Activated carbon is broadly used, worldwide, in water treatment. The surface or ground waters purification often requires the use of activated carbon. For this application, activated carbon, in granular (GAC) or powdered form (PAC), is used to remove from raw waters unpleasant MIB, Geosmin , odour and taste.
Granular activated carbon is often used in dechlorination and final purification of high purity water in mineral waters industry, beer and soft drinks. In waste waters treatment, activated carbon is used in the final stage of industry and sewage waters treatment, to remove dyestuff, surfactants, hydrocarbons etc. For this application activated carbon is often used under powdered form in combination with biodegradation process.
Carbon is dosed in the aeration basin and a rapid reduction of foam formation on the surface is observed. Detergents and other organic materials are quickly adsorbed and the granular activated carbon is used, within filter vessels, in potable water purification and dechlorination and in waste waters treatment plants.
Granular activated carbon is very suitable to remove dissolved non-biodegradable organics to extremely low concentration levels. In waste waters treatment, powdered activated carbon is used as final treatment step of industrial waste waters or sewage waters to remove colour bodies, surfactants, hydrocarbons, etc.
In this process powdered activated carbon is often combined with biodegradation process, where the product dosage in aeration basins improves the effectiveness in removal of pollutants