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.
Toxic wastes generally do not favor filaments directly (except in the case of H2S); rather, upset conditions allow filaments to proliferate. For example, bulking bySphaerotilus natans frequently follows a toxic upset due to a high F/M condition. Here the "true" F/M value may be
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