Influence of Electrodes Configuration on Hydraulic Characteristics of Constructed Wetland–Microbial Fuel Cell Systems Using Graphite Rods and Plates as Electrodes

Constructed wetland–microbial fuel cell coupling systems (CW–MFCs) have received significant academic interest in the last decade mainly due to promotion of MFCs relation pollutants’ degradation CWs. Firstly, we investigated effect hydraulic retention time (HRT) and electrode configuration on flow field characteristics CW–MFCs using graphite rods plates as electrodes, well optimization computational fluid dynamics (CFD) numerical simulation. The results showed that: (1) apparent HRT was most influential decisive factor, with a contribution over 90% for average CW–MFCs; (2) anode spacing factor performance CW–MFCs, contributions 50% water divergence efficiency (λ) 45% effective volume ratio (e); (3) size e λ, 20%; (4) cathode position had no statistically CW–MFCs. It through blocking flows, flows around, compressing channels boundary layer separation that MFC electrodes influenced Optimizing by optimizing helped facilitate electricity generation removal This study offers scientific reference improving it also provides new research perspective wastewater treatment production