National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China; School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan.
Bioresour Technol. 2019 Dec;293:122039. doi: 10.1016/j.biortech.2019.122039. Epub 2019 Aug 21.
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/m/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/m/d, reflecting the high potential nitrogen removal ability of the reactor.
在四季运行过程中，无需进行温度控制的厌氧氨氧化-上流式厌氧污泥床（Anammox-UASB）反应器，会受到 9-28℃的自然周期性温度变化的影响。在中低温条件下，该 Anammox 反应器具有较强的脱氮能力。进水的总氮（TN）浓度由 200 增至 1200mg/L，氮去除率保持在 90%，氮去除速率（NRR）增加至 9.15±0.35kgN/m/d。UASB 颗粒污泥中 Anammox 细菌的丰度达到 53.8%，经过几个季节的培养后，优势菌从布鲁卡氏菌属变为 Kuenenia 菌属。动力学分析表明，Anammox-UASB 污泥的最大反应速率为 62.5kgN/m/d，这反映了该反应器具有较高的潜在脱氮能力。
