State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China.
Environ Sci Pollut Res Int. 2023 Oct;30(49):107661-107672. doi: 10.1007/s11356-023-29943-2. Epub 2023 Sep 22.
Sequencing batch biofilter granular reactor (SBBGR) is a promising wastewater treatment technology owing to its low sludge yield and good toxicity tolerance. However, little attention has been paid to the formation process and mechanism of aerobic granular sludge in SBBGR. This study systematically investigated the formation process and mechanism of aerobic granular sludge in an SBBGR to provide a theoretical basis for optimizing the culture of aerobic granular sludge. Aerobic granular sludge with good performance was successfully cultivated after 40 days of incubation using synthetic wastewater as feed: the mixed liquid suspended solids and mixed liquor volatile suspended solids increased from 3.85 and 1.85 g/L to 31.38 and 24.74 g/L respectively, and the COD, TN, and TP removal efficiencies were 91.21%, 84.99%, and 58.14%, respectively. The experimental results showed that Amoebacteria and Bacteroides played an important role in the formation of aerobic granular sludge, filamentous bacteria acted as a three-dimensional skeleton surrounded by filling bacilli and rod-shaped bacteria, and proteins played a dominant role in promoting granulation during the culture process.
序批式生物滤池颗粒反应器（SBBGR）因其产泥量低、耐毒性好而成为一种很有前途的废水处理技术。然而，对于 SBBGR 中好氧颗粒污泥的形成过程和机理，人们关注较少。本研究系统地研究了 SBBGR 中好氧颗粒污泥的形成过程和机理，为优化好氧颗粒污泥的培养提供了理论依据。使用合成废水作为进料，经过 40 天的培养，成功地培养出了性能良好的好氧颗粒污泥：混合液悬浮固体和混合液挥发性悬浮固体分别从 3.85 和 1.85 g/L 增加到 31.38 和 24.74 g/L，COD、TN 和 TP 的去除率分别为 91.21%、84.99%和 58.14%。实验结果表明，变形菌门和拟杆菌门在好氧颗粒污泥的形成过程中起着重要作用，丝状菌作为三维骨架，被填充的杆菌和杆状菌包围，在培养过程中蛋白质在促进颗粒化方面起主导作用。
