The Problem: A Rendering Facility had experienced a failure of an existing Rotating Biological Contactor (RBC) system due to a rotating assembly bearing and shaft failure. As a result, the existing lagoons became overloaded with ammonia from the anaerobic treatment process.
bioprocessH2O's Solution: bioprocessH2O was selected to provide a bioFAS™ Moving Bed Biofilm Reactor (MBBR) System equipment package to retrofit and upgrade the existing RBC basins into a two‐stage bioFAS™ MBBR process for the reduction of BOD5 and nitrification of ammonia. The first phase of the project involved an emergency response to retrofit the existing RBC basin within four weeks and have the system operational. Then for Phase 2, bioprocessH2O supplied a fully automated electrical control panel equipped with a PLC controller, VFD drives for the blowers and a set of automated control valves and dissolved oxygen (DO) sensors for an automated DO control system.
Status/Results: Within a period of 7 days, the bioFAS™ MBBR system was able to nitrify the ammonia for the removal of 120 lbs NH4 per day. Within a period of 14 days, the bioFAS™ MBBR system was able to nitrifying at a rate of 160 lbs NH4 per day. At a current flow rate of 43,500 GPD, the bioFAS™ MBBR System meets and/or exceeds all expectations of the nitrifying biological treatment process.
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