Start-up of single-stage partial nitritation-anammox micro-granules system: Performance and microbial community dynamics.
Start-up of single-stage partial nitritation-anammox micro-granules system: Performance and microbial community dynamics.
复制标题
单级部分亚硝化-厌氧氨氧化微颗粒系统的启动：性能和微生物群落动力学。
DOI：
10.1016/j.envres.2020.109581
复制
发表时间：
2020-07
影响因子：
8.3
通讯作者：
Shaopo Wang;Jianyu Li;Dong Wang;Chenchen Wang;Jianfeng Zheng;Chunsheng Qiu;Jing-jie Yu
中科院分区：
文献类型：
--
作者：
Shaopo Wang;Jianyu Li;Dong Wang;Chenchen Wang;Jianfeng Zheng;Chunsheng Qiu;Jing-jie Yu
By manipulating influent nitrogen load and DO concentration in bulk liquid, the start-up and performance of a new micro-granule based partial nitritation-anammox process was investigated in a continuous stirred tank reactor (CSTR). Under the condition of nitrogen loadings from 0.3 to 1.4 kgN /m³/d and DO <0.21mg/L, the single-stage partial nitritation-anammox (SPNA) system was successfully started, with a nitrogen removal of 76.2%. Meanwhile, the oxygen utilization efficiency by ammonium oxidizing bacteria (AOB) increased in the system with the increase of influent ammonia loading rate. Micro-granules with an average diameter of 0.25 mm were formed. Sludge granulation was promoted by increasing influent nitrogen load, and there was a positive correlation between nitrogen load, extracellular polymeric substances (EPS) content and sludge particle size.Ca. Kueneniabecame the dominant anaerobic ammonium oxidizing bacteria (AnAOB) in the SPNA system. As the dominant AOB genera,Nitrosomonascoexist withCa. Kueneniain the micro-granules.
