When the sewage treatment adopts the Fenton oxidation process, ferrous sulfate is used as a catalytic carrier in combination with hydrogen peroxide.
2. 污泥处理过程中，作为污泥性质改良剂使用，可以降低脱水污泥的含水率
In the sludge treatment process, as a sludge property improver, the moisture content of the dewatered sludge can be reduced.