... andMn 2.treat the ground water 3.high mechanical strength Manganese Sand Filter MediaIt is the best filters material that can ... , good chemical stability, long life cycle, high quality and stabilityUsed manganese ore as raw material, mnganese sand filter is made by ... %, mnganese sand filter can not only remove iron but also manganese; when MnO2 ≤ 30%, it can only be used for iron ...