Performance of a novel vertical-flow settler: a comparative study
文献类型：期刊论文
| 作者 | Zhang Zhong-guo; Chen Zhao-yang; Li Yan-zhong; Fan Jing-hua; Fan Bin; Luan Zhao-kun; Lu Dao-qiang |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2006 |
| 卷号 | 18期号:5页码:858-863 |
| 关键词 | vertical-flow settler settling tank flocs blanket coagulation flocculation PACI |
| 英文摘要 | By increasing particle concentration and C value (root-mean-square velocity gradient) to enhance flocculation, a novel vertical-flow settler was designed to increase sedimentation effectiveness, and to simultaneously improve operational stabilization. Due to the gradual decrease in upward flow-rate of raw water, a floes blanket would form and suspend in the middle section of the settler, not at the bottom as in a conventional clarifier. Enough large floes, resulted from flocculation or filtration, would continuously settle out of the floes blanket, and simultaneously, the floes in raw water or those forming above the blanket would ceaselessly enter the flocs blanket. As a result, the floes concentration in the blanket could keep a dynamic balance. The hydrodynamic shear in the blanket was improved by flow separation, which was induced by the abrupt change in flow channel. Due to the floes blanket and improved hydrodynamic shear, flocculation would be enhanced, which was helpful for removing fine particles in raw water. A comparative study showed that the novel vertical-flow settler had a much better performance in the removal of the particles in raw water than a conventional one, when they treated kaolin suspensions of different concentrations (500, 100 and 50 mg/L, respectively) coagulated by polyaluminum chloride(PACI) at the up-flow rates of I and 2 mm/s, respectively. |
| WOS记录号 | WOS:000240445400005 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23014]  |
| 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 | Zhang Zhong-guo,Chen Zhao-yang,Li Yan-zhong,et al. Performance of a novel vertical-flow settler: a comparative study[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2006,18(5):858-863. |
| APA | Zhang Zhong-guo.,Chen Zhao-yang.,Li Yan-zhong.,Fan Jing-hua.,Fan Bin.,...&Lu Dao-qiang.(2006).Performance of a novel vertical-flow settler: a comparative study.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,18(5),858-863. |
| MLA | Zhang Zhong-guo,et al."Performance of a novel vertical-flow settler: a comparative study".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 18.5(2006):858-863. |
入库方式： OAI收割
来源：生态环境研究中心
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