Laboratory of Wastewater and Environment, Centre for Water Research and Technologies CERTE, BP 273, 8020, Soliman, Tunisia.
National Institute of Applied Sciences and Technology INSAT, University of Carthage, B.P. 676, 1080, Tunis, Tunisia.
Environ Sci Pollut Res Int. 2019 Jul;26(19):19047-19062. doi: 10.1007/s11356-018-3984-9. Epub 2019 Jan 5.
In this study, the Activated Sludge Model No. 3 (ASM3) was applied for the simulation of the removal of organics and nitrogen in a multistage moving bed biofilm reactor (MBBR) used for biological greywater treatment. The data related to the characterization of the greywater were collected over a period of 5 months to be investigated in the model. The reactor showed a high performance for the removal of chemical oxygen demand (COD), dissolved organic carbon (DOC), biological oxygen demand (BOD), ammonia (NH-N), and total nitrogen (TN) with a removal efficiency of 93%, 80.7%, 99%, 89%, and 77%, respectively. The results of modeling showed a good correlation between simulated and experimental concentrations of COD issued from different reactors of the MBBR system. The adaptability of the ASM3 model to fit other parameters such as TN, NH-N, total suspended solids (TSS), and the dissolved oxygen (DO) was also investigated for two selected reactors: reactor (R1) and the reactor (R5). The simulation results showed an acceptable correlation regarding the evolution of the investigated parameters in R1 and R5 and in the effluent except for total nitrogen TN. The adjustment of the stoichiometric parameters led to a satisfactory simulation of TN concentrations.
本研究采用活性污泥模型 No.3（ASM3）对用于生物灰水处理的多级移动床生物膜反应器（MBBR）中有机物和氮的去除进行模拟。在模型中，对为期 5 个月的灰水特性数据进行了收集和调查。该反应器对化学需氧量（COD）、溶解性有机碳（DOC）、生物需氧量（BOD）、氨（NH3-N）和总氮（TN）的去除表现出高的性能，去除效率分别为 93%、80.7%、99%、89%和 77%。模型结果表明，模拟和实验浓度之间具有良好的相关性，这些浓度来自 MBBR 系统的不同反应器。还对两个选定的反应器（R1 和 R5）的其他参数，如 TN、NH3-N、总悬浮固体（TSS）和溶解氧（DO）进行了 ASM3 模型的适应性研究。模拟结果表明，除总氮 TN 外，R1 和 R5 以及出水的研究参数的演变具有可接受的相关性。通过调整化学计量参数，可以对 TN 浓度进行令人满意的模拟。
