Department of Environmental Engineering, University of Michigan, 1351 Beal Avenue, Ann Arbor, MI 48109, USA E-mail:
Water Sci Technol. 2021 Mar;83(6):1418-1428. doi: 10.2166/wst.2021.062.
Mathematical modelling was used to investigate the possibility to use membrane aerated biofilm reactors (MABRs) in a largely anoxic suspended growth bioreactor to produce the nitrate-nitrogen required for heterotrophic denitrification and the growth of denitrifying phosphorus accumulating organisms (DPAOs). The results indicate that such a process can be used to achieve a variety of process objectives. The capture of influent biodegradable organic matter while also achieving significant total inorganic nitrogen (TIN) removal can be achieved with or without use of primary treatment by operation at a relatively short suspended growth solids residence time (SRT). Low effluent TIN concentrations can also be achieved, irrespective of the influent wastewater chemical oxygen demand (COD)/total nitrogen (TN) ratio, with somewhat larger suspended growth SRT. Biological phosphorus and nitrogen removal can also be effectively achieved. Further experimental work is needed to confirm these modelling results.
数学建模被用来研究在一个大缺氧悬浮生长生物反应器中使用膜曝气生物膜反应器（MABR）来生产异养反硝化和生长所需的硝酸盐氮的可能性。结果表明，该工艺可用于实现各种工艺目标。通过在较短的悬浮生长固体停留时间（SRT）下运行，即使不进行初级处理，也可以在去除进水中可生物降解有机物质的同时，实现显著的总无机氮（TIN）去除。无论进水污水化学需氧量（COD）/总氮（TN）比如何，通过稍长的悬浮生长 SRT，也可以实现低的出水 TIN 浓度。生物除磷和脱氮也可以有效实现。需要进一步的实验工作来证实这些建模结果。
