Manganese sand filter media has the best gradation proportion of water treatment filter material, so that it has the largest specific surface area, the strongest sewage interception capacity, the largest catalytic oxidation effect and the minimum backwash loss rate in the unit volume. The manganese sand filter material has a rough appearance, is brown or pale grey, and is usually used as a filtration device for removing iron and manganese in drinking water. The water filtration effect is very good. (Note: MnO2 = 35% can remove iron and manganese, MnO2 less than 30% can only be used for groundwater in addition to iron and manganese sand filter is mainly used for)

Reduce the total iron and manganese manganese content in water, groundwater in some areas of China's iron content is 5 ~ 10mg/L, there are up to 20 ~ 30mg/L, manganese content is 0.5 ~ 2.0mg/L, even more than 2mg/L each of up to 5 ~ 10mg/L was found. The standard of drinking water in our country stipulates that the content of iron in drinking water should not exceed 0.3mg/L, and the content of manganese should not exceed 0.1mg/L, which must be dealt with more than once. Therefore, when the content of iron and manganese in groundwater exceeds the standard, the color of water will change, and it will cause great impact on water consumption.

Manganese ore with manganese content less than 20% should not be adopted. Because of the different water quality in different areas, it is better to use scientific test or production practice to prove that the natural manganese sand varieties with good iron removal and manganese removal effect can be obtained. The best material for removing iron and manganese is the filter material