WUYan-fang,TANYing-shi,ZHENGXin-xu,et al.Aeration of Fluidized Birnessite Coupling Immersion Ceramic Ultrafiltration Membrane for Manganese Removal from Groundwater[J].China Water & Wastewater,2024,40(5):1-8.
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Aeration of Fluidized Birnessite Coupling Immersion Ceramic Ultrafiltration Membrane for Manganese Removal from Groundwater

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第5期 Page: 1-8 Column: Date of publication: 2024-03-01
Author(s):
WU　Yan-fang;  TAN　Ying-shi;  ZHENG　Xin-xu;  ZHENG　Jia-le;  CHEN　Jia-qi;  ZHANG　Xin-yi;  YANG　Shu-han;  DU　Xing
（School of Civil and Transportation Engineering， Guangdong University of Technology， Guangzhou 510006， China）
Keywords:
solar energy;  manganese removal;  birnessite;  ceramic ultrafiltration membrane;  aeration
Abstract:
Excessive manganese in drinking water not only causes sensory problems, but also has negative effects on human health. In this study, solar power was used as the energy source to drive an aeration system, which could fluidify birnessite and then built an integrated equipment for manganese removal with immersion ceramic ultrafiltration membrane. Specifically, manganese oxides with excellent adsorption capacity and catalytic oxidation ability were prepared in situ in the filtration cell for anti-oxidation ceramic membrane. Both the manganese oxidizing bacteria concentrated by membranes in the initial stage of filtration and the aeration-enhanced birnessite in suspension could favor the removal of manganese. The energy provided by solar power system could meet the demand of the electricity for aeration, with a maximum output of 48.29 W·h/d, which enabled the aeration pump to produce 241.45 L gas. This integrated equipment could effectively remove manganese ions from groundwater. The concentration of manganese ions in effluent was less than 0.008 mg/L and 98% removal rate was achieved when the influent manganese ion concentration was less than 0.5 mg/L. At the end of the experiment, the water purification efficiency remained stable when the membrane flux was stabilized at 20 L/(m2·h). The microbial analysis results showed that there were a large number of manganese oxidizing bacteria in the system. The results of XPS, XRD, Raman and SEM-EDS analysis showed that the formation and the maturation of birnessite could improve the manganese removal.
Last Update: 2024-03-01