Multiple strategies for maintaining stable partial nitritation of low-strength ammonia wastewater
文献类型：期刊论文
| 作者 | Sui, Qianwen ; Jiang, Li'an; Di, Fei; Yue, Wenhui; Chen, Yanlin; Wang, Hongyan; Chen, Meixue; Wei, Yuansong
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-11-10 |
| 卷号 | 742页码:1-11 |
| ISSN号 | 0048-9697 |
| 关键词 | Partial nitritation Low-strength ammonia wastewater Bioaugmentation Mathematical modeling Ammonia oxidizing bacteria Nitrite oxidizing bacteria |
| 英文摘要 | Stable production of nitrite is an essential technical challenge for mainstream anaerobic ammonia oxidation (Anammox). Due to difficulties in the stable inhibition of nitrite oxidizing bacteria (NOB) and maintenance of long-term partial nitritation (PN), integrated multiple, rather than a single, controlling strategies were preferred especially in a continuous-flow treatment system. A mathematically model was developed to evaluate effects of integrated multiple-strategies on ammonia oxidizing bacteria (AOB) and NOB. Through experimental study and model simulation, intermittent aeration and low SRT (3.5 d) resulted in unstable nitrite accumulation. Integrated multiple-strategies of intermittent aeration, low SRT (3.5 d) and bioaugmentation achieved nitrite accumulation rate of 81% and NO2--N/NH4+-N ratio in effluent of 1.29, which was preferable for further anammox process. Meanwhile, the richness and diversity of microbial community increased due to the bioaugmentation. The AOB/NOB ratio increased from 13.8 to 34.1 which facilitated nitrite accumulation. In combination with bioaugmentation, the observed growth rates of AOB and NOB increased from -0.0835 and -0.0282 to 0.0434 and 0.0127 d(-1), respectively, which promoted AOB outcompeting NOB in the mixed liquid. (C) 2020 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45049]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 推荐引用方式 GB/T 7714 | Sui, Qianwen,Jiang, Li'an,Di, Fei,et al. Multiple strategies for maintaining stable partial nitritation of low-strength ammonia wastewater[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,742:1-11. |
| APA | Sui, Qianwen.,Jiang, Li'an.,Di, Fei.,Yue, Wenhui.,Chen, Yanlin.,...&Wei, Yuansong.(2020).Multiple strategies for maintaining stable partial nitritation of low-strength ammonia wastewater.SCIENCE OF THE TOTAL ENVIRONMENT,742,1-11. |
| MLA | Sui, Qianwen,et al."Multiple strategies for maintaining stable partial nitritation of low-strength ammonia wastewater".SCIENCE OF THE TOTAL ENVIRONMENT 742(2020):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
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