This paper uses the potassium permanganate and the sodium sulfite compound reducing agent to make fresh manganese dioxide and processes each kind of turbidity raw water with it,inspects this fresh manganese dioxide s coagulate efficiency,the influencing factor and possible mechanism to reduce turbidity.

The high-purity manganese dioxide is prepared by leaching low-grade manganese ore with ferrous sulfate from by-product of titanium white,removing impurities,precipitating manganese carbonate,roasting manganese carbonate and refining manganese dioxide.

The main treatment of micro-polluted water resource was overviewed according to the current situation of China\'s water pollution,and pollution treatment technologies and mechanism of potassium permanganate oxidation were introduced.