Aquilair™

Principle

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.

Performance

• 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.