ActiveFlow Tubofuro® wastewater treatment plants (WWTPs) are continuous-flow biological treatment systems based on the activated sludge process with extended aeration. This model includes a first compartment that operates as an aerated biological reactor, followed by a second compartment for settling. ActiveFlow Tubofuro® WWTPs include a blower, a fine-bubble aeration system, a sludge recirculation pump, an electrical control panel, and a screen and rake.