Product Catalogue: Air quality control systems


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 

Selective catalytic reduction of NOx (SCR)

Choose a solution from the world leading provider of SCR systems

Particulate control systems

Remove particle matter (PM) from a wide variety of fuels with a solution tailored to your needs.

Mercury control systems

Reduce mercury emissions by up to 90% with Alstom’s KNX™ technology.

Flue gas desulphurisation solutions

Easily remove SO2 from your coal-fired steam generators.