Sewage water treatment with energy recovery using Constructed Wetland integrated with Bioelectrochemical System
In the present study, we investigated the role of the constructed wetlands (CWs) integration with the bioelectrochemical system (BES), which can concurrently treat the wastewater effectively with energy recovery. This CWs integrated system utilizes NH4+-N (96.66%), NO3- -N (83.09%), PO43- -P (91.04%) and SO42- (83.98%) to enable effective pollutants removal from sewage wastewater. Nitrite accumulation was not observed in the systems with applied voltage >15 mV and MFCs-ME. The ME-30-CWs system favour all the pollutants removals, except ammonia. The average, power density and the current density of 1.723 mWm−2 and 5.423 mAm−2 were recorded in MFC-CWs during wastewater treatment. The waterborne diseases causing Shigella sp. and Salmonella sp. were significantly eliminated in the CWs integrated system. The promising potential of CWs, bioelectrochemical technology can be an effective alternative to water-energy nexus for waste stream applications.