Assessing the performance of a sequencing batch biofilm reactor bioaugmented with P. stutzeri strain XL-2 treating ammonium-rich wastewater

作者：Zhao, Bin^*; Ran, Xiao Chuan; Tian, Meng; An, Qiang; Guo, Jin Song

来源：Bioresource Technology, 2018, 270: 70-79.

DOI：10.1016/j.biortech.2018.09.015

• Bioaugmentation
• Heterotrophic nitrification and aerobic denitrification
• Biofilm formation
• Bioreactor
• Pseudomonas stutzeri

Pseudomonas stutzeri XL-2, with the capability of heterotrophic nitrification-aerobic denitrification and biofilm-forming, was applied in a sequencing batch biofilm reactor (SBBR) for bioaugmented treatment of ammonium-rich wastewater. The bioaugmented system SBBR 1 showed a rapid development of biofilm and relatively shorter time for biofilm hanging compared with the control system SBBR 2 without strain XL-2 inoculation. At different NH4+-N loads of 100, 200 and 300 mg/L, the effluent TN removal ratios ranged in 88.7-97.0%, 85.1-93.5% and 87.8-92.5% respectively in SBBR 1, while only ranged in 77.4-85.4%, 77.1-84.3% and 79.8-85.0% in SBBR 2. Less accumulation of NO2--N and NO3--N resulted in the better performance on TN removal in SBBR 1. Microbial community structure analysis revealed that strain XL-2 successfully proliferated in SBBR 1 and contributed to the less accumulation of NO2--N and NO3--N as well as biofilm formation.

• 出版日期2018-12
• 单位重庆大学