Passive methane oxidation biosystems for long term mitigation of fugitive emissions from old landfills

用于长期减少旧垃圾填埋场无组织排放的被动甲烷氧化生物系统

• 批准号: 548667-2019
• 负责人: Cabral, Alexandre
• 金额: $ 4.87万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=721062
• 关键词: Passive; methane; oxidation; biosystems; long

According to Canada's 2015 Greenhouse Gas Inventory, 19 Megatonnes (Mt) of carbon dioxide equivalent, out of the 30 Mt generated by Canadian landfills were ultimately emitted, some escaping to the atmosphere in the form of fugitive - or uncontrolled - methane (CH4) emissions. Landfill emissions can continue for decades after biogas extraction systems reach end-of-life or have been turned off. Successful land reclamation projects, such as turning an old landfill into a park, depends of passive, low-maintenance, technologies that can cope with these emissions. The main goal of this research is to apply the design procedure developed by the PI, which takes into consideration the hydraulic behaviour of passive methane oxidation biosystem (PMOB), to construct and monitor a pilot-scale PMOB at the old Kitchener landfill, recently turned into a park (McLennan municipal park). Our main hypothesis is that this design methodology, with inclusion of recent design recommendations adopted in Europe, will lead to an effective PMOB that is capable of abating the methane fugitive emissions that presently reach the surface of the Kitchener landfill to an acceptable level. This design methodology is based mainly on the hydraulic properties of the PMOB and how they can affect gas migration within un unsaturated porous media. Lack of attention to it, may lead to high methane loadings, i.e., high surface fluxes or hotspots. The novelty of this project is that it will be the first where a PMOB will be designed with formal consideration of unsaturated flow of water and gas. The documentation of the effectiveness of this pilot-scale PMOB will be instrumental in helping the Region Municipality of Waterloo (RMW) and its consultant, GHD, develop a long-term, durable, strategy to abate methane emissions at the Kitchener landfill and other landfills under the responsibility of the RMW. Ultimately, our team aims at proposing a low-maintenance, high impact technology to abate landfill emissions that could be applied by landfill designers and operators across Canada.

根据加拿大2015年温室气库存，最终发出了加拿大垃圾填埋场产生的30吨二氧化碳等效碳（MT），其中有些以逃犯或未控制的 - 甲烷（CH4）发射的形式逃到了大气中。 沼气提取系统到达寿命末或已关闭后，垃圾填埋场的排放可能会持续数十年。成功的土地开垦项目，例如将旧垃圾填埋场变成公园，取决于被动，低维护的技术，可以应对这些排放。 这项研究的主要目的是应用PI开发的设计程序，该程序考虑了被动甲烷氧化生物系统（PMOB）的液压行为，以构建和监视旧基奇纳垃圾填埋场的飞行员规模的PMOB，最近变成了公园（McLennan Municipal Park）。我们的主要假设是，这种设计方法包括在欧洲采用的最新设计建议，将导致有效的PMOB，能够减少甲烷逃避的排放，目前将目前达到基奇纳垃圾填埋场表面达到可接受的水平。这种设计方法主要基于PMOB的液压特性，以及它们如何影响非饱和多孔介质中的气体迁移。缺乏注意力，可能导致高甲烷载荷，即高表面通量或热点。该项目的新颖性是，它将是第一个将对水和气体不饱和流动的正式考虑设计的PMOB。 该试点规模PMOB有效性的记录将有助于帮助该地区滑铁卢市（RMW）及其顾问GHD制定长期，耐用的策略，以减轻基奇纳垃圾填埋场和其他垃圾填埋场的甲烷排放。最终，我们的团队旨在提出一种低维护，高影响力的技术，以减轻加拿大垃圾填埋场设计师和运营商可以应用的垃圾填埋场排放。