Seasonal variation in the nature of DOM in a river and drinking water reservoir of a closed catchment
文献类型：期刊论文
| 作者 | Anderson, Sharolyn J.; Chow, Christopher W. K.; Awad, John; van Leeuwen, John; Cox, Jim W.; Smernik, Ronald J. |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2017 |
| 卷号 | 220期号:0页码:788-796 |
| 关键词 | Surface Waters Seasonal Variation Treatability Of Organic Thmfp |
| 英文摘要 | Dissolved organic matter (DOM) in surface waters used for drinking purposes can vary markedly in character depending on its source within catchments and the timing and intensity of rainfall events. Here we report the findings of a study on the character and concentration of DOM in waters collected during different seasons from Myponga River and Reservoir, South Australia. The character of DOM was assessed in terms of its treatability by enhanced coagulation and potential for disinfection by-product i.e. trihalomethane (THM) formation. During the wet seasons (winter and spring), water samples from the river had higher DOC concentrations ((X) over bar: 21 mg/L) and DOM of higher average molecular weight (AMW: 1526 Da) than waters collected during the dry seasons (summer and autumn: DOC: 13 mg/L; AMW: 1385 Da). Even though these features led to an increase in the percentage removal of organics by coagulation with alum (64% for wet compared with 53% for dry season samples) and a lower alum dose rate (10 versus 15 mg alum/mg DOC removal), there was a higher THM formation potential (THMFP) from wet season waters (treated waters: 217 mu g/L vs 172 mu g/L). For reservoir waters, samples collected during the wet seasons had an average DOC concentration (X: 15 mg/L), percentage removal of organics by alum (54%), alum dose rates (13 mg/mg DOC) and THMFP (treated waters: 207 mu g/L) that were similar to samples collected during the dry seasons (mean DOC: 15 mg/L; removal of organics: 52%; alum dose rate: 13 mg/mg DOC; THMFP: 212 mu g/L, for treated waters). These results show that DOM present in river waters and treatability by alum are highly impacted by seasonal environmental variations. However these in reservoir waters exhibit less seasonal variability. Storage of large volumes of water in the reservoir enables mixing of influent waters and stabilization of water quality. Crown Copyright (C) 2016 Published by Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39731]  |
| 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 | Anderson, Sharolyn J.,Chow, Christopher W. K.,Awad, John,et al. Seasonal variation in the nature of DOM in a river and drinking water reservoir of a closed catchment[J]. ENVIRONMENTAL POLLUTION,2017,220(0):788-796. |
| APA | Anderson, Sharolyn J.,Chow, Christopher W. K.,Awad, John,van Leeuwen, John,Cox, Jim W.,&Smernik, Ronald J..(2017).Seasonal variation in the nature of DOM in a river and drinking water reservoir of a closed catchment.ENVIRONMENTAL POLLUTION,220(0),788-796. |
| MLA | Anderson, Sharolyn J.,et al."Seasonal variation in the nature of DOM in a river and drinking water reservoir of a closed catchment".ENVIRONMENTAL POLLUTION 220.0(2017):788-796. |
入库方式： OAI收割
来源：生态环境研究中心
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。