GUOSiyu,PANJiantong,CHIJinbao,et al.Pilot-scale Cultivation of AGS in SBR Using Actual Municipal Wastewater[J].China Water & Wastewater,2026,42(9):79-86.
Pilot-scale Cultivation of AGS in SBR Using Actual Municipal Wastewater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第42卷
Number:
第9期
Page:
79-86
Column:
Date of publication:
2026-05-01
- Keywords:
- sequencing batch reactor (SBR); aerobic granular sludge (AGS); actual municipal wastewater; microbial community structure
- Abstract:
- In order to investigate the applicability of the aerobic granular sludge (AGS) process in actual municipal wastewater treatment, municipal wastewater from a wastewater treatment plant in Luzhou was used as the influent substrate, and flocculent sludge from the existing biochemical section of the plant was inoculated to cultivate AGS in a pilot-scale sequencing batch reactor (SBR) system. The system was operated for 210 days, starting from autumn and continuing until the end of the following spring. The results showed that AGS could be successfully cultivated using actual municipal wastewater from southern China at temperatures ranging from 10 ℃ to 20 ℃. The sludge granulation ratio stabilized at over 50%, reaching a maximum of 56%, and the SV30/SV5 ratio was maintained at 0.8-1.0. After stable operation of the SBR, the average removal rates of COD, ammonia nitrogen, and total phosphorus reached 90%, 97%, and 93%, respectively. Meanwhile, high-throughput sequencing analysis of the microbial communities in mature AGS and flocculent sludge revealed that Proteobacteria was the dominant phylum in flocculent sludge, while the relative abundance of Actinobacteriota was significantly higher in AGS. The genera involved in nitrogen removal, phosphorus removal, and carbon removal, such as Tetrasphaera, Rhodobacter, and Azospira, exhibited higher relative abundances in AGS than in flocculent sludge. Microbial community analysis also revealed a decrease in microbial community diversity and significant changes in community composition in mature AGS.
Last Update:
2026-05-01