When the concentration of iron in groundwater is too high, it will have some impact on our production and life, such as the water will become turbid and accompanied by iron smell, scale will easily form, and washed clothes will have rust spots, etc. Manganese can oxidize the iron in the water, oxidizing the soluble divalent iron in the water into insoluble trivalent iron and precipitating it for removal. In addition, manganese can also be used to purify arsenic in wastewater.

