Adsorption is a surface phenomenon by which molecules attach to an adsorbent solid using various processes that vary in intensity (physical or chemical adsorption).
Activated carbon is widely used in the adsorption of micropollutants. This material is usually in granular form inside a filter or in powder form, generally in an activated carbon contactor/separator.
The Pulsazur™ technology proposed by SUEZ uses lamellar clarifiers with a powdered activated carbon pulsed blanket. These clarifiers remove the majority of micropollutants. Their effectiveness increases tenfold on adsorbable compounds such as pesticides and alkylphenols.
Water circulates evenly and uniformly within the structure, from bottom to top, crossing the blanket of activated carbon. Pulses optimise the capture of dissolved organic matter and micropollutants by the activated carbon, favouring their adsorption and their subsequent removal by lamellar settling.
Adsorption is not only efficient and economical, it is also environmentally sound: the Pulsazur™ clarifier can operate with or without polymers; it consumes fewer reagents and uses less energy.