厌氧氨氧化耦合反硝化快速启动CANON工艺

发布时间：2019-01-23 09:11

【摘要】：在SBR反应器中.先采用低基质浓度配水启动稳定的厌氧氨氧化耦合反硝化(SAD),之后在低曝气条件下以模拟生活污水富集氨氧化细菌(AOB),启动CANON工艺.基于对反应器内脱氮性能和不同阶段功能菌动力学活性的分析,系统阐述了影响CANON工艺启动与稳定运行的影响因素.结果表明此启动方式不仅缩短了亚硝化启动时间,同时缩短了ANAMMOX菌对有机环境的适应时间,经过60d成功启动了CANON工艺并应用于处理生活污水,反应器ANR超过了93%.反应器较短的周期(4h),使得ANAMMOX菌和异养菌反硝化菌活性始终保持在合理范围内,μNH_4~+-N/μCOD比值始终大于1.0.异养反硝化菌对COD的降解反应,使反应器内pH值提高,同时反应周期间初期和末期游离氨(FA)始终处于对NOB的抑制水平,也是实现稳定亚硝化的重要原因.
[Abstract]:In SBR reactor. The stable anaerobic ammonia oxidation coupled denitrification (SAD),) process was initiated with low substrate concentration and water distribution, and then the CANON process was started by simulating the enrichment of domestic sewage by ammonia oxidizing bacteria (AOB), under low aeration conditions. Based on the analysis of the denitrification performance in the reactor and the kinetic activity of the functional bacteria in different stages, the factors affecting the start-up and stable operation of the CANON process were systematically described. The results showed that the start-up process not only shortened the start-up time of nitrosation, but also shortened the adaptation time of ANAMMOX bacteria to organic environment. After 60 days, the CANON process was successfully started and applied to the treatment of domestic sewage. The reactor ANR exceeded 93%. The shorter period (4 h) of the reactor made the denitrifying activity of ANAMMOX and heterotrophic bacteria always within a reasonable range, and the ratio of 渭 NH_4~ to N / 渭 COD was always greater than 1.0. The degradation of COD by heterotrophic denitrifying bacteria increased the pH value in the reactor, and at the beginning and the end of the reaction week, the free ammonia (FA) was always at the level of inhibition to NOB, which was also the important reason for the stabilization of nitrosation.
【作者单位】：北京工业大学水质科学与水环境恢复工程北京市重点实验室;哈尔滨工业大学城市水资源与水环境国家重点实验室;
【基金】：北京市青年拔尖团队项目(2014000026833TD02)
【分类号】：X703.1

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