LUO Yi-han,CHEN Ying,XIE Shu-ting,et al.Effects of Temperature, DO and C/N Ratio on Nitrogen and Phosphorus Removal in SBBR Process[J].China Water & Wastewater,2021,37(9 9):82-89.
Effects of Temperature, DO and C/N Ratio on Nitrogen and Phosphorus Removal in SBBR Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
9 9
Page:
82-89
Column:
Date of publication:
2021-05-01
- Keywords:
- rural domestic sewage; sequencing batch biofilm reactor (SBBR); nitrogen and phosphorus removal; simultaneous nitrification and denitrification (SND)
- Abstract:
- Synthetic rural domestic sewage was treated by a laboratory scale sequencing batch biofilm reactor (SBBR) which was operated in An/O/A (anaerobic/oxic/anoxic) mode in Ningxia, and the effects of temperature, DO and C/N ratio on removal performances of nitrogen and phosphorus were investigated. The SBBR system showed a good simultaneous nitrification and denitrification (SND) performance. When the system was operated at temperature of 30 ℃ and 20 ℃ with C/N ratio of 6 and DO of 1.4-1.6 mg/L, the removal efficiencies of nitrogen and phosphorus were 98.25%, 81.56% and 91.63%, 96.03%, respectively, and the effluent quality could meet the first level B limitation of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). In the process of deep denitrification, there was a secondary phosphorus release phenomenon in the post-anoxic section. By adjusting the concentration of DO, the effluent quality met the first level A limitation of GB 18918-2002 when temperature, C/N ratio and DO were 30 ℃, 6 and 2.9-3.1 mg/L.
Last Update:
2021-05-01