Isolation, identification and characterisation of filamentous and floc‐forming bacteria from activated sludge flocs

Publisher Website
Google Scholar
Abstract
A total of twelve different bacterial species capable of producing exopolysaccharide in liquid media, and three species which exhibited filamentous growth, were isolated from activated sludge flocs. Exopolysaccharide producers were only isolated in media for which nitrogen or phosphorus was growth limiting, and not from carbon limited medium. The main biochemical characteristics of both the floc‐forming and filamentous bacteria were determined and exopolysaccharide from isolates was purified and characterised. Isolates from nitrogen limited media appeared the most probable contributors to exopolysaccharides found in activated sludge flocs.