• Air stream from the bottom to the top
• High separation results / high efficiency
• Low investment and operation costs
• High flexibility against variable waste gas amount
• Optimal consumption of fresh water and added chemicals
• Little space demand / compact size
• Low pressure loss
• Corrosion resistant
• Weather resistant
• Low risk of plugging due to the structure of the packing material
• Easy overview and easy handling of the display
• Possible use as a bio-scrubber

H₂S is treated with an alkaline washing liquid (diluted sodium hydroxide). The neutralization resulting from the desalination process would, however, lead to stripping of sulphide to H₂S which would again cause odour problems. To avoid a transfer of the waste air problem to the downstream sewer system, the diluted sulphide is oxidized to sulphate remaining dissolved as salt even at neutralization. The oxidation is made with hydrogen peroxide (H₂O₂) which is added depending on the redox potential of the washing liquid.

Ammonia (NH₃) is efficiently treated with diluted sulphuric acid. Stripping is hereby avoided by sulphate ions (SO₄^2-) being provided in the diluted sulphuric acid. These ions form stable salts together with diluted ammonia. Stripping to ammoniac is therefore avoided.