Identification and evaluation of SND in a full-scale multi-channel oxidation ditch system under different aeration modes
文献类型：期刊论文
| 作者 | Zhou, Xin; Guo, Xuesong; Han, Yunping |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2015 |
| 卷号 | 259页码:715-723 |
| 关键词 | Simultaneous Nitrification And deNitrification Oxidation Ditch Dissolved Oxygen Micro-environment Characteristics Floc Size Nitrogen Mass Balances |
| 英文摘要 | Simultaneous nitrification and denitrification (SND) was evidently observed in a full-scale multi-channel oxidation ditch (OD), especially occurring within the outer channel under microaerophilic conditions. The optimum average dissolved oxygen (DO) concentration for SND was 0.25 mg L-1 with 79% SND efficiency and 5.09 mg L-1 h(-1) SND rate, leading to 74.9% overall TN removal efficiency. Small sized flocs consisting of more nitrifying bacteria enhanced nitrification in favor of SND due to less oxygen diffusion limitation inside flocs than larger flocs under micro-aerated conditions. SND was also identified by co-existing of nitrifying and denitrifying bacteria as well as some microaerophilic microorganisms based on molecular biology analysis. Nitrogen mass balances (NMB) quantitatively demonstrated that the highest SND efficiency accounted for 44.1% of influent nitrogen mass. Above valuable findings might deeply reveal SND as a principal mechanism of nitrogen removal in a multi-channel OD from macro- to micro-scale. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Engineering, Environmental ; Engineering, Chemical |
| WOS记录号 | WOS:000343952400074 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32878]  |
| 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 | Zhou, Xin,Guo, Xuesong,Han, Yunping. Identification and evaluation of SND in a full-scale multi-channel oxidation ditch system under different aeration modes[J]. CHEMICAL ENGINEERING JOURNAL,2015,259:715-723. |
| APA | Zhou, Xin,Guo, Xuesong,&Han, Yunping.(2015).Identification and evaluation of SND in a full-scale multi-channel oxidation ditch system under different aeration modes.CHEMICAL ENGINEERING JOURNAL,259,715-723. |
| MLA | Zhou, Xin,et al."Identification and evaluation of SND in a full-scale multi-channel oxidation ditch system under different aeration modes".CHEMICAL ENGINEERING JOURNAL 259(2015):715-723. |
入库方式： OAI收割
来源：生态环境研究中心
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