摘要
基于常温条件下厌氧氨氧化启动时间较长、生物质含量低的问题,实验拟通过温度控制,在SBR反应器中快速启动厌氧氨氧化颗粒污泥,实现常温低基质条件下稳定运行.结果表明,采取适当升高温度(27℃)再降温的方式,逐渐缩短沉淀时间,能够在常温条件下30 d启动厌氧氨氧化颗粒污泥,颗粒平均粒径达到430μm以上,氨氮及亚硝氮去除率分别为88%和85%左右,总氮去除率达到75%;在低基质稳定运行阶段,氨氮去除率能够达到86%,亚硝氮去除率能够达到98%,总氮去除率达到85%以上; SVI(以MLSS计)稳定在30 m L·g-1,MLVSS/MLSS大于60%,蛋白质(PN)/多糖(PS)稳定在1. 75左右.采取控制温度的方式无需控制进水中的溶解氧可以实现常温低基质厌氧氨氧化颗粒的启动和稳定运行,通过控制进水总氮负荷能够获得较高总氮去除率.
At room temperature( 21-25℃),the long start-up time of anaerobic ammonium oxidation( ANAMMOX) granular sludge is the main problem preventing the practical application of this technology. This experiment aimed to cultivate the anaerobic ammonia oxidizing granular sludge in the SBR reactor by adjusting the temperature. After the start-up of the ANAMMOX,stable operation was achieved by changing hydraulic retention time( HRT) and the concentration of the inflow water substrate. The results demonstrated that the anaerobic ammonia oxidation granular sludge could be successfully started-up in 30 d and realized a stable operation at room temperature( 21-25℃). The removal rate of ammonia-nitrogen and nitrogen was about 88% and 85%,respectively,and the removal rate of total nitrogen was 75%. At the stable operation stage of the low matrix,the removal rate of ammonia-nitrogen reached 86%,the removal rate of nitrogen was 98%,and the total nitrogen removal rate was over 85%. SVI was stable at 30 m L·g-1,and MLVSS/MLSS was more than 60%. The value of protein/polysaccharide was stable around 1. 75. The dissolved oxygen in the influent was not removed. In this case,controlling the temperature could be used to realize the rapid start-up of the anaerobic ammonia oxidation granular sludge at room temperature( 21-25℃),and the high biomass content and nitrogen removal rate can be obtained.
作者
李海玲
李冬
张杰
刘博
李帅
LI Hai-ling;LI Dong;ZHANG Jie;LIU Bo;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)
出处
《环境科学》
EI
CAS
CSCD
北大核心
2019年第2期837-844,共8页
Environmental Science
基金
北京市优秀青年拔尖团队项目(2014000028833TD02)
关键词
厌氧氨氧化(ANAMMOX)
颗粒污泥
温度
总氮负荷
氮去除率
anaerobic ammonium oxidation(ANAMMOX)
granular sludge
temperature
total nitrogen load
nitrogen removal rate
