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The Flue Gas Condensation project at A2A’s Brescia WtE plant is a pioneering initiative aimed at improving energy efficiency and environmental performance. This system enhances the thermal energy available for the district heating network, boosting overall energy efficiency while lowering emissions and eliminating water discharges from the flue gas treatment process. Advanced heat pumps, the system recovers latent heat from the flue gases, optimizing energy use without increasing the plant’s boiler capacity or the amount of waste processed. As a result, energy efficiency has improved from 84% to nearly 100% in full cogeneration mode, contributing an additional 60 MW of thermal power to the district heating network.
The WtE now supplies almost 80% of thermal energy compared to Brescia’s district heating system. This innovative upgrade includes the installation of a “wet” flue gas cleaning section, a heat recovery section through condensation, and a “tail-end” catalytic reduction system for nitrogen oxides. These improvements have reduced NOx emissions by 20% and HCl emissions by 96%, further enhancing the plant’s environmental performance.
Overall, the district heating system of the municipality of Brescia has led to a 40% reduction in emissions. Moreover, the water produced from flue gas condensation is fully recovered through a treatment plant, producing reverse-osmosis purified water for the DHS and demineralized water for the WtE. This eliminates water discharges by fully recovering and treating the water produced during the process, ensuring zero wastewater impact. This project reflects A2A’s commitment to sustainability, making Brescia’s energy system more efficient, cleaner, and environmentally responsible.
More information about the project
Other nominees for the 3rd CEWEP Integration Award:
MVV, Germany – Improvements in Energy Efficiency in District Heating
Sysav, Sweden – The Port of Trelleborg Expands with 87,000 tons of Sustainable “Slaggrus”
The Award winners will be decided by popular vote during CEWEP Congress 2025 on 5th June in Gdańsk.
About CEWEP Awards
