Aquilair™ is a chemical scrubber which transfers odorous molecules to an aqueous solution.



Aquilair™ comprises one or more successive washes of polluted air in a counterflow system, via aqueous solutions, in wet scrubbers operating in series. These scrubbers are filled with inert material watered with the chemical solution which enhances the contact between the gas and the liquid.



  • Aquilair™ treats highly concentrated gaseous effluent which may have concentrations of odorous components as high as 1 g/m³.
  • This highly reliable technique enables to achieve treatment yields in excess of 99%, ensuring the total absence of odor-induced pollution.

The scrubber packing material characteristics (type, specific area, volume, depth) are selected to optimize the gas-liquid contact time and molecule transfer.


Features & Benefits
Aquilair™, an efficient modular system easy to operate.

Aquilair™ modular technology is designed to fit all types of installation, new or the extension of an existing plant. This process can be used on a wide range of flow rates and therefore is suitable for all sizes of wastewater treatment plants.

  • Aquilair™ is a fully automatic process. Active solution recirculation can deal with load variations without affecting the quality of the air discharged.
  • Aquilair™ achieves constant discharged air quality. Its efficiency, higher than 99%, makes it the technology most suitable whenever a "zero nuisance" objective is required.


Some Case Studies

  • Grenoble-Aquapôle, 2014, 145,000 m3/h
  • Lille-Marquette, 2013, 2 x 70,000 m3/h + 1 x 74,000 m3/h
  • Carré de Réunion, 2013 (Versailles - 78)
  • Rennes, France 2013, 27,300 m3/h
  • Seine aval DERU, France, 2012, 236,000 m3/h
  • La Teste, France, 2012, 34,000 m3/h
  • CAMY (Mantes-en-Yvelines -78), France, 2012, 71,000 m3/h
  • Cergy Pontoise, France, 2011, 60,000 m3/h
  • Anger la Baumette, France 2011, 100,000 m3/h
  • Seilh, France, 2010, 41,000 m3/h
  • Langon, France, 2010, 15,000 m3/h
  • Evry, France, 2010, 40,600 m3/h + 38,500 m3/h
  • Marne Aval, France, 2009, 65,550 m3/h
  • Bruxelles nord, Belgium, 2008, 170,000 m3/h
  • Palm Jumeirah STP Upgrade, UAE


Aquilair™ comprises one to four chemical scrubbers, usually synthetic resin columns:

  • The first, operated in acid conditions (pH between 2 and 3), is used for nitrogenous compound removal,
  • The second and third, operated in basic conditions (pH 9 and pH 11), with the addition of an oxidant, are dedicated to the removal of sulfide compounds (H₂S, Mercaptans...). When the hydrogen sulfide content of the gaseous effluent is not too high, one tower of this type may be sufficient.
  • The last, into which a reducing agent is added, operated at a neutral pH neutralizes any potential excess of oxidant used upstream.