本项目旨在通过电化学反应过程的产能技术，以尿素/铵盐为燃料、硝化产物硝酸盐为氧化剂组成氧化还原电池，研究处理城市废水为背景的自产电脱氮。发展电化学多介质催化反应体系，制备新型隔膜装置以实现简易、高效、稳定的污染物氧化还原电对产电的电极体系。设计新型的酸-碱混合电解液体系和合理的燃料电池型反应器，获得优化的产电和污染物去除条件，以促进含氮污染物的电化学降解并提高功率密度。此外，通过对瞬态物的检测和稳态中间产物分析，研究电催化的作用机理，构建电极特性与分子间激活的量效关系，进而建立新型的分析检测体系和电极性能评价方法。为自产电修复技术扩展应用于其它有机或重金属废水提供基础依据，为污染物处理中的节能减排提供技术支撑。

An electrochemical energy conversion technology will be established to retrieve energy from N-rich municipal wastewater. Here, urea/ammonia functions as fuel at anode and nitrate severs as electrons acceptor at cathode, forming a urea/nitrate redox cell. Nitrate and urea can be changed to nitroen gas over cathode and anode, respectively. Thus, N will be removed from water with self-generating electric current. The key points are developing suitable catalytic electrodes and hybrid membrane separator with low resistance toward highly-stable redox cell for fast energy conversion. In order to overcome the limitations of denitrification via biological treatment, a new designed acid-alkaline hybrid electrolyte will be used to improve the reaction rate, conversion efficiency of ammonia/nitrate/nitrite to nitrogen gas and the power density. Instantaneous and stable intermediates will be detected using chemical analysis techniques, proposing mechanisms of electrode reactions and dynamic models. This technology can possibly be applied to other organic or heavy-metal wastewater, and is a promising way to make wastewater treatment become a energy producer rather than a energy consumer.