Reductive scrubber
Reductive gas scrubbing enables the efficient removal of halogenated compounds such as bromine and chlorine from industrial air streams. Through absorption in water followed by chemical reduction, and supported by automated control of ORP, pH and conductivity, the system ensures stable performance, optimised chemical use and reliable emission control.
Why choose a Reductive scrubber?
Removal of halogenated compounds
- bromine (Br₂)
- chlorine (Cl₂)
- …
Halogenated compounds treated with reductive scrubbing
How does Trevi's reductive scrubber work?
Reductive gas scrubbing implies a transfer of volatile components from the gas phase to the liquid phase (water), followed by chemical reduction of the dissolved compounds. This reduction is most often realised using sodium bisulphite (NaHSO₃) as a reductant.
ORP, pH and conductivity control
Reductive scrubbing can be operated in batch mode when the expected input of volatiles is well known. For most applications, automated dosing based on ORP and pH control is applied. Control of pH is crucial to optimise kinetics, minimise chemical consumption, prevent deposit formation and limit the emission of unwanted compounds. Refreshment of the scrubbing liquid is typically based on electrical conductivity (EC).
Related air treatment techniques
Biological
Additional techniques
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