Transcription of Activated Sludge Microbiology Problems and Their Control
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Activated Sludge Microbiology Problems and Their Control
1 Presented at the 20th Annual USEPA National Operator Trainers Conference Buffalo, NY, June 8, 2003. Activated Sludge Microbiology Problems AND Their Control Michael Richard, Sear-Brown Fort Collins, CO CONTENTS I. Introduction II. Microbiology Problems and Their Causes 1. Poor Floc Formation, Pin Floc and Dispersed Growth Problems 2. Toxicity 3. Nitrification and Denitrification Problems 4. Nutrient Deficiency and Polysaccharide Bulking and Foaming 5. Zoogloeal Bulking and Foaming 6. Filamentous Bulking 7. Filamentous Foaming III. Practical Control Methods for Filamentous Bulking and Foaming 1.
troubleshooting the activated sludge process is based on microscopic examination and oxygen uptake rate (OUR) testing to determine the basic cause of the problem or upset and whether it is microbiological in nature. These methods are easy, fast and inexpensive compared to other approaches, and are generally understandable and accepted.
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