Abstract
Constructed wetland (CW) is an effective ecological technology to treat water pollution and has the significant advantages of high impact resistance, simple construction process, and low maintenance cost. However, under extreme conditions such as low temperature, high salt concentration, and multiple types of pollutants, some bottlenecks exist, including the difficulty in improving operating efficiency and the low pollutant removal rate. Microbial electrochemical technology is an emerging clean energy technology and has the similar structure and pollutant removal mechanism to CW. Microbial electrochemistry combined with CW can improve the overall removal effect of pollutants in wetlands. This review summarizes characterization methods of microbial electrochemistry-enhanced constructed wetland systems, construction methods of different composite systems, mechanisms of single and composite systems, and removal effects of composite systems on different pollutants in water bodies. Based on the shortcomings of existing studies, the potential breakthroughs in microbial electrochemistry-enhanced constructed wetlands are proposed for developing the optimization solution of constructed wetlands.
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The authors greatly appreciated the support from the National Natural Science Foundation of China (51909157), Open Foundation of Hebei Key Laboratory of Wetland Ecology and Conservation, and Shanghai River and Lake Biological Chain Construction and Resource Utilization Engineering Technology Research Center (20DZ2250700).
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Xiao Li and Mengqi Cheng wrote the main manuscript text. Xiangxiang Jiao collected and sorted out the literature. Zhimiao Zhao and Yinjiang Zhang put forward ideas and determined the framework. Xueqing Gao checked the manuscript. All authors reviewed the manuscript.
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Li, X., Cheng, M., Jiao, X. et al. Advances in microbial electrochemistry-enhanced constructed wetlands. World J Microbiol Biotechnol 38, 239 (2022). https://doi.org/10.1007/s11274-022-03413-2
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DOI: https://doi.org/10.1007/s11274-022-03413-2