Removal of precursors of typical nitrogenous disinfection byproducts in ozonation integrated with biological activated carbon (O-3/BAC)
文献类型：期刊论文
| 作者 | Ma, Baiwen; Tan, Yiwen; Tao, Hui; Chen, Wei; Lin, Tao; Zheng, Jian |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 209页码:68-77 |
| 关键词 | Nitrogenous disinfection byproducts Precursors Biological activated carbon Drinking water treatment Soluble microbial products |
| ISSN号 | 0045-6535 |
| 文献子类 | Article |
| 英文摘要 | The O-3/BAC process has been widely used in drinking water treatment to improve the removal of dissolved organic matters (DOMs), including the precursors of nitrogenous disinfection byproducts (N-DBPs). In this study, the removal of N-DBP precursors by biological activated carbon (BAC) filters with different usage time of granular activated carbon (GAC) was investigated. Results showed that the BAC filter with 6 years of usage time of GAC (old BAC filter) had a poor performance in the removal of precursors of N-DBPs such as dichloroacetonitrile (DCAN; an average of only 4.7%), dichloroacetamide (DCAcAm), and trichloronitromethane (TCNM) when compared with the BAC filter with 1 year of usage time of GAC (new BAC filter). Particularly, the organic fraction >10 kDa and the percentage of autochthonous substances were increased in the effluent of the old BAC filter. The red shift of the fluorescence peaks was evident in the excitation-emission matrix spectrum of the effluent from the old BAC filter. The abiotic adsorption of precursors by the old BAC filter was less. In addition, less amino acids and polysaccharides were removed, but more amino sugars and proteins were produced because of microbial metabolism. The metabolism strength of the attached biofilm decreased with increased operation time of the BAC filter. The relative abundance of Sphingomonas significantly decreased in the biofilm of the old BAC filter. The diversity of microbial community in the old BAC filter was higher, but the equitability was lower than those of the new BAC filter. The less removal of N-DBP precursors by the old BAC filter was attributed to the changes in abiotic adsorption capacity and microbial metabolism properties, in which soluble microbial products played an important role. (C) 2018 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41409]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Ma, Baiwen,Tan, Yiwen,Tao, Hui,et al. Removal of precursors of typical nitrogenous disinfection byproducts in ozonation integrated with biological activated carbon (O-3/BAC)[J]. CHEMOSPHERE,2018,209:68-77. |
| APA | Ma, Baiwen,Tan, Yiwen,Tao, Hui,Chen, Wei,Lin, Tao,&Zheng, Jian.(2018).Removal of precursors of typical nitrogenous disinfection byproducts in ozonation integrated with biological activated carbon (O-3/BAC).CHEMOSPHERE,209,68-77. |
| MLA | Ma, Baiwen,et al."Removal of precursors of typical nitrogenous disinfection byproducts in ozonation integrated with biological activated carbon (O-3/BAC)".CHEMOSPHERE 209(2018):68-77. |
入库方式： OAI收割
来源：生态环境研究中心
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