Evaluation of different structures of moving bed biofilm reactors (MBBR) for synthetic wastewater treatment

8th International Conference on Environment Science and Engineering

生态环境科学

Yang, L.^1 ; Li, H.Q.^1 ; Yang, P.^1

Department of Environment Science and Engineering, School of Architecture and Environment, Sichuan University, 610065, China^1

关键词: Different structure;    Moving bed biofilm reactors;    Removal rate;    Synthetic waste water;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/167/1/012009/pdf
DOI  :  10.1088/1755-1315/167/1/012009

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Performance of three different structures of moving bed biofilm reactors (MBBR) treating synthetic wastewater was evaluated. The three systems were operated under the same conditions of dissolved oxygen (DO) 3 mg/L at 26 °C. The effluent of chemical oxygen demand (COD) decreased from 111.6 mg/L in reactor 1 (R1), 128.8 mg/L in reactor 2 (R2), and 154.5 mg/L in reactor 3 (R3), to less than 100 mg/L, respectively, with concentration of influent NH4 +-N rising from 30 mg/L to 50 mg/L. The concentration of effluent NH4 +-N for R1, R2 and R3 were close to 2 mg/L, 4 mg/L and 5 mg/L, respectively. The highest TN removal rate in R1 achieved average 84.4 %, which was 6.0 % and 9.7 % higher than those of R2 and R3, respectively. R1 with two baffles in it exhibited well fluidization and abundant microbes growing on carrier.