HEYu,HECheng-da,ZHUTeng-yi,et al.Cultivation and Properties of Granular Sludge for Biological Phosphorus Removal[J].China Water & Wastewater,2024,40(23):91-98.
生物除磷颗粒污泥的培养及其特性
- Title:
- Cultivation and Properties of Granular Sludge for Biological Phosphorus Removal
- Keywords:
- biological phosphorus removal; aerobic granular sludge; organic matter; microbial community composition
- 摘要:
- 通过控制运行参数，在SBR反应器中成功培养出生物除磷颗粒污泥。稳定状态下，反应器内以白色颗粒污泥为主，同时存在黄色颗粒污泥；当进水PO43--P浓度低于55 mg/L时，系统对其去除率可以达到98%以上。Illumina MiSeq高通量测序结果显示，白色颗粒污泥中以聚磷菌Candidatus_Accumulibacter和反硝化聚磷菌Pseudomonas为主，占比达到46.3%；黄色颗粒污泥中以聚糖菌Defluviicoccus和Candidatus_Competibacter为主，占比为33.5%，说明颗粒污泥的颜色可能取决于其优势菌群。
- Abstract:
- In this paper, granular sludge capable of biological phosphorus removal was successfully cultivated in a sequencing batch reactor (SBR) through the regulation of operational parameters. In the steady state, white granular sludge constituted the predominant component, while yellow granular sludge was also observed in the reactor. When the concentration of PO43--P was below 55 mg/L, its removal efficiency exceeded 98%. The high?throughput sequencing results obtained from Illumina MiSeq indicated that the white granular sludge predominantly comprised phosphate- accumulating organisms, specifically Candidatus_Accumulibacter, as well as denitrifying phosphate- accumulating organisms Pseudomonas, which together accounted for relative abundance of 46.3%. In the yellow granular sludge, the predominant bacterial species, glycogen-accumulating organisms Defluviicoccus and Candidatus_Competibacter, constituted 33.5% of the microbial community, suggesting that the color of granular sludge might be influenced by its dominant bacterial groups.
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