Gas Collection & Utilisation

Arthurstown Landfill is the largest Landfill Gas to Electricity Facility in Ireland. With 4.8 million tonnes of waste landfilled, the current rates of landfill gas extraction are on average  approximately 11,000 m3 per hour.

The methanogenic (second) stage of organic waste biodegration produces landfill gas. This stage commences in waste that is 6-12 months old and can continue for over 30 years. The maximum Methane composition in landfill gas is typically 60% v/v with the balance (40% v/v) being made up mainly of carbon dioxide. Minor constituents give landfill gas a distinctive odour, which is destroyed upon high temperature combustion.

The gas produced at Arthurstown is collected from within the waste body by a system of vents installed as the waste is placed in the cell or drilled later as part of the final capping works. These vents are then connected to a collection pipe system that transports the gas to a landfill gas utilisation plant. This Landfill Gas Utilisation Plant comprises of 11 gas engines and 2 no enclosed flares.

It is the largest landfill gas to electricity plant in Ireland. The 2 no HAASE 2,500 m3 per hour landfill gas flares are on stand by should any of the engines shut down. This is to maintain the gas extraction rates on site to prevent odours occurring. The electricity generated by gas-powered engines on site is fed to the ESB national power grid.

The Council have also installed 2 no HASSE 2,500 m3 per hour enclosed landfill gas flares which maintain extraction on the temporary capped areas where gas would not be mature enough for electricity production but would still cause odours. Currently all gas is now being utilised at Arthurstown.

The Council have also installed 2 no HASSE 2,500 m3 per hour enclosed landfill gas flares which maintain extraction on the temporary capped areas where gas would not be mature enough for electricity production but would still cause odours. Currently all gas is now being utilised at Arthurstown.

  • From the Gallery…

    Eurasian Eagle Owl at Arthurstown Landfill LINER - Arthurstown Landfill ORIG SITE LAYOUT - Arthurstown Landfill Arial - Arthurstown Landfill