An innovative wood-chip-framework substrate used as slow-release carbon source to treat high-strength nitrogen wastewater
文献类型：期刊论文
| 作者 | H. Li, Z. F. Chi, B. X. Yan, L. Cheng and J. Z. Li |
| 刊名 | Journal of Environmental Sciences
 |
| 出版日期 | 2017 |
| 卷号 | 51页码:275-283 |
| 通讯作者 | 李怀 |
| 中文摘要 | Removal of nitrogen in wastewater before discharge into receiving water courses is an important consideration in treatment systems. However, nitrogen removal efficiency is usually limited due to the low carbon/nitrogen (C/N) ratio. A common solution is to add external carbon sources, but amount of liquid is difficult to determine. Therefore, a combined wood-chip-framework substrate (with wood, slag and gravel) as a slow-release carbon source was constructed in baffled subsurface-flow constructed wetlands to overcome the problem. Results show that the removal rate of ammonia nitrogen (NH4+-N), total nitrogen (TN) and chemical oxygen demand (COD) could reach 37.5%-85%, 57.4%-86%, 32.4%-78%, respectively, indicating the combined substrate could diffuse sufficient oxygen for the nitrification process (slag and gravel zone) and provide carbon source for denitrification process (wood-chip zone). The nitrification and denitrification were determined according to the location of slag/gravel and wood-chip, respectively. Nitrogen removal was efficient at the steady phase before a shock loading using slag-wood-gravel combined substrate because of nitrification-denitrification process, while nitrogen removal was efficient under a shock loading with wood-slag-gravel combined substrate because of ANAMMOX process. This study provides a newidea for wetland treatment of high-strength nitrogen wastewater. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [http://ir.iga.ac.cn/handle/131322/7575]  |
| 专题 | 东北地理与农业生态研究所_湿地与全球变化学科组 |
| 推荐引用方式 GB/T 7714 | H. Li, Z. F. Chi, B. X. Yan, L. Cheng and J. Z. Li. An innovative wood-chip-framework substrate used as slow-release carbon source to treat high-strength nitrogen wastewater[J]. Journal of Environmental Sciences,2017,51:275-283. |
| APA | H. Li, Z. F. Chi, B. X. Yan, L. Cheng and J. Z. Li.(2017).An innovative wood-chip-framework substrate used as slow-release carbon source to treat high-strength nitrogen wastewater.Journal of Environmental Sciences,51,275-283. |
| MLA | H. Li, Z. F. Chi, B. X. Yan, L. Cheng and J. Z. Li."An innovative wood-chip-framework substrate used as slow-release carbon source to treat high-strength nitrogen wastewater".Journal of Environmental Sciences 51(2017):275-283. |
入库方式： OAI收割
来源：东北地理与农业生态研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。