Spatiotemporal distribution and dynamic variation of bacterial communities in granular activated carbon-ultrafiltration advanced treatment process
CAI Guangqiang1,2,3,, ZHANG Jinsong1,2,3, LIU Tongzhou1,2,,, YOU Zuoliang3, ZHOU Chang4 1.School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China 2.Key Laboratory of Water Resource Utilization and Environmental Pollution Control in Shenzhen, Shenzhen 518055, China 3.Shenzhen Water Affairs (Group) Co. Ltd., Shenzhen 518031, China 4.School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
Abstract:The bacterial communities in a granular activated GAC-UF advanced treatment process drinking water plant in the south of China were analyzed using NovaSeq6000 high throughput sequencing technology in summer and winter, in order to gain insight into the distribution and variation of those bacterial communities in this process. The results showed that the water quality indicators such as turbidity and total plate count in finished water all met the standards for drinking water quality GB 5749-2006. The bacterial community diversities were removed by the coagulation sedimentation, UF and disinfection, and the removal rates in summer were significantly higher than those in winter. The dominant phyla in both summer and winter were Proteobacteria, Actinobacteria, etc., but significant differences in bacterial community composition were found at the genus level. Additionally, Mycobacterium and Pseudomonas were the main potential pathogenic genera, and their total proportion in core microorganisms was 5.56%. In a word, the results provided evidence of distinct spatiotemporal variation of bacterial communities in the GAC-UF advanced treatment process, and contributed to microbiological safety assurance of drinking water. Key words:drinking water/ granular activated carbon-ultrafiltration advanced treatment process/ bacterial community/ spatiotemporal distribution/ dynamic variation.
图1GAC-UF深度处理工艺流程图 Figure1.Schematic diagram of GAC-UF advanced treatment process
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1.School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China 2.Key Laboratory of Water Resource Utilization and Environmental Pollution Control in Shenzhen, Shenzhen 518055, China 3.Shenzhen Water Affairs (Group) Co. Ltd., Shenzhen 518031, China 4.School of Civil Engineering, Guangzhou University, Guangzhou 510006, China Received Date: 2020-08-17 Accepted Date: 2020-10-23 Available Online: 2021-04-23 Keywords:drinking water/ granular activated carbon-ultrafiltration advanced treatment process/ bacterial community/ spatiotemporal distribution/ dynamic variation Abstract:The bacterial communities in a granular activated GAC-UF advanced treatment process drinking water plant in the south of China were analyzed using NovaSeq6000 high throughput sequencing technology in summer and winter, in order to gain insight into the distribution and variation of those bacterial communities in this process. The results showed that the water quality indicators such as turbidity and total plate count in finished water all met the standards for drinking water quality GB 5749-2006. The bacterial community diversities were removed by the coagulation sedimentation, UF and disinfection, and the removal rates in summer were significantly higher than those in winter. The dominant phyla in both summer and winter were Proteobacteria, Actinobacteria, etc., but significant differences in bacterial community composition were found at the genus level. Additionally, Mycobacterium and Pseudomonas were the main potential pathogenic genera, and their total proportion in core microorganisms was 5.56%. In a word, the results provided evidence of distinct spatiotemporal variation of bacterial communities in the GAC-UF advanced treatment process, and contributed to microbiological safety assurance of drinking water.
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