COLLECTION AND UTILIZATION OF METHANE AT THE SOLID WASTE LANDFILL IN ATHENS

"BEAL" (2021)

The purpose of the project was to introduce energy-saving technology for the collection and utilization of landfill gas (LFG) formed through the anaerobic decomposition of organic waste at a solid waste disposal site (SWDS) in Athens, Greece. The project aimed to harness the energy potential of LFG, converting it into a valuable source of electricity, while simultaneously reducing greenhouse gas emissions.

Construction of Gas-Collecting Wells

A total of 1,300 gas-collecting wells were constructed across the landfill site to capture the landfill gas. These wells were strategically placed to ensure coverage of 95% of the waste, maximizing the capture of LFG.

The wells were connected to an extensive network of pipes and treatment facilities, enabling the efficient transport of captured gas to the energy production system.

Local Transport and Treatment System

The captured LFG was routed through a local transport system designed to carry the gas to a central treatment facility. This system was crucial for purifying the gas, removing impurities, and ensuring it was suitable for use in energy production.

The treated LFG was then supplied to cogeneration equipment capable of converting the gas into electricity.

Electricity Production and Supply

The cogeneration equipment, fueled by the treated LFG, had an installed capacity of 23.5 MW. This allowed to produce approximately 185,000 MWh of electricity per year.

The electricity generated was either fed into the local grid, contributing to the region’s energy supply, or used to meet the plant’s own energy needs, enhancing its operational efficiency.

Greenhouse Gas Emission Reduction

By capturing and utilizing LFG, the project significantly reduced methane emissions, a potent greenhouse gas. This led to substantial reductions in overall greenhouse gas emissions.

The project achieved an annual reduction of approximately 431,903 tons of CO₂-equivalent during the first commitment period, with projected reductions of 451,077 tons of CO₂-equivalent for the subsequent period. This resulted in 882 980 European reduction units.

This resulted in 882 980 European reduction units.

Environmental and Economic Impact

The project not only contributed to the reduction of greenhouse gas emissions but also provided a sustainable energy source, thereby supporting Greece’s environmental and energy goals.

The successful implementation of this technology showcased the potential of landfill gas utilization as a viable solution for both waste management and renewable energy production.