Enhanced arsenic removal by in situ formed Fe-Mn binary oxide in the aeration-direct filtration process
文献类型：期刊论文
| 作者 | Wu, Kun ; Liu, Rui-Ping ; Liu, Hui-Juan ; Lan, Hua-Chun ; Qu, Jiu-Hui |
| 刊名 | Engineering; Environmental Sciences & Ecology
 |
| 出版日期 | 2012 |
| 卷号 | 239期号:1页码:308-315 |
| 关键词 | Direct filtration Reagent addition Arsenic Fe-Mn binary oxide Groundwater |
| ISSN号 | 0304-3894 |
| 中文摘要 | Field studies were conducted to evaluate the feasibility of an in situ formed Fe-Mn binary oxide (in situ FMBO) for improving arsenic (As) removal in the aeration-direct filtration process. The transformation and transportation of As, Fe, and Mn in the filter bed were also investigated. The in situ FMBO increased the As removal efficiency by 20-50% to keep the residual As below 10 mu g/L. The optimum FMBO dosage was determined to be 0.55 mg/L with the Fe/Mn ratio as 10:1. The removal of Fe, Mn, turbidity, and particles was also improved to a large extent. The in situ FMBO favored the transformation of soluble As, Fe, and Mn into the solid phases, benefiting the removal of these pollutants by the subsequent filtration. Moreover, the deposited precipitates onto the filter media were characterized, as indicated by the analyses of SEM/EDS and particle size distribution. The long-term experiments exhibited decreased head loss growth and prolonged run length, suggesting an enhanced pollutant catching capacity of the filter media. The full-scale field study with a flow of 10,000 m(3)/d confirmed positive effects of in situ FMBO on As removal, with the average effluent As concentration reduced from 20 mu g/L to 6 mu g/L (reagent cost = 0.006 (sic)/m(3)). (C) 2012 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000310763600038 |
| 公开日期 | 2014-11-28 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/8134]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wu, Kun,Liu, Rui-Ping,Liu, Hui-Juan,et al. Enhanced arsenic removal by in situ formed Fe-Mn binary oxide in the aeration-direct filtration process[J]. Engineering; Environmental Sciences & Ecology,2012,239(1):308-315. |
| APA | Wu, Kun,Liu, Rui-Ping,Liu, Hui-Juan,Lan, Hua-Chun,&Qu, Jiu-Hui.(2012).Enhanced arsenic removal by in situ formed Fe-Mn binary oxide in the aeration-direct filtration process.Engineering; Environmental Sciences & Ecology,239(1),308-315. |
| MLA | Wu, Kun,et al."Enhanced arsenic removal by in situ formed Fe-Mn binary oxide in the aeration-direct filtration process".Engineering; Environmental Sciences & Ecology 239.1(2012):308-315. |
入库方式： OAI收割
来源：生态环境研究中心
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