A2O/AO Process
Smart. Efficient. Sustainable.
The Future of Advanced Wastewater Treatment
Advanced Activated Sludge Process (A2O/AO) for Superior Nitrogen & Phosphorus RemovalThe A2O/AO Process (Anaerobic + Anoxic + Aerobic) is an innovative three-stage wastewater treatment method designed to efficiently remove nitrogen and phosphorus while minimizing energy consumption. By incorporating cutting-edge aeration and recirculation technology, this process optimizes biological nutrient removal (BNR) while reducing chemical dependency and operational costs.
What makes the A2O/AO Process advanced?
How A2O/AO works: A Three-stage process
Why choose the A2O/AO process?
Perfect for various wastewater applications
What makes the A2O/AO process advanced?
High-Efficiency Aeration: Triton-type aerators provide deeper mixing, reaching depths of up to 10m.
Optimized Footprint: Deeper tanks reduce space requirements, making it ideal for constrained areas.
Energy-Efficient Recirculation: Integrated IR gates eliminate the need for power-intensive submersible IR pumps.
Chemical-Free Phosphorus Removal: Achieves complete BNR removal without chemical dosing, unlike traditional oxidation ditch and SBR systems.
Superior BOD Removal: 95-98% efficiency, ensuring high-quality effluent discharge.
Lower Hydraulic Retention Times (HRTs): More efficient than conventional treatment methods.
Cost-Effective Operation & Maintenance: Lower energy requirements and simple operation reduce overall costs.
Customizable Tank Designs: Engineered to treat domestic, municipal, and industrial effluents based on specific characteristics.
How A2O/AO works: A Three-stage process
Anaerobic Zone: Phosphorus removal through biological uptake.
Anoxic Zone: Nitrogen removal via denitrification.
Aerobic (Oxic) Zone: Final breakdown of organic matter and nitrification of ammonia.
The process utilizes internal recirculation (IR) gates to maintain optimal nitrogen removal, avoiding the high power consumption of traditional IR pumps. This simple yet highly effective design enhances treatment efficiency while minimizing environmental impact.
Why choose the A2O/AO process?
- Compact, High-Performance Treatment – Achieves exceptional nutrient removal with a smaller footprint.
- Lower Energy Costs – Eliminates heavy-duty IR pumps and reduces aeration power consumption.
- Chemical-Free Operation – No need for phosphorus removal chemicals, unlike traditional systems.
- High Treatment Efficiency – Optimized biological nutrient removal for superior effluent quality.
- Reliable & Easy to Operate – Simple design with minimal maintenance requirements.
Perfect for various wastewater applications
Municipal & Domestic Wastewater Treatment
Industrial Effluents (Food, Beverage, Textile, Petrochemical, and More)
Eco-Friendly Wastewater Management Solutions
Upgrade Your Wastewater Treatment with A2O/AO
By integrating the A2O/AO process into your wastewater treatment system, you gain superior nitrogen and phosphorus removal, reduced energy costs, and a more sustainable approach to wastewater management.