Iron and Manganese Removal Filter Principle

Detailed Description: Iron and Manganese Removal Filter – Water Treatment Equipment. Under anaerobic conditions, organic matter in groundwater dissolves iron, and ferric oxides are reduced, resulting in a large amount of iron entering the groundwater. Iron and manganese often coexist in water. my country's drinking water standards stipulate that iron content ≤ 0.3 mg/L and manganese content ≤ 0.1 mg/L. Long-term consumption of water with high iron and manganese content is detrimental to human health, affects product quality in textiles, papermaking, brewing, and food industries, causes stains on items, and corrodes equipment. Therefore, iron and manganese removal treatment is necessary.

Working Principle: Iron exists in water as Fe2+ ions. Fe2+ ions easily contaminate ion exchange resins, poisoning them and reducing their exchange capacity. Upon heating, iron scale easily forms on heated surfaces, affecting heat transfer and corroding equipment. Groundwater or well water with excessive iron content will have an unpleasant odor.

Iron and manganese removal filters utilize the redox reaction between MnO2 and Fe2+ in natural manganese sand. This reaction converts Fe2+ to Fe3+, forming Fe(OH)3 precipitate, which is then removed by the filter's backwashing function.

4MnO2 + 3O2 = 2Mn2O7

Mn2O7 + 6Fe2++3H2O = 2MnO3 + 6Fe3++6OH-

Fe3++3OH- = Fe(OH)3↓

Applications: Food, beverage, textile, paper, and brewing industries; treatment of water with excessive iron content; groundwater and well water for iron removal.