The Difference Between Quartz Sand Filter And Manganese Sand Filter

Quartz sand filter

Quartz sand filter, as the name suggests, is filled with quartz sand filter material. Quartz sand mainly intercepts impurities such as sediment in the water through interception and filtration. Quartz sand is different from ordinary sand because it has a strong hardness and particles can be relatively fine. If ordinary quartz sand is used, it is easy to break after backwashing and washing, and the sand loss is more serious over time. Although manganese sand has a high packing density, its strength is not as strong as quartz, so it is definitely not as effective as quartz sand in filtering and removing impurities such as iron and manganese.

Manganese sand filter

Manganese sand filter, also known as, is mainly used for removing iron and manganese ions. It mainly filters iron and manganese in water through interception and adsorption. Iron and manganese ions can be filtered and removed by manganese sand after aeration oxidation.
Water with high iron and manganese content is generally used to oxidize dissolved divalent iron or divalent manganese into insoluble trivalent iron or tetravalent manganese compounds under the action of oxidation. The adsorption filtration of manganese sand filters can remove iron and manganese. The chemical reactions that occur during his oxidation process are as follows:

4Fe2++O2+10H2O=4Fe(OH)3+8H+
2Mn2++O2+2H2O=2MnO2+4H+

Operating parameters of quartz sand filter and manganese sand filter

Overall, quartz sand filters and quartz sand filters operate under the same conditions, with inlet water pressure of 3-4kg and normal temperature. The filter tank is usually made of stainless steel and carbon steel lining rubber materials, or epoxy anti-corrosion treatment. The main difference is that the filtration flow rate is different. The maximum flow rate of the quartz sand filter can reach 20m/h, while the maximum flow rate of the manganese sand filter is 10m/h. Therefore, when dealing with the same amount of water, the diameter of the quartz sand filter tank should be smaller and the amount of quartz sand filling should be less. In terms of filter material cost, manganese sand has a higher filter material cost and a higher packing density. So, replacing quartz sand filters with manganese sand filters is also very uneconomical from an economic perspective. From the perspective of filtration, quartz sand filters cannot replace manganese sand filters because their effectiveness in removing iron and manganese is far inferior to that of manganese sand filters.

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