Transcription of Activated Sludge Microbiology Problems and Their Control
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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.
Here, no flocs develop and biomass settling does not occur, resulting in a very turbid effluent. The correct remedial action for a dispersed growth problem is a reduction in the F/M of the system, usually done by raising the MLSS concentration. Dispersed growth problems often occur after a toxicity or hydraulic
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