About the function and working principle of iron manganese water filter media in water treatment system

1. Why choose iron manganese water filter media in the water treatment process

The ferrous ions in the source water that need to be treated are hidden in the source water (underground (well) water, mountain spring water, hot spring water, industrial water, etc.) in the nature of Fe2+. There is a strange color and odor, and it will generate iron scale and corrode the equipment for a long time, which will affect the production of the later process.

The source water with manganese exceeding the standard will stain the surface of utensils, pipes, containers and other carriers black after long-term use, accompanied by delamination (it is recommended to judge the content of manganese in the source water by testing).

In ion exchange equipment for water softening and water purification, excessive iron ions and manganese content will cause ion exchange resins to be polluted, thereby reducing exchange capacity, reducing water output capacity, reducing efficiency, and reducing the use cycle of exchange resins. Long production cycles will also Generate iron scale, affect heat transfer, and can corrode equipment.

Excessive iron and manganese will also block the RO membrane of the RO system, reduce the service life of the RO membrane, and affect the quality of the RO water. Therefore, the excessive iron and manganese ions in the water need to be pre-treated before entering the ion exchange system and RO system. Treatment, can reduce iron and manganese ion content in raw water by removing iron and manganese manganese sand filter material

2. The working principle of iron manganese water filter

When the source water with excessive iron and manganese content passes through the surface of the manganese sand filter material for a long time, an iron and manganese filter membrane will be formed on the surface of the manganese sand filter material. The formed iron and manganese filter membrane has catalytic effect on iron and manganese in water.

Principle of iron removal: Manganese sand filter media for iron removal oxidizes ferrous iron to ferric iron through catalysis, and ferric iron undergoes hydrolysis reaction in water, and the insoluble compound ferric hydroxide is precipitated, so as to achieve the purpose of iron removal.

The principle of manganese removal: through the equipment, the source water is contacted with the manganese sand filter material to speed up the oxidation speed, so that the divalent manganese in the source water is oxidized to high-valent manganese and removed under the condition of lower pH value. And according to the rule that the sol particles preferentially adsorb the same or similar particles as it, the manganese sand filter material with high manganese dioxide content can well absorb manganese ions in water.

Relevant studies have shown that high-content manganese dioxide filter material absorbs manganese ions and oxidizes them into tetravalent oxides of manganese to precipitate to achieve the effect of filtering. Fix this happening.

3.Iron and manganese removal water treatment system Similar photo

Natural iron manganese filter media contains MnO2, which is a good catalyst for the oxidation of Fe2+ to Fe3+. It has a unique effect on the removal of iron and manganese from drinking water and groundwater, and is often used in filtration devices for iron and manganese removal.

Natural iron manganese water filter material with manganese content (calculated as MnO2) not less than 35% can be used for both iron and manganese removal from groundwater; natural manganese sand filter material with manganese content of 20%~30% It is suitable for removing iron from groundwater; it should not be used if the manganese content is less than 20%.

More information about the iron manganese water filter system

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