Engineering demonstration of the remediation of urban water using a novel MES enhanced ecological floating bed: from construction to long-term performance

An innovative ecological floating bed coupled with sedimental microbial electrochemical system (ECOFB-MES) was designed for urban water remediation. The MES notably enhanced the total number of species and the bacteria diversity of polyester fibers and roots in the same coupled system. The dominant functional bacteria such as Pseudomonas, Gemmobacter, Aeromonas and Arthrobacter beneficial for oxygen reduction and nitrogen removal were found on biocathode, and this indicated that biocathode of present system could reduce nitrate mainly through heterotrophic nitrification and aerobic denitrification. Results from the president research indicated that the ECOFB-MES provides a rewarding reference for practical application of polluted urban water remediation.