SOLIDS RETENTION IN ANAEROBIC WASTE TREATMENT SYSTEMS

Abstract

Fifty years have passed since the first application of separate sludge di gestion to waste treatment. During this period numerous reports have con tributed to the knowledge of anaerobic waste treatment systems. In recent years, primarily since 1960, more re search attention has been directed to ward the microbial population dy namics of anaerobic systems (1) (2) (3). This paper presents the results of a laboratory study into the biolog ical solids retention time aspects of anaerobic waste treatment.