Related Experiment Video
Updated: Aug 11, 2026

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
Published on: October 7, 2020
Biological phosphorus and nitrogen removal with biological aerated filter using denitrifying phosphorus accumulating
1Dowha Consulting Engineering Co., LTD, Sinsa-dong, Gangnam-gu, 640-6 Seoul, South Korea.
Abstract:
In order to accomplish the biological nutrient removal with a weak sewage at low temperature, a hybrid process consisted of anoxic denitrifying phosphorus accumulating organism (dPAO) and nitrifying biological aerated filter (BAF) was studied in both lab and field pilot plants with weak sewage. The biofilm BAF was used as a post-nitrification process that provided sufficient nitrate to suspended growth dPAO. The anoxic/BAF configuration could remove nitrogen and phosphorus appreciably compared to other BNR systems. The enhanced biological phosphorus removal (EBPR) was mainly occurred in anoxic zone of suspended growth reactor. It has been found that P removal efficiency of dPAO was enhanced with an addition of a short oxic zone in suspended reactors compared to that of without oxic zone. However, the degree of aerobic P uptake in oxic zone was far lower than anoxic P uptake. The operating results of field plant indicated that dPAO/BAF configuration successfully reduced the adverse temperature effects at lower than 15 degrees C.
Related Concept Videos
Microbial Wastewater Treatment
Biological Treatment of Effluent and Waste Water
Inorganic Nitrogen Assimilation
Environmental Applications of Microorganisms
Bioremediation
Bioreactor Design and Operational System

