Mahto Kumari Uma, Das Surajit
Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela 769 008, Odisha, India.
Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela 769 008, Odisha, India.
Bioresour Technol. 2022 Feb;345:126476. doi: 10.1016/j.biortech.2021.126476. Epub 2021 Dec 2.
Among the several biofilm-based bioreactors, moving bed biofilm reactors (MBBR) have been extensively used for wastewater treatment due to low operational costs, technical feasibility, and stability. Biofilm forming strains, e.g., Stenotrophomonas maltophila DQ01, achieved 94.21% simultaneous nitrification and denitrification (SND) and 94.43% removal of total nitrogen (TN) at a cycle time of 7 h, and a biofilm consortium consisting of Chryseobacteriumsp. andRhodobactersp. achieved 86.8% removal of total organic carbon (TOC) at hydraulic retention time (HRT) of 24 h using lab-scale MBBR. Modifications in the surface properties of the biocarrier materials achieved 99.5 ± 1.1% chemical oxygen demand (COD) and 93.6 ± 2.3% NH-N removal, significantly higher than the conventional commercial carrier. This review article summarizes the application of MBBR technology for wastewater treatment. The importance of bacterial biofilm and extracellular polymeric substances (EPS), anammox-n-DAMO coupled processes, and carrier surface modifications in MBBR technology have also been discussed.
在几种基于生物膜的生物反应器中，移动床生物膜反应器（MBBR）因其运行成本低、技术可行性高和稳定性好而被广泛用于废水处理。形成生物膜的菌株，如嗜麦芽窄食单胞菌DQ01，在7小时的循环时间内实现了94.21%的同步硝化反硝化（SND）和94.43%的总氮（TN）去除率，并且由金黄杆菌属和红杆菌属组成的生物膜群落使用实验室规模的MBBR在24小时的水力停留时间（HRT）下实现了86.8%的总有机碳（TOC）去除率。生物载体材料表面性质的改性实现了99.5±1.1%的化学需氧量（COD）去除率和93.6±2.3%的氨氮去除率，显著高于传统商业载体。这篇综述文章总结了MBBR技术在废水处理中的应用。还讨论了细菌生物膜和胞外聚合物（EPS）、厌氧氨氧化-n-双功能厌氧甲烷氧化耦合过程以及MBBR技术中载体表面改性的重要性。
