Performance and autopsy of nanofiltration membranes at an oil-field wastewater desalination plant 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Environmental Science and Pollution Research
年/卷/期
2019 / 26 / 3
页码
2681-2690
ISSN号
0944-1344
作者单位
Nanyang Normal Univ, Coll Civil Engn & Architecture, Nanyang 473061, Peoples R China;Univ Jinan, Sch Civil Engn & Architecture, Jinan 250022, Shandong, Peoples R China;Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China;Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China;Nanyang Normal Univ, Coll Civil Engn & Architecture, Nanyang 473061, Peoples R China;
作者
Zhao, Dongsheng;Liu, Guicai;Zhu, Youbing;Gu, Zhengyang;Su, Chang;
摘要
In this study, the long-term operational performance of an on-site NF facility at a full-scale oil-field wastewater desalination plant was monitored. The NF facility with poor permeability due to membrane fouling enables efficient multivalent salt removal (rejections of Mg2+, Ca2+, Fe3+, and Al3+ were approximately 100%). Moreover, a comparison of the cleaning efficiencies of two on-site cleaning modes indicated that PL-007 cleaning helped to improve the effectiveness of subsequent acid cleaning in the removal of inorganic foulants. Furthermore, a spiral-wound NF membrane module harvested from the plant was unfolded and autopsied. The results showed that both anionic polyacrylamide (APAM) and crude oil were identified as the predominant organic matter on the membrane surface and collectively accounted for a substantial fraction (86.3%) in terms of dry weight. Additionally, dissolved organics with a high molecular weight were prone to accumulation on the membrane surface. Multivalent elements, including Mg, Ca, Al, Fe, and Si, were the primary inorganic species in the fouling layer. Among the inorganic elements, Si occupied a high proportion and existed in the form of SiO2 in the fouling layer. According to the autopsy results, organic fouling combined with inorganics was responsible for the decline in the flux.
机翻摘要
暂无翻译结果,您可以尝试点击头部的翻译按钮。
关键词/主题词
Nanofiltration;Oil-field wastewater;Performance;Fouling;Cleaning;
若您需要申请原文,请登录。

最新评论

暂无评论。

登录后可以发表评论

意见反馈
返回顶部