On the strength of their high adsorption capacity, activated carbon filters are used widely for cleaning gases and liquids.
In water treatment, they are used to eliminate dissolved substances such as chlorinated hydrocarbons that are not retained by the other treatment steps (flocculation, sand filtration). The efficiency of activated carbon filters is monitored with photometric absorption measurement at ultraviolet wavelengths (254 nm), because most of the organic substances occurring in raw water exhibit strong absorption at this wavelength. Drinking water treatment; SAK; Activated carbon powder