颗粒大小决定了用于废水处理的微藻-细菌颗粒污泥的特性和性能。
Granule size informs the characteristics and performance of microalgal-bacterial granular sludge for wastewater treatment.
机构信息
Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore.
Department of Water and Wastewater Engineering, Wuhan University of Science and Technology, Wuhan 430065, China.
出版信息
Bioresour Technol. 2022 Feb;346:126649. doi: 10.1016/j.biortech.2021.126649. Epub 2021 Dec 30.
In this study, four groups of microalgal-bacterial granules with averaged diameters of about 356, 760, 951 and 1,444 µm were used to investigate their characteristics and performance in treating wastewater. A strong correlation between extracellular polymeric substances of microalgal-bacterial granules and the granule size was observed. Moreover, granule size showed a positive effect on the specific organics removal rate, but being negative for ammonium and phosphorus removal. It appeared that granule size could be used as a useful index to reflect the synergistic interactions between microalgae and bacteria in terms of the abundances, distributions and functional species in the microalgal-bacterial granules. This study is expected to offer new insights into the size-dependent performances of microalgal-bacterial granules for wastewater treatment.
在这项研究中，使用了四组平均直径约为 356、760、951 和 1444μm 的微藻-细菌颗粒，以研究它们在处理废水方面的特性和性能。观察到微藻-细菌颗粒的胞外聚合物与颗粒大小之间存在很强的相关性。此外，颗粒大小对特定有机物去除率有积极影响，但对氨氮和磷的去除有负面影响。似乎可以将颗粒大小用作反映微藻和细菌在微藻-细菌颗粒中的丰度、分布和功能物种方面协同相互作用的有用指标。这项研究有望为微藻-细菌颗粒处理废水的尺寸依赖性性能提供新的见解。
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