Low-DO-AOA Reactor 16S rRNA Sequencing

This study aimed to achieve an energy and cost-saving biological nitrogen removal process in treating tropical wastewater with low soluble COD/TN (<4). An anoxic-oxic (AO) process was incorporated with low-DO nitrification to reduce energy consumption whereas sbCOD was utilized for denitrification to save operating cost. A lab-scale reactor was operated to study the long-term effect of low-DO condition on nitrification performance and utilization of sbCOD on denitrification performance. In addition, 16S rRNA amplicon sequencing were performed to investigate the functional microbial community structure of the sludge in both the processes.