Studies on the Causes and Prevention of Bulking Sludge in Germany

The development of bulking sludge causes operational problems in about half of the activated sludge plants. Investigations in Germany describing a large number of industrial and operational parameters from more than 100 activated sludge plants, as well as technical research on prevention and control measures, contribute to an understanding of this problem and give information about possible causes and means to prevent bulking sludge.