a completely integrated and automated apparatus by which liquid sewage sludge from any sewage or waste treatment plant may be processed into a completely dry , pelletized and sterilized product of an organic nature containing nutrients valuable for the support of plant life . the apparatus involves one completely integrated and automated unit together with a control center by means of which electric circuits program each component of the apparatus to automatically regulate the operation of each component , so that no labor or other manpower is required in the operation , except for observation , lubrication , maintenance and repair of the various motors and machineries involved .