Assessment of the in situ energy recovery potential from medium-sized landfills in Canada

该项目将涉及全面的基础和应用研究，以评估加拿大中型垃圾填埋场填埋场能源回收方法的潜力。重点将放在两种潜在的能源来源上，包括垃圾填埋气（LFG）的产生和低品位地热。拟议的研究旨在减少数据差距和不确定性，这些数据差距和不确定性是实施这些就地能源回收方法的障碍。城市固体废物（MSW）厌氧消化（AD）和其他技术的日益普及可能表明，从长远来看，在较大的城市，大部分富含有机物的废物将被转移，只留下相对惰性的残余物质填埋。然而，在加拿大各地的垃圾填埋场，仍将有数亿吨传统的城市固体废物在原地缓慢降解。虽然有机利用（通过人工种植或其他方式）无疑会越来越受欢迎，成本也会下降，但农村社区或小城市的小型垃圾填埋场在短期内不太可能在经济和技术上采用这种解决方案。****垃圾填埋场产生大量的热量，可以使用类似于浅层地热项目的技术来回收。热的产生机制已经被很好地理解，但废物的热和水力特性的表征对这种类型的发展提出了挑战。****

This project will involve comprehensive fundamental and applied research to assess the potential for landfill energy recovery methods for medium-size landfills in Canada. The focus will be on two potential sources of energy including landfill gas (LFG) generation and low-grade geothermal heat. The proposed research study is intended to reduce the data gaps and uncertainty that have represented obstacles to the implementation of these sort of in situ energy recovery approaches. The increasing popularity of municipal solid waste (MSW) anaerobic digestion (AD) and other techniques might indicate that, in the longer term in larger cities, much of the organic-rich waste will be diverted, leaving only a relatively inert residual material to be landfilled. There will remain, however, many hundreds of millions of tonnes of conventional MSW slowly degrading in situ in landfills across Canada. While organics utilisation (by AD or otherwise) will undoubtedly grow in popularity and decrease in cost, smaller landfills in rural communities or small cities are unlikely to economically and technically adopt such solutions in the short term.****Landfills generate substantial amounts of heat that could be recoverable using techniques similar to those used in shallow geothermal projects. The heat generation mechanisms are reasonably well understood but characterisation of thermal and hydraulic properties of waste presents a challenge to this type of development.****