35% Manganese Green Sand for iron removal

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.The average density of natural manganese sand filter material is generally in the range of 3.2g/cm3 to 3.6g/cm3. Except for those with special density requirements during use. The hydrochloric acid solubility of natural manganese sand filter material should not exceed 3.5% (percentage by mass, the same below). The sum of the crushing rate and wear rate of natural manganese sand filter material should not exceed 3%. Natural manganese sand filter material should be free of visible soil, shale, and foreign debris, and the mud content should not exceed 2.5%. The water leachate of the filter material should not contain any toxic or harmful substances to the human body.