Article citationsMore>>

Chang, M.D., Liang, B.R., Zhang, K., Wang, Y.Z., Jin, D.T., Zhang, Q.J., Hao, L.Y. and Zhu, T. (2022) Simultaneous Shortcut Nitrification and Denitrification in a Hybrid Membrane Aerated Biofilms Reactor (H-MBfR) for Nitrogen Removal from Low COD/N Wastewater. Water Research, 211, Article ID: 118027.
https://doi.org/10.1016/j.watres.2021.118027

has been cited by the following article:

• TITLE: Effects of Aeration Rates and Patterns on Shortcut Nitrification and Denitrification

  AUTHORS: Ali Ibrah Landi, Jun Lu

  KEYWORDS: Wastewater Treatment, SBR, Partial Nitrification/Denitrification, Intermittent Aeration, Aeration Rate, Aeration Pattern, Total Nitrogen (TN) Removal

  JOURNAL NAME: Journal of Environmental Protection, Vol.13 No.9, September 27, 2022

  ABSTRACT: The effects of aeration rates and aeration patterns on the oxidation of ammonia-nitrogen into nitrite were investigated. The influent high ammonia-nitrogen synthetic wastewater resembled to those of the catalytic process of the petrochemical refinery. The method involved the biological shortcut nitrification and denitrification lab-scale’s sequencing batch reactor (SBR) process based on intermittent aerations and aeration patterns. All the operations were carried out in a 20 L working volume SBR bioreactor, and the influent synthetic wastewater’s concentration was always 1000 mg/L ammonia-nitrogen NH4-N concentration at a C/N (carbon/nitrogen) ratio of 2.5:1. Effective shortcut nitrification to nitrite was registered at 1.1 mg-O2/L (i.e. 9 L-air/min) with 99.1% nitrification efficiency, 99.0% nitritation rate and 2.6 mg-NO3--N/L nitrate concentration. The best results with 99.3% nitrification efficiency were recorded when operating at 1.4 mg-O2/L (i.e. 12 L-air/min). According to these experiments, it results that the nitrite accumulation rate was related to aeration rate and cycle’s duration. However, at 1.7 mg-O2/L (i.e. 15 L-air/min), the system was limited by an increase in nitrate concentration with more than 5 mg/L which could be a point of reverse to conventional nitrification. The best total nitrogen (TN) removal was about 71.5%.