The polymerization iron sulfate condensation performance is good, Precipitates speed is quick, adapts the PH value scope is broad, simultaneously also has the decolorization, deodorizes, removes the heavy metal ion, remarkably reduces effect and so on COD, BOD. Therefore widely uses in the cities life tap water, industry Circulates water purification processing, as well as the chemical industry, the petroleum, the mine, the papermaking, the printing, brews, the steel and iron, the coal Gas, profession the and so on galvanization industrial waste and city life sewage purification processing, all can achieve the ideal purification effect to the different local different type source water.