A comprehensive mixing strategy at WWTPs influences the secondary treatment process, especially for advanced BNR. This presentation discusses utilizing a strategy where compressed gas mixing enables plants to improve bio-P by limiting oxygen and nitrate from entering anaerobic selectors, while enabling fermentation to leverage embedded carbon. 
A comprehensive mixing strategy at a water reclamation facility (WRF) influences many steps of the secondary treatment process, especially for advanced nutrient removal. This presentation will show how a comprehensive mixing strategy using compressed gas mixing enables plants to improve enhanced biological phosphorus removal (EBPR) by limiting oxygen and nitrate from entering anaerobic selectors, while enabling fermentation to leverage embedded carbon. 
Compressed gas mixing provides uniform bottom-up mixing with full floor coverage across the entire surface area of a reactor. Completely mixed conditions are maintained with short duration, high velocity bursts of pressurized air released through nozzles distributed across the tank floor. Though compressed gas mixing is often mistaken as coarse bubble aeration, the short bursts of air produce a much larger and intermittent bubble with 95% less volume, delivering negligible oxygen to the liquid within the reactor being mixed. 
Influent characterization plays a significant role in the effectiveness of enhanced biological phosphorus removal (EBPR), specifically the availability of readily biodegradable carbon (rbCOD). Many treatment facilities have insufficient or unreliable influent carbon content to support consistent EBPR and low effluent phosphorus concentrations. BioMix-DC Enhanced Anaerobic Mixing System delivers EBPR by optimizing the anaerobic fermentation process with a unique intermittent mixing cycle. BioMix-DC can be applied in both side stream and inline configurations to facilitate fermentation and boost rbCOD production to improve EBPR.