Air quality control systems

Clean air solutions for steam power plants

Ensure you meet the most stringent environmental regulations easily and effectively with a tailored solution from Alstom. We are the number 1 supplier of air quality control systems (AQCS) in the world.

Why choose Alstom air quality control systems? 

• Broadest portfolio of air quality control system technologies
• Largest installed base with more than 440 GW in power generation applications
• Technology leadership driven by dedicated R&D and feedback from installed base
• Global presence with highly competent local project execution units 

We have a range of air quality control systems specific to your needs:

• Selective catalytic reduction of NOx (SCR): high reduction rates of NOx emissions, with excellent reliability
• Flue gas desulphurisation: cover all types of fuels and specific requirements with wet, seawater and dry processes
• Particulate control: combining innovative gas cleaning methods, low maintenance and retrofit adaptability in one total solution
• Mercury control: Reduce mercury emissions by up to 90% with Alstom technologies