Recently lakes, swamps and suburban rivers of cities have become growingly polluted according to various kinds of waste water drainage. For domestic and industrial waters much call has been made on advanced water treatment techniques to where more adsorption operation is employed by granular and powdered activated carbon for removal of organic substances, color, odor, etc.We already succeeded in a promising result from two experiments at Kashiwai Water Works of Chiba Prefecture and Murano of Osaka Prefecture using a pitch-based activated carbon fiber (ACF). This paper deals with the further development that the pitch-based ACF has been reformed and the development of higher performance ACF ventured on.
