Zhang Ze-Wen, Li Dong, Zhang Jie, Guo Yue-Zhou, Li Shuai
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
Huan Jing Ke Xue. 2017 Dec 8;38(12):5215-5221. doi: 10.13227/j.hjkx.201705289.
The experiment explored the effect of different seeding sludge on the rapid start-up of an anaerobic ammonium oxidation (ANAMMOX) reactor by seeding a single type of denitrified granular sludge and a mixed sludge composed of denitrified granular sludge and aerobic nitrification sludge (the volume ratio of the mixed sludge was 2:1) in two sequencing batch reactors (SBR), R0 and R1, respectively. The results indicated that R0 was started up successfully on day 64 with a nitrogen removal rate (NRR) of 0.26 kg·(m·d), while R1 was started up by day 47 with a NRR of 0.30 kg·(m·d), which was shorter than R0 by 17 d. In the enrichment stage, reddish sludge appeared in R1, and the characteristics of anaerobic ammonium oxidation of the system were more obvious than in R0. After the reactor was started up successfully, the stoichiometric ratio of R0 was 1.20 and 0.34, respectively, and the stoichiometric ratio of R1 was 1.26 and 0.21, which was closer to the theoretical values of 1.32 and 0.26. The mixed liquor suspended solids (MLSS) and mixed liquor volatile suspended solids (MLVSS) of R0 were restored to 51% (4.2 g·L) and 38% (2.3 g·L)of the initial seeding sludge, respectively, while the MLSS and MLVSS of R1 were restored to 54% (4.4 g·L) and 42% (2.6 g·L),which was higher than R0. It can be speculated that the proliferation rate of AnAOB in R1 was faster than in R0. Seeding mixed sludge can accelerate the start-up process of anaerobic ammonium oxidation with more stable N-removal performance.
该实验通过分别在两个序批式反应器（SBR）R0和R1中接种单一类型的反硝化颗粒污泥以及由反硝化颗粒污泥和好氧硝化污泥组成的混合污泥（混合污泥的体积比为2:1），探究了不同接种污泥对厌氧氨氧化（ANAMMOX）反应器快速启动的影响。结果表明，R0在第64天成功启动，氮去除率（NRR）为0.26 kg·(m·d)，而R1在第47天启动，NRR为0.30 kg·(m·d)，比R0短17天。在富集阶段，R1中出现了微红的污泥，系统的厌氧氨氧化特性比R0更明显。反应器成功启动后，R0的化学计量比分别为1.20和0.34，R1的化学计量比为1.26和0.21，更接近理论值1.32和0.26。R0的混合液悬浮固体（MLSS）和混合液挥发性悬浮固体（MLVSS）分别恢复到初始接种污泥的51%（4.2 g·L）和38%（2.3 g·L），而R1的MLSS和MLVSS恢复到54%（4.4 g·L）和42%（2.6 g·L），高于R0。可以推测，R1中厌氧氨氧化菌（AnAOB）的增殖速率比R0快。接种混合污泥可以加速厌氧氨氧化的启动过程，且氮去除性能更稳定。
