Odour scrubber (oxidative scrubber) in the chemical industry

Some chemical processes unfortunately have the bad characteristic that it stinks, this stench can be caused by different components. Air Solutions Holland often uses a alkaline oxidative air scrubber for this type of odour control. The organic odour components are oxidized in an alkaline environment, at pH 7 - 12. Most of the strong oxidants used are sodium hypochlorite (NaOCl), potassium permanganate (KMnO₄) or hydrogen peroxide (H₂O₂).

Odour removal is a very complex matter and depends very much on the composition of the odour components. It is therefore certainly advisable to carry out preliminary tests in order to be able to specifically determine the removal efficiency. Air Solutions can have an odour profile mapped by continuous monitoring. Depending on the contaminants, it is sometimes desirable to first pass the air through an acidic scrubber, then oxidize odorous components in a 2nd stage and finally neutralize everything in an alkaline scrubber.