摘要：

采用改良SBR工艺结合低曝气方法培养丝状菌颗粒污泥。实验结果表明，在低曝气条件下R1反应器运行60 d后能培养出丝状菌颗粒污泥且沉降性能良好。2个反应装置在不同曝气条件下，R1稳定运行超过40 d，其污染物去除效果与R2相当（COD去除率>90%，TN去除率为60%~70%，TP去除率为50%），比R2节约87.5%的曝气量。高通量测序结果表明R1优势菌种Trichococcus（23.0%）、Thiothrix（14.9%）和Desulfobulbus（7.6%）均为丝状菌。证实了丝状菌颗粒污泥有高效去除营养物质和低能耗等优势，在未来污水处理上有很好的应用潜力。

关键词: 丝状菌颗粒污泥, 脱氮除磷, 生物群落

Abstract:

Improved SBR process combined with low aeration quantity was used to cultivate filamentous granular sludge. The experimental results showed that the filamentous granular sludge could be formed after 60 days of R1 operation in low aeration condition and had good settling performance. Under different aerations of the two reactors, R1 ran stably over 40 d, the removal efficiency of R1 was equivalent to that of R2(COD removal efficiency >90%, TN removal efficiency 60%-70%, TP removal efficiency 50%), saved 87.5% of aeration compared with R2. High throughput sequencing showed that the dominant strain in R1 were Tricococcus(23.0%), Thiotrix(14.9%) and Desulfobulbus (7.6%), and all of them were filamentous bacteria. It is proved that the filamentous bacteria granular sludge has the advantages of high efficiency in removing nutrients and low energy consumption, which has good application potential in the future wastewater treatment.

Key words: filamentous granular sludge, nitrogen and phosphorus removal, biological community

中图分类号: 

• X703.1