Combination of magnetic field and ultraviolet for fouling control in saline wastewater distribution systems

文献类型： 外文期刊

第一作者： Liu, Zeyuan

作者： Liu, Zeyuan;Xiao, Yang;Zhou, Yunpeng;Hou, Peng;Zha, Yingdong;Li, Yunkai;Liu, Zeyuan;Xiao, Yang;Zhou, Yunpeng;Hou, Peng;Zha, Yingdong;Li, Yunkai;Liu, Zeyuan;Yu, Ruihong;Qu, Shen;Liu, Zeyuan;Yu, Ruihong;Qu, Shen;Muhammad, Tahir;Ma, Changjian

作者机构：

关键词： Saline wastewater; Biofouling; Particulates; Precipitates; Ultraviolet; Magnetic field

期刊名称：WATER RESEARCH （ 影响因子：12.8； 五年影响因子：13.3 ）

ISSN： 0043-1354

年卷期： 2024 年 251 卷

页码：

收录情况： SCI

摘要： Fouling is a significant challenge for recycling and reusing saline wastewaters for industrial, agricultural or municipal applications. In this study, we propose a novel approach of magnetic field (MaF) and ultraviolet (UV) combined application for fouling mitigation. Results showed, combination of MaF and UV (MaF-UV) significantly decreased the content of biofouling and reduced the complexity of microbial networks, compared to UV and MaF alone treatments. This was due to MaF as pretreatment effectively reduced the water turbidity, improve the influent water quality of UV disinfection and increases UV transmittance, eliminating the adverse impacts of UV scattering and shielding, hence increased the inactivation effectiveness of UV disinfection process. MaF assisted UV also reduced the abundance of UV-resistant bacteria and inhibited the risk of bacterial photoreactivation and dark repair. Meanwhile, MaF-UV drastically reduced the contents of precipitates and particulate fouling by accelerating the transformation rate of CaCO3 crystal from compact calcite to loosen hydrated amorphous CaCO3, and enhancing the flocculation process. These findings demonstrated that MaF-UV is an effective antifouling strategy, and provide insights for sustainable application of saline wastewaters.

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