Mathematical modeling and experimental validation of a novel Circulating Oxygenation Biofilm Equipment (COBE) for the management of decentralized wastewater treatment,Journal of Environmental Management

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Mathematical modeling and experimental validation of a novel Circulating Oxygenation Biofilm Equipment (COBE) for the management of decentralized wastewater treatment
Journal of Environmental Management ( IF 8.0 ) Pub Date : 2023-12-10 , DOI: 10.1016/j.jenvman.2023.119792
Yu Fan ₁ , Kuangwei Shi ₁ , Chengwen Wang ₁

Affiliation

The difficulties of management were the key barriers to the promotion of decentralized wastewater treatment in remote areas. In this study, a novel decentralized Circulating Oxygenation Biofilm Equipment (COBE) and its remote management potential based on mathematical modeling were investigated. The COBE is an integrated biofilm reactor that employs drippage aeration and enables oxygenation, filtration, and effluent processes to be controlled, thus providing convenience for controlling. The model for the COBE describing drippage aeration, comprehensive ammonia-related microbes, and corncob carbon source release process was studied to uncover the impacts of operational conditions on decentralized wastewater treatment in the COBE system. The equipment regulation parameter (circulating oxygenation ratio) was found to be linearly correlated with the oxygen mass transfer coefficient. This discovery enabled highly accurate prediction of COD, NH4–N, and TN concentrations in the equipment effluent at various scenarios. The comprehensive ammonia oxidation biological model indicated that the model could duplicate the actual situation of the succession of ammonia metabolizing related microorganisms. Comammox and ammonia-oxidizing archaea (AOA) dominated ammonia metabolism in this equipment rather than conventional ammonium-oxidizing bacteria (AOB). This study could contribute to the Internet of Things system construction of decentralized wastewater treatment equipment, and provide a solution for timely decentralized equipment management in remote areas.

中文翻译：

用于管理分散式废水处理的新型循环氧合生物膜设备（COBE）的数学建模和实验验证

管理困难是在偏远地区推广分散式废水处理的主要障碍。在本研究中，研究了一种基于数学模型的新型分散式循环氧合生物膜设备（COBE）及其远程管理潜力。COBE 是一种集成生物膜反应器，采用滴灌曝气，能够控制氧化、过滤和流出过程，从而为控制提供便利。研究了描述滴灌曝气、综合氨相关微生物和玉米芯碳源释放过程的 COBE 模型，以揭示操作条件对 COBE 系统中分散废水处理的影响。发现设备调节参数（循环氧合比）与氧传质系数呈线性相关。这一发现能够高度准确地预测各种情况下设备流出物中的 COD、NH4-N 和 TN 浓度。综合氨氧化生物模型表明，该模型可以复制氨代谢相关微生物演替的实际情况。在该设备中，共氨氧化菌和氨氧化古菌（AOA）主导氨代谢，而不是传统的铵氧化菌（AOB）。本研究有助于分散式污水处理设备的物联网系统构建，为偏远地区及时分散式设备管理提供解决方案。

更新日期：2023-12-10

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