Off-site landfill gas (LFG) migration is usually best controlled at its source by installing a collection system in the landfill. If this fails, however, off-site migration can be controlled by intercepting the migration pathways with either passive or active extraction wells and/or trenches. The active systems are normally designed with an exhauster, which pulls LFG through the extraction wells or trenches and either vents it to the atmosphere or sends it to a control device ( e.g., a flare). This paper presents an alternative active system design, which utilizes a blower to push air into injection wells, thus cutting off LFG migration pathways with an air barrier.
AIR INJECTION TO CONTROL OFFSITE LANDFILL GAS MIGRATION DESIGN PARAMETERS MATHEMATICAL MODEL AND CASE STUDY
Presented at Wastecon
