生物电化学系统从废水中回收氨的研究进展

Advances in the recovery of ammonia from wastewater by bioelectrochemical systems

氨(NH;)是引起水生生物毒害的主要因素,又是工业生产肥料的重要原料,因此,从废水中回收氨成为了研究重点。相较于传统氨回收工艺,生物电化学系统(BES)在处理废水的同时可回收有用资源,降低了处理成本与能耗,从而受到广泛关注。首先,介绍了BES回收氨的机理,并对其回收性能进行了评价;其次,阐述了BES回收氨过程中影响回收效率的主要因素;最后,讨论了今后可能面临的挑战,以便扩大规模并应用于实践。

Ammonia is the main factor causing the toxicity of aquatic organisms and an important raw material for industrial fertilizer production. Therefore,the recovery of ammonia from wastewater has become a research focus. Compared with the traditional recycling process,the bioelectrochemical system(BES)can recover useful resources while processing wastewater,reducing the processing cost and energy consumption,and thus has attracted widespread attention. Firstly,the mechanism of ammonia recovery by BES was introduced,and its recovery performance was evaluated. Secondly,the main factors affecting the recovery efficiency in the process of BES ammonia recovery were explained. Finally,the challenges that might be faced in the future are discussed in order to scale up and apply the technology to practice.