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[Bio-contact oxidation A/O process experiment on Guanting Reservior water]
Xinghai He1, Jiangjin Wu, Lichun Chang
1Beijing Municipal Research Academy of Environmental Protection, Beijing 100037. xinga0011@sina.com
Huan Jing Ke Xue= Huanjing Kexue
|February 11, 2004
Summary
The biological contact A/O process effectively removed chemical oxygen demand (COD) and ammonia nitrogen, improving water quality in Guanting Reservoir. Optimal performance was achieved with specific air supply and low influent ammonia nitrogen loading.
Area of Science:
- Environmental Science
- Water Treatment Engineering
- Microbiology
Context:
- Guanting Reservoir faces contamination challenges from chemical oxygen demand (COD) and ammonia nitrogen.
- Wastewater treatment is crucial for restoring water quality in vital water bodies.
Purpose:
- To evaluate the effectiveness of the biological contact A/O process for water remediation.
- To identify optimal operating parameters for contaminant removal.
Summary:
- The biological contact A/O process demonstrated significant removal of COD and ammonia nitrogen.
- Key operating conditions for effective treatment include air supply flux > 0.1 L/mg and influent ammonia nitrogen loading < 0.08 kg/(m3.d).
- Under these conditions, effluent COD was around 30 mg/L, with ammonia nitrogen removal > 60% and total nitrogen (TN) removal between 1.0% and 31.3%.
Impact:
- The study highlights the biological contact A/O process as a viable method for improving reservoir water quality.
- Influent ammonia nitrogen loading is identified as a critical control parameter for optimizing treatment efficiency.
- Findings provide practical insights for managing and treating water in similar contaminated aquatic environments.