Pre-treatment for ultrafiltration: effect of pre-chlorination on membrane fouling
文献类型：期刊论文
| 作者 | Yu, Wenzheng
|
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2014 |
| 卷号 | 4期号:1页码:- |
| ISSN号 | 2045-2322 |
| 中文摘要 | Microbial effects are believed to be a major contributor to membrane fouling in drinking water treatment. Sodium hypochlorite (NaClO) is commonly applied in membrane cleaning, but its potential use as a pretreatment for controlling operational fouling has received little attention. In this study, the effect of adding a continuous low dose of NaClO (1 mg/l as active Cl) in combination with alum, before ultrafiltration, was compared with only alum as pretreatment. The results showed that the addition of NaClO substantially reduced membrane fouling both in terms of the rate of TMP development and the properties of the membrane cake layer. Although the size of nano-scale primary coagulant flocs changed little by the addition of NaClO, the cake layer on the membrane had a greater porosity and a substantially reduced thickness. NaClO was found to inactivate bacteria in the influent flow, which reduced both microbial proliferation and the production of proteins and polysaccharides in the cake layer and contributed significantly to improving the overall ultrafiltration performance. NaClO dosing had no adverse impact on the formation of currently regulated disinfection by-product compounds (THMs and HAAs). |
| WOS记录号 | WOS:000342723600002 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9687]  |
| 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 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 | Yu, Wenzheng. Pre-treatment for ultrafiltration: effect of pre-chlorination on membrane fouling[J]. SCIENTIFIC REPORTS,2014,4(1):-. |
| APA | Yu, Wenzheng.(2014).Pre-treatment for ultrafiltration: effect of pre-chlorination on membrane fouling.SCIENTIFIC REPORTS,4(1),-. |
| MLA | Yu, Wenzheng."Pre-treatment for ultrafiltration: effect of pre-chlorination on membrane fouling".SCIENTIFIC REPORTS 4.1(2014):-. |
入库方式： OAI收割
来源：生态环境研究中心
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