ATUsAero-Stream Eco-NestAero-Stream offers NSF-40 Eco-Nest ATUs for flows of 450 to 1,500 gpd. These systems are based on Bio-Brush technology, utilizing an extended aeration/attached growth bacteria process. Each flow rate is available in one, two and three-tank configurations and can be selected based on the desired treatment level. These systems are designed to fit in locally available precast septic tanks with no special configurations. Achieving removal efficiency of more than 90% for BOD and more than 93% for TSS, these systems are simple and energy efficient. The large surface area of the Bio-Brush avoids system upset from biological or hydraulic
