||Thermal Regeneration of Spent Powdered Carbon using Fluidized-Bed and Transport Reactors.
Ber, Edward L. ;
Villier, Roland V. ;
Mass, Arthur N. ;
Winslo, Lawrence A. ;
||Robert A. Taft Water Research Center, Cincinnati, Ohio.
( Activated carbon treatment ;
Sewage treatment) ;
( Activated carbon ;
Fluidized bed processes ;
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Adsorption on powdered activated carbon has been proven to be a feasible method for removing the bulk of the dissolved organic materials from a municipal secondary effluent. The cost of the carbon is such that it must be regenerated and reused. A transport reactor and a fluidized-bed regeneration furnace were evaluated at the Federal Water Quality Administration's pilot plant at Lebanon, Ohio, regnerating carbon from a 10-gal./min. adsorption system. The carbon was regenerated to near virgin capacity by both furnaces. Physical losses in both systems were near 15%. Operating difficulties with the transport reactor furnace led to the selection of the fluidized-bed furnace for further development. (Author)