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4. Iron and manganese removal filter
4. Iron and manganese removal filter
Product details
1、 Overview
Iron and manganese exist almost simultaneously in underground (well) water. When the iron content in the water is high, the water has a rust smell, which affects the taste of the water. As a production water for papermaking, textiles, printing and dyeing, chemicals, and fine leather, it can reduce product quality. Iron containing iron can cause rust spots on production tools, yellow or brownish yellow stains on laundry, and iron sediment Fe2O3 can grow iron bacteria, block pipelines, and sometimes produce red water. Water with high manganese content is similar to water with high iron content, which can cause discoloration, odor, and damage to the quality of industrial products such as textiles, papermaking, brewing, and food. Household appliances can be contaminated with brown or black color, and washing clothes may have slight black or light gray stains. For this reason, China's "Sanitary Standards for Drinking Water" (GB5749-85) stipulate that the iron content should be ≤ 0.3 mg/L and the manganese content should be ≤ 0.1 mg/L. Raw water that exceeds the standards must undergo iron and manganese removal treatment. Long term consumption of water with high iron and manganese content can also affect physical health.
2、 Working principle
Water with high iron and manganese content is generally treated with catalysts (such as manganese sand) to oxidize dissolved divalent iron or divalent manganese into insoluble trivalent iron or tetravalent manganese compounds, respectively. The backwash function of the manganese sand filter is used to achieve the purpose of removal and purification.
Iron and manganese exist almost simultaneously in underground (well) water. When the iron content in the water is high, the water has a rust smell, which affects the taste of the water. As a production water for papermaking, textiles, printing and dyeing, chemicals, and fine leather, it can reduce product quality. Iron containing iron can cause rust spots on production tools, yellow or brownish yellow stains on laundry, and iron sediment Fe2O3 can grow iron bacteria, block pipelines, and sometimes produce red water. Water with high manganese content is similar to water with high iron content, which can cause discoloration, odor, and damage to the quality of industrial products such as textiles, papermaking, brewing, and food. Household appliances can be contaminated with brown or black color, and washing clothes may have slight black or light gray stains. For this reason, China's "Sanitary Standards for Drinking Water" (GB5749-85) stipulate that the iron content should be ≤ 0.3 mg/L and the manganese content should be ≤ 0.1 mg/L. Raw water that exceeds the standards must undergo iron and manganese removal treatment. Long term consumption of water with high iron and manganese content can also affect physical health.
2、 Working principle
Water with high iron and manganese content is generally treated with catalysts (such as manganese sand) to oxidize dissolved divalent iron or divalent manganese into insoluble trivalent iron or tetravalent manganese compounds, respectively. The backwash function of the manganese sand filter is used to achieve the purpose of removal and purification.
- 4Fe2++O2+10H2O 4Fe(OH)3+8H+
- 2Mn2++O2+2H2O 2MnO2+4H+
3、 Technical requirements
The natural manganese sand filter used for removing iron and manganese from groundwater should have manganese oxide as the main form of manganese. Natural manganese sand filter with manganese content (calculated as MnO2) not less than 35% can be used for both iron and manganese removal in groundwater; Natural manganese sand filter with a manganese content of 20% to 30% is only suitable for iron removal in groundwater; Manganese ore sand with a manganese content of less than 20% should not be used; It is advisable to prioritize using natural manganese sand varieties that have been scientifically tested or proven to achieve good iron and manganese removal effects in production as filter media.
4、 Product Description
According to user requirements, we will develop a detailed process plan for you, select the most suitable filter device, determine the manganese sand filling amount and filter layer thickness, and achieve low cost, high efficiency, and water production that meets water standards.
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