of any final cover design. As far as design and materials are concerned, we will evaluate the behaviour of contaminated soils as part of cover systems and their impact on the surrounding environment. The goal is to open new avenues for their beneficial reuse, which is strategic for WM and to the landfilling industry at large. In addition to the formation of highly qualified personnel in this important area of civil engineering, there are important practical, economical and scientific outcomes to expect from this partnership with WM, including: significant reduction in leachate treatment costs, development of new final cover strategies, and documentation of large-scale lysimeters and of unsaturated flow through final covers.

废物管理（WM）在加拿大经营几个垃圾填埋场，在某些旧地点，浸出岩的产生非常重要，尤其是在魁北克省已故的垃圾填埋场法规之后被封闭的细胞中。后者不需要最终的盖子就可以通过盖子渗出水，从而减少了渗滤液的产生。渗滤液的收集和治疗价格昂贵，其存在可能会干扰废物分解和堵塞沼气井筛。该项目的中心主题是减少渗滤液。这通常是通过适当的覆盖设计来实现的。但是，与设计和材料无关，必须通过随着时间的推移对渗漏进行适当的测量来评估设计的有效性。在该项目中，我们将测试溶液计评估该领域浸润的可靠性。这是为了评估任何最终覆盖设计的有效性的行使的信誉是至关重要的。就设计和材料而言，我们将评估受污染的土壤作为覆盖系统的一部分及其对周围环境的影响的行为。目的是为其有益的再利用开放新的途径，这对WM和整个垃圾填埋行业都是战略性的。除了在土木工程的这一重要领域形成高素质的人员外，与WM的这种合作伙伴关系还可以期望具有重要的实践，经济和科学成果，包括：大幅度降低了渗滤液治疗成本，开发新的最终覆盖策略以及大规模的溶液仪和大规模溶血仪和不饱和流的大规模流量。