Roles of hydroxylamine and hydrazine in the in-situ recovery of one-stage partial nitritation-anammox process: Characteristics and mechanisms
文献类型：期刊论文
| 作者 | Sui, Qianwen ; Wang, Yuanyue; Wang, Hongyan; Yue, Wenhui; Chen, Yanlin; Yu, Dawei; Chen, Meixue; Wei, Yuansong
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-03-10 |
| 卷号 | 707页码:1-12 |
| 关键词 | Anammox Nitritation Hydroxylamine Hydrazine In-situ restoration |
| ISSN号 | 0048-9697 |
| 英文摘要 | Nitrate built-up is a serious operational difficulty in one-stage partial nitritation anammox (PN/A) process. To investigate an effective method for in-situ restoration, hydroxylamine (NH2OH) and hydrazine (N2H4) of 2 mgN/L were dosed in PN/A process with nitrate built-up in a comparative study. NH2OH treatment showed better performances on TN removal and nitrate reduction than N2H4 and blank control. Through 104 days' addition of NH2OH, MRNN (mole ratio of NO3--N production to NH4+-N removal) was decreased from 70% to 19.91%; TN removal was increased from 0.01 to 0.18 kgN/(m(3) d). After stopping the chemical addition, nitrate rebounded for N2H4 treatment, but the restoration effect was stable and persistent for NH2OH. NH2OH addition resulted in a low reductive potential (-250 mV) and exerted strong inhibitions on nitrite oxidizing bacteria activities. Additionally, rapid enhancement of ammonia oxidizing bacteria activities, functional gene (hao) and Nitrosomonas gave rise to the restoration of PN/A with NH2OH addition. (C) 2019 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45058]  |
| 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,Wang, Yuanyue,Wang, Hongyan,et al. Roles of hydroxylamine and hydrazine in the in-situ recovery of one-stage partial nitritation-anammox process: Characteristics and mechanisms[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,707:1-12. |
| APA | Sui, Qianwen.,Wang, Yuanyue.,Wang, Hongyan.,Yue, Wenhui.,Chen, Yanlin.,...&Wei, Yuansong.(2020).Roles of hydroxylamine and hydrazine in the in-situ recovery of one-stage partial nitritation-anammox process: Characteristics and mechanisms.SCIENCE OF THE TOTAL ENVIRONMENT,707,1-12. |
| MLA | Sui, Qianwen,et al."Roles of hydroxylamine and hydrazine in the in-situ recovery of one-stage partial nitritation-anammox process: Characteristics and mechanisms".SCIENCE OF THE TOTAL ENVIRONMENT 707(2020):1-12. |
入库方式： OAI收割
来源：生态环境研究中心
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