As stated in Section 1, activated carbon is one of the most effective media for removing a wide range of contaminants from industrial and municipalwastewaters, landfill leachate and contaminated groundwater.As the world's most powerful adsorbent, it can cope with a wide range of contaminants. Different contaminants may be present in the same discharge and carbon may be used to treat the total flow, or itmay be better utilized to remove specific contaminants as part of a multistage approach