In order to solve the problem that manganese ion is difficult to remove when iron ion exists in common contact oxidations,removal efficiency and mechanism of manganese and iron ions with Fenton contact oxidation enhances filter media of quartz sand-manganese sand were investigated in the article.The results showed that Fenton reagent + manganese sand + quartz sand process for removing manganese and iron effect is better,the best numerical value of influence factors are as follows: joining H2O2 generate Fent...