An anaerobic ammonium oxidation-upflow anaerobic sludge blanket (anammox-UASB) reactor was operated without temperature control during the four seasons and was therefore subjected to natural periodic temperature variations between 9 and 28 ℃. The anammox reactor had a high nitrogen removal ability at intermediate and low temperatures. The total nitrogen (TN) concentration of the influent increased from 200 to 1200 mg/L, the nitrogen removal efficiency was maintained at 90%, and the nitrogen removal rate (NRR) increased to 9.15 ± 0.35 kg N/m³/d. The enrichment of anammox bacteria in the UASB granular sludge reached 53.8%, and the dominant bacteria changed from Candidatus Brocadia to Candidatus Kuenenia after several seasons of cultivation. Dynamics analysis revealed that the maximum reaction rate of the anammox-UASB sludge was 62.5 kg N/m³/d, reflecting the high potential nitrogen removal ability of the reactor.

在四个季节中，厌氧铵氧化-上流厌氧污泥床（anammox-UASB）反应器在没有温度控制的情况下运行，因此会承受9至28℃的自然周期性温度变化。厌氧氨氧化反应器在中低温下具有较高的脱氮能力。进水的总氮（TN）浓度从200 mg / L增加到1200 mg / L，氮去除效率保持在90％，氮去除率（NRR）增加到9.15±0.35 kg N / m ³ / d。在UASB颗粒污泥厌氧氨氧化菌的富集达到53.8％，并占主导地位的细菌改为暂定Brocadia以暂定经过数个季节的耕种的Kuenenia。动力学分析表明，厌氧-UASB污泥的最大反应速率为62.5 kg N / m ³ / d，反映了反应器的高潜在脱氮能力。