This manual discusses and reviews activated carbon adsorption principles, pilot plant techniques, general and detailed process design considerations, costs, operational requirements, and describes existing or planned facilities. This manual does not cover in detail wastewater treatment processes which normally precede or follow carbon adsorption, except to note the extent to which these processes affect the carbon adsorption system. Information in this manual pertains to the application of granular activated carbon systems to municipal wastewater treatment, as opposed to powdered carbon systems, because the experience with granular carbon adsorption and regeneration systems is greater than with the emerging powdered carbon technology.