Abstract:As one of the main water pollutants, the nitrogen removal from wastewater has been increasingly considered. Generally, traditional nitrogen removal process would lead to the highly cost, secondary pollution and the successive treatments. In contrast, the newly arising bio-electrochemical system(BES) based wastewater denitrification was being widely concerned, due to its energy saving, less sludge production, capable of simultaneous denitrification & desalination. In this study, three possible aspects as the configuration of BES reactor, the selection of electrode material and the optimization of BES operating parameters were all summarized and then compared. To further push the pilot application of BES based nitrogen removal, there is still a lot to do, such as to better the electron transfer efficiency, and to cut down the reactor manufacturing and operating costs.
