The reaction principle of metal air battery is expounded, and the application of this method in the field of water treatment as an emerging technology is introduced. The recent research results of domestic and foreign researchers using metal-air battery technology to treat pollutants in water (such as removing arsenic, reducing COD and collecting algae in water) are introduced, and the actual treatment effects of these methods are briefly described. The feasibility of applying metal-air battery technology to water treatment is analyzed. At the same time, the problems of water treatment using metal-air battery are pointed out. The broad application prospects of this technology are analyzed and prospected.
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