Modelling nitrogen removal performance of membrane aerated biofilm reactor by AQUASIM software

2018 International Conference on Air Pollution and Environmental Engineering

生态环境科学

Zhu, Baifeng^1 ; Yang, Junfeng^1 ; Wu, Yufei^1 ; Wang, Hongting^1 ; Guo, Liwei^1 ; Xie, Mengyun^1 ; Zeng, Ming^1 ; Zhang, Zongpeng^2

College of Marine and Environmental Sciences, Tianjin University of Science and Tec1hnology, Tianjin

300457, China^1

Fukai Diwo (Tianjin) Environmental Protection Technology Co. Ltd, Tianjin

300457, China^2

关键词: Ammonia concentrations;    Autotrophic nitrogen removal;    Biological nitrogen removal;    Hydraulic retention time;    Membrane aerated biofilm reactors (MABR);    Microbial communities;    Removal efficiencies;    Removal performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/208/1/012117/pdf
DOI  :  10.1088/1755-1315/208/1/012117

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

A biological nitrogen removal model was established by AQUASIM software to model the autotrophic nitrogen removal performance of membrane aerated biofilm (MAB). The effects of biofilm thickness, hydraulic retention time (HRT) and influent ammonia concentration on microbial community and total nitrogen (TN) removal efficiency were investigated. The results show that the large biofilm thickness of counter-diffusion MAB contributed to the small proportion of AOB and low TN removal efficiency. It is worth noting that the TN removal efficiency reached 84% when the membrane thickness was 500 μm. Regarding with the HRT and influent ammonia nitrogen concentration, the low influent ammonia nitrogen concentration and HRT resulted in the high TN removal efficiency. The influent ammonia nitrogen concentration of 450 mg/L and HRT of 5.5 days contributed to the highest TN removal efficiency of 87%.