Lu Duowei, Bai Hao, Liao Baoqiang
Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada.
Department of Mechanical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada.
Membranes (Basel). 2022 Apr 12;12(4):418. doi: 10.3390/membranes12040418.
The concept of thermophilic membrane-aerated biofilm reactor (ThMABR) is studied by modeling. This concept combines the advantages and overcomes the disadvantages of conventional MABR and thermophilic aerobic biological treatment and has great potential to develop a new type of ultra-compact, highly efficient bioreactor for high-strength wastewater and waste gas treatments. Mathematical modeling was conducted to investigate the impact of temperature (mesophilic vs. thermophilic) and oxygen partial pressure on oxygen and substrate concentration profiles, membrane-biofilm interfacial oxygen concentration, oxygen penetration distance, and oxygen and substrate fluxes into biofilms. The general trend of oxygen transfer and substrate flux into biofilm between ThAnMBR and MMABR was verified by the experimental results in the literature. The results from modeling studies indicate that the ThMABR has significant advantages over the conventional mesophilic MABR in terms of improved oxygen and pollutant flux into biofilms and biodegradation rates, and an optimal biofilm thickness exists for maximum oxygen and substrate fluxes into the biofilm.
通过建模研究了嗜热膜曝气生物膜反应器（ThMABR）的概念。该概念结合了传统膜曝气生物膜反应器（MABR）和嗜热好氧生物处理的优点并克服了其缺点，在开发用于处理高强度废水和废气的新型超紧凑型高效生物反应器方面具有巨大潜力。进行了数学建模，以研究温度（中温与嗜热）和氧分压对氧和底物浓度分布、膜 - 生物膜界面氧浓度、氧渗透距离以及氧和底物进入生物膜的通量的影响。文献中的实验结果验证了ThAnMBR和MMABR之间氧转移和底物通量进入生物膜的总体趋势。建模研究结果表明，ThMABR在改善氧和污染物进入生物膜的通量以及生物降解速率方面比传统中温MABR具有显著优势，并且存在一个最佳生物膜厚度，可实现进入生物膜的氧和底物通量最大化。
