Optimizing Aeration For Nutrient Removal: A Deep Dive Into Jet Aeration's Role

Biological nutrient removal (BNR) requires a careful balance of aeration and mixing to drive nitrification, denitrification, and phosphorus removal. Traditional fine-bubble diffuser systems often struggle with variable loading, energy inefficiency, and inconsistent oxygen transfer. Jet aeration provides a more robust and flexible approach. By using recirculated mixed liquor to generate high-energy jets, the system delivers intense hydraulic mixing and superior surface renewal, preventing bubble fouling and increasing oxygen transfer efficiency. These characteristics produce high alpha factors, especially in challenging industrial wastewater, enabling lower blower power and more effective treatment. Jet aeration also enhances BNR performance across multiple zones: aerobic operation supports ammonia oxidation, while anoxic mixing without aeration enables energy-saving denitrification. In SBRs, jets help cultivate phosphorus-accumulating organisms by supporting feast-famine cycling. Equipped with variable frequency drives and automated DO or ammonia control, the system adapts to fluctuating conditions while reducing energy consumption. With long equipment life and minimal maintenance requirements, jet aeration offers utilities a durable, efficient, and high-performance solution for modern nutrient removal.