Related Experiment Videos
[Experiment study on real-time controlling rules of A/O nitrogen removal process]
Hong Du1, Yong Ma, Yong-Zhen Peng
1School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
Huan Jing Ke Xue= Huanjing Kexue
|October 11, 2005
Summary
Optimized the lab-scale A/O process for wastewater treatment, enhancing nitrogen removal and water quality. This approach also reduced energy consumption and operational costs.
Area of Science:
- Environmental Engineering
- Wastewater Treatment Technologies
- Process Control
Context:
- Conventional A/O (Anaerobic-Oxic) processes face challenges in achieving high nitrogen removal efficiency.
- Operational parameters like dissolved oxygen (DO) and internal recirculation significantly impact treatment performance.
- Synthetic wastewater in a lab plant setting allows for controlled experimentation.
Purpose:
- To optimize the operational control of an A/O process for enhanced nitrogen removal.
- To investigate hierarchical control strategies for ammonia and nitrate management.
- To evaluate the impact of optimized control on effluent quality, energy use, and costs.
Summary:
- Implemented a hierarchical control strategy for an A/O process using synthetic wastewater.
- Manipulated dissolved oxygen (DO) set points and aeration for ammonia control.
- Adjusted internal recirculation and carbon addition for nitrate control within the anoxic zone.
- Supervisory control set set points for conventional controllers.
Impact:
- Achieved improved nitrogen removal efficiency.
- Enhanced overall effluent water quality.
- Demonstrated significant energy savings.
- Reduced operational costs through optimized process control.