Troubleshooting Sequencing Batch Reactors (SBRs)



Troubleshooting Sequencing Batch Reactors (SBRs)

This class describes the conditions and bacterial activities that occur during fill phase (static, mixed and aerated), react phase, settle phase and decant phase of an SBR. Nitrification and denitrification in an SBR are described as well as biological and chemical phosphorus removal. The development of aerobic (oxic), anoxic and anaerobic/fermentative conditions are presented, and the techniques for monitoring, troubleshooting and adjusting phase times to improve oxic, anoxic and anaerobic/fermentative conditions are offered. These techniques include periodic sampling for values and changes in values for alkalinity/pH, dissolved oxygen, ammonia, nitrite, nitrate, reactive (orthophosphate) phosphorus, BOD-to-COD ratio and oxidation-reduction potential (ORP).

3 TCH (Wastewater)

Elijah Lemieux (Vermont Rural Water Association)

Michael Gerardi


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