Enhanced coagulation for high alkalinity and micro-polluted water: The third way through coagulant optimization
文献类型：期刊论文
| 作者 | Yan, Mingquan; Wang, Dongsheng; Qu, Jiuhui; Ni, Jinren; Chow, Christopher W. K. |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2008-04 |
| 卷号 | 42期号:2015-08-09页码:2278-2286 |
| 关键词 | alkalinity coagulant aid composite polyaluminum chloride (HPAC) enhanced coagulation natural organic matter (NOM) |
| 英文摘要 | Conventional coagulation is not an effective treatment option to remove natural organic matter (NOM) in water with high alkalinity/pH. For this type of water, enhanced coagulation is currently proposed as one of the available treatment options and is implemented by acidifying the raw water and applying increased doses of hydrolyzing coagulants. Both of these methods have some disadvantages such as increasing the corrosive tendency of water and increasing cost of treatment. In this paper, an improved version of enhanced coagulation through coagulant optimization to treat this kind of water is demonstrated. A novel coagulant, a composite polyaluminum chloride (HPAC), was developed with both the advantages of polyaluminum chloride (PACl) and the additive coagulant aids: PACl contains significant amounts of highly charged and stable polynuclear aluminum hydrolysis products, which is less affected by the pH of the raw water than traditional coagulants (alum and ferric salts); the additives can enhance both the charge neutralization and bridging abilities of PACl. HPAC exhibited 30% more efficiency than alum and ferric salts in dissolved organic carbon (DOC) removal and was very effective in turbidity removal. This result was confirmed by pilot-scale testing, where particles and organic matter were removed synergistically with HPAC as coagulant by sequential water treatment steps including pre-ozonation, coagulation, flotation and sand filtration. (C) 2007 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000255825500045 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22240]  |
| 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 | Yan, Mingquan,Wang, Dongsheng,Qu, Jiuhui,et al. Enhanced coagulation for high alkalinity and micro-polluted water: The third way through coagulant optimization[J]. WATER RESEARCH,2008,42(2015-08-09):2278-2286. |
| APA | Yan, Mingquan,Wang, Dongsheng,Qu, Jiuhui,Ni, Jinren,&Chow, Christopher W. K..(2008).Enhanced coagulation for high alkalinity and micro-polluted water: The third way through coagulant optimization.WATER RESEARCH,42(2015-08-09),2278-2286. |
| MLA | Yan, Mingquan,et al."Enhanced coagulation for high alkalinity and micro-polluted water: The third way through coagulant optimization".WATER RESEARCH 42.2015-08-09(2008):2278-2286. |
入库方式： OAI收割
来源：生态环境研究中心
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