Extended aeration reinforced concrete systems are classic and reliable biological treatment facilities with high hydraulic stability and large volumes, used in the treatment of high-flow domestic wastewater or wastewater from large-scale industrial plants. 

 The main characteristic of these systems is that the aeration time of the wastewater and activated sludge in the biological basin (hydraulic retention time and sludge age) is kept much longer compared to standard activated sludge systems. 

 Thanks to this long duration, the microorganisms in the system not only consume the organic pollutants (carbonaceous compounds) in the water, but also digest themselves (endogenous phase), minimizing the amount of waste sludge produced. 

 Moreover, the system also performs nitrogen removal (nitrification and denitrification) processes with the same stability. 

 These facilities, which are built on-site as reinforced concrete, are the most ideal solution especially for organized industrial zones, municipalities, large factories, and densely populated residential areas. 

 The system consists of an equalization basin, an extended aeration biological basin, a final settling basin, and sludge dewatering units. 

 Thanks to the large basin volumes, the facility shows tremendous flexibility and resistance against sudden flow fluctuations, shock pollution loads, and toxic inputs; 

 system balance is not easily disrupted. In the aeration basins, the oxygen and perfect mixing required by the wastewater are provided by using highly efficient surface aerators (whip/dish type) or bottom diffuser systems. 

 Designed by our expert engineering team with flawlessly executed hydraulic calculations, our extended aeration reinforced concrete systems offer uninterrupted treatment service in full compliance with legal regulations with minimum operational risk for decades.