The most common activated sludge operating problems causing poor plant performance are related to solids separation. Especially common are bulking and foaming. Without a proper scientific foundation to support the efforts of wastewater treatment plant management, many attempts to thwart bulking and foaming have failed.Manual on Solving Activated Sludge Bulking, Foaming, and Other Solids Separation Problems provides the critical scientific and practical underpinnings needed to understand and combat these problems. The third edition of this flagship text is a comprehensive, concise guide to the microbiological and technical aspects of controlling all types of solid separation problems.The scientific theory is applied to real-world scenarios, greatly increasing the number of real-world examples of successful control methods. New information is also included on filamentous organism growth and its application in the control of sludge bulking and foaming. Now plant operators, regulators and wastewater engineers have a complete guide for battling these formidable design and operating problems.

Table of Contents

SOLIDS SEPARATION PROBLEMS Introduction Solids Separation Problems The Activated Sludge Floc Solids Separation Problems In Terms Of Floc Structure Differentiation between Microbial And Process-Related Solids Separation Problems METHODS Introduction Microscopic Examination Methods Physical and Chemical Methods RESULTS AND APPLICATION OF THE MICROSCOPIC EXAMINATION OF ACTIVATED SLUDGE Introduction Filament Counting Results of Filamentous Organism "Identification" in Activated Sludge CONTROL OF ACTIVATED SLUDGE BULKING AND OTHER SETTLING PROBLEMS Introduction General Approach Rapid, Non-Specific Bulking Control Methods Specific Methods of Bulking Control High Effluent SS Due to Clarification Problems ACTIVATED SLUDGE FOAMING Activated Sludge Foaming Nocardioform Foaming Nocardioform Control Microthrix parvicella Anaerobic Digester Foaming BIBLIOGRAPHY AND REFERENCES