AO vs. A²O Wastewater Treatment: Which One Delivers Better Nitrogen & Phosphorus Removal?
AO vs. A²O Wastewater Treatment Processes: Key Differences Explained
Both the AO (Anoxic–Oxic) and A²O (Anaerobic–Anoxic–Oxic) processes are widely used biological wastewater treatment technologies. While they share similarities, their design, functionality, and treat……



