[1]庄彦华,唐燕华,罗芷瑶,等.厌氧氨氧化膜生物反应器的快速启动和稳定运行[J].中国给水排水,2025,41(5):72-80.
ZHUANGYan-hua,TANGYan-hua,LUOZhi-yao,et al.Rapid Start?up of Anammox-MBR Process and Its Stable Operation[J].China Water & Wastewater,2025,41(5):72-80.
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ZHUANGYan-hua,TANGYan-hua,LUOZhi-yao,et al.Rapid Start?up of Anammox-MBR Process and Its Stable Operation[J].China Water & Wastewater,2025,41(5):72-80.
厌氧氨氧化膜生物反应器的快速启动和稳定运行
中国给水排水[ISSN:1000-4062/CN:12-1073/TU]
卷:
第41卷
期数:
2025年第5期
页码:
72-80
栏目:
出版日期:
2025-03-01
- Title:
- Rapid Start?up of Anammox-MBR Process and Its Stable Operation
- 关键词:
- 厌氧氨氧化(Anammox); 膜生物反应器(MBR); 快速启动; 酶活性; 微生物群落结构
- Keywords:
- anaerobic ammonia oxidation (Anammox); membrane bioreactor (MBR); rapid start-up; enzyme activity; microbial community composition
- 摘要:
- 厌氧氨氧化(Anammox)作为一种节能高效的新型脱氮工艺,启动缓慢和难以稳定运行是限制其工程应用的主要因素。为此,提出了耦合膜生物反应器(MBR)的Anammox快速启动与稳定运行策略,采用以模拟废水为进水的中试规模连续流反应器,接种污水处理厂厌氧池污泥,在温度为(32.1±1.6) ℃、pH=7.40~8.75的条件下,通过连续搅拌、提高进水基质浓度,成功缩短启动时间至135 d。系统稳定运行时,NH4+-N、NO2--N平均去除率分别达到95.61%和92.17%,通过阶梯式提高进水基质浓度和缩短水力停留时间(HRT),TN容积去除负荷(NRR)最高可达1.36 kg/(m3·d),反应器脱氮性能良好。经驯化培养,系统培育出Candidatus_Brocadia、Candidatus_Jettenia和Candidatus_Kuenenia三种Anammox功能菌,三种细菌在膜组件表面与颗粒污泥中的总丰度分别达到20.78%和22.79%,实现了不同生态位上的高度富集,强化了多种Anammox功能菌的协同脱氮效果。
- Abstract:
- Anaerobic ammonia oxidation (Anammox) represents an innovative and highly efficient nitrogen removal process that also offers significant energy savings. However, the long start-up time and challenges in achieving stable operation are primary obstacles hindering its widespread engineering application. Therefore, a strategy for the rapid start-up and stable operation of an Anammox process coupled with membrane bioreactor (MBR) was proposed. A pilot-scale continuous-flow reactor was employed, utilizing simulated wastewater as the media. The reactor was seeded with anaerobic sludge from a sewage treatment plant, operating at temperature of (32.1±1.6) ℃ and pH range of 7.40 to 8.75. By implementing continuous stirring and gradually increasing the media concentration, the start-up period was successfully reduced to 135 days. When the system operated stably, the average removal rates of NH4+-N and NO2--N reached 95.61% and 92.17%, respectively. By stepwise increasing the media concentration and shortening the hydraulic retention time (HRT), the total nitrogen volumetric removal rate (NRR) was enhanced to as high as 1.36 kg/(m3·d). Consequently, the reactor demonstrated excellent denitrification performance. Three Anammox bacterial genera, namely Candidatus_Brocadia, Candidatus_Jettenia, and Candidatus_Kuenenia, were successfully cultured following a domestication process. The total abundance of the three bacterial genera on the surface of the membrane module and within the granular sludge reached 20.78% and 22.79%, respectively. This significant enrichment in distinct ecological niches enhanced the synergistic nitrogen removal efficiency among various Anammox functional bacteria.
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更新日期/Last Update:
2025-03-01