The scrubbers (deposition columns) are absorption equipment very popular for their versatility.

The scrubbers (deposition columns) are composed of a cylindrical body in which takes place the purification process. In the tower is a wash which aims to neutralise harmful airborne particles. The substances removed by this process are organic and inorganic water-soluble chemical substances, which can react with acidic or basic aqueous solutions (for neutralisation) or with water alone.

The fumes to be treated enter the scrubber (deposition column) from a nozzle at the foot of the device. As they pass through it, the fumes are affected by a steady stream of washing liquid that is picked up by a recirculation pump from the holding tank at the base of the scrubber (deposition column) and is provided by a distribution system located above the washing section. The liquid is transported from the tank to the distribution system by means of a hydraulic circuit (piping). At the end of the treatment, there is a drop separator between the washing section and the outside atmosphere.

During the absorption process that occurs in the scrubber (deposition column), it can be sprayed with reagent, acid or alkaline depending on the nature of the substance to be removed, in order to increase the system’s absorption capacity.

The scrubbers (deposition columns) may be one stage or multi-stage.