Treatment of nitrogenous wastewater by constructed wetland coupled microbial fuel cell system: a review

Abstract

As global industrialization accelerates, the treatment of nitrogenous wastewater has become a pressing environmental challenge. In response to this challenge, this study explores the potential of constructed wetland coupled microbial fuel cell (CW-MFC) technology for the treatment of nitrogenous wastewater. It systematically presents the fundamental principles and characteristics of the CW-MFC, analyzing the metabolic processes and denitrification mechanisms of nitrogen pollutants within the system. This research not only summarizes the key factors that influence the denitrification performance of the CW-MFC system but also discusses its future development trends and potential applications. The objective is to refine the field of nitrogenous wastewater treatment using CW-MFC, enhancing the denitrification efficiency, and to provide a foundation for further advancing the practical application and scientific research of this technology. HIGHLIGHTS We found that integrated bioelectrochemical technology shows broad practical application potential in nitrogen-rich wastewater management.; The constructed wetland coupled microbial fuel cell (CW-MFC) mechanism in the treatment of nitrogenous wastewater and the optimal control of key factors in system operation were studied.; This study aims to steer future research and provide reference for further exploring the application of CW-MFC in the field of nitrogen-containing wastewater treatment.;

Keywords

• cw-mfc
• influencing factors
• nitrogenous wastewater
• treatment mechanism