AOA technology-Technology Core-Zhuhai 9TONE Water Service Inc.

AOA technology

Academician Peng Yongzhen's pioneering proposal of "Anaerobic/Aerobic/Hypoxia" (AOA^®) both domestically and internationally ） The treatment process has the advantages of fully utilizing carbon sources, energy conservation and consumption reduction, low infrastructure costs, simple operation and management, and strong shock load resistance. It has great potential for application in the upgrading and energy-saving of sewage treatment plants.

Product Highlights

Significant energy conservation and consumption reduction

Compared to the traditional aerobic stage with over 50% HRT, the AOA^® aerobic stage only accounts for 25-33%, significantly reducing aeration energy consumption and eliminating the need for internal reflux of nitration solution, resulting in a significant decrease in system power consumption.

Efficient utilization of carbon sources

By internally metabolizing and converting organic matter in wastewater into usable carbon sources, deep or ultimate denitrification can be achieved without the need for additional carbon sources, and effluent TN can be stabilized at 5-10mg/L.

Efficient synergy of phosphorus and nitrogen removal

The unique AOA process does not require reflux of digestive fluids, avoiding damage to anaerobic environments and enhancing biological phosphorus removal efficiency; Short range nitrification coupled with endogenous denitrification achieves deep nitrogen removal.

Stable and reliable operation

Strong resistance to impact loads, simple operation and management, especially suitable for upgrading and in-situ expansion projects of existing sewage treatment plants, with both economic and environmental benefits.

Product advantages

Energy conservation and carbon reduction

Normally, anaerobic/aerobic/anoxic volumes and HRT ratios A: O: A=1:1:2, while aerobic HRT only accounts for 1/4, saving energy and reducing carbon emissions

Non nitrifying liquid internal circulation

Non nitrifying liquid internal circulation, energy-saving; And it avoids damaging the anaerobic environment, which is conducive to phosphorus removal

Realize deep or extreme denitrification

The effluent from the anoxic stage can achieve deep or extreme denitrification without an external carbon source