Tubofuro® SBR wastewater treatment plants (WWTPs) are activated sludge biological treatment systems operating in extended aeration mode, in which treatment takes place sequentially in a single reactor. This model is particularly advantageous for small systems (< 3,000 PE), as it effectively absorbs the disturbances introduced into secondary settling. Tubofuro® SBR WWTPs include a blower, a fine-bubble aeration system, a treated-water extraction pump, an electrical control panel, and a screen and rake.