三种接种物启动Anammox-EGSB反应器的性能

Performances of Anammox-EGSB bioreactors started up with three different seeding sludges

摘要:

为了优选接种物和加速厌氧氨氧化 (Anammox) 反应器启动，分别以厌氧产甲烷污泥 (Anaerobic methanogenic sludge，AMS)、新鲜厌氧氨氧化污泥 (Fresh Anammox sludge，FAS) 和储藏厌氧氨氧化污泥 (Stored Anammox sludge，SAS) 作为接种物，研究了厌氧氨氧化膨胀颗粒污泥床 (Anammox-EGSB) 反应器 (R1、R2和R3) 的启动性能。结果表明：3种接种物均能成功启动Anammox-EGSB反应器，启动性能的优劣次序为

Abstract:

In order to select better seeding sludge and promote start-up of Anammox reactors, we studied the start-up performances of three Anammox-EGSB bioreactors inoculated with anaerobic methanogenic sludge (AMS) (R1), Fresh Anammox sludge (FAS) (R2) and stored Anammox sludge (SAS) (R3), respectively. Results showed that these three seeding sludges could start up Anammox-EGSB bioreactors successfully, but the start-up progresses showed different characteristics. The start-up course of R1 could be divided into three phases including autolysis phase (15 d), lag phase (54 d) and activity elevation phase (40 d). However, the start-up courses of R2 and R3 only included lag phase (2 d and 12 d, respectively) and activity elevation phase (15 d and 57 d, respectively). Besides, the performance of R3 was better than that of R1, but worse than that of R2. Furthermore, bathing the Anammox sludge in the effluent of bioreactors was a convenient and effective way to keep the activity of the Anammox sludge. The ammonia removal efficiency, percentage of denitrification and the stoichiometric ratios of NH4+-Nr/NO2?-Nr and NO3?-Np/NH4+-Nr could serve as indicators to monitor the start-up of Anammox bioreactors.