Study on Biological Nitrogen Removal Performance of Aerobic Denitrification Treating Power Plant Wastewater

Abstract:

Enriched domestication in SBR was used to improve the proportion of aerobic denitrifiers in activated sludge, and actual power plant wastewater was treated, which proved the existence of aerobic denitrification. But at the later stage, because of carbon deficiency, aerobic denitrifiers were inhibited and NO₃^--N accumulated. Sodium acetate used as external organic carbon source was added when reaction carried on 3.5 hours to improve the COD/NH₄⁺-N ratio from 6.5 to 10, effluent NO₃^--N concentration was 3.6 mg\L, average removal efficiency of TN was 90%, which could improve the aerobic denitrification performance of whole system effectively.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2589-2593
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2589
• Online since: August 2013
• Authors: Tao Yang*, Pei Ying Wu, Zhan Sheng Zhao, Hua Wei Xu, Gao Zhi Lv
• Keywords: Aerobic Denitrification, Enriched Domestication, Organic Carbon Source

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