Ferrous sulfate can be used to make iron salts, iron oxide pigments, mordants, water purifiers, preservatives, disinfectants, etc.;

1. Water treatment

Ferrous sulfate is used for the flocculation and purification of water, and to remove phosphate from urban and industrial sewage to prevent eutrophication of water bodies.

2. Reducing agent

A large amount of ferrous sulfate is used as a reducing agent, mainly reducing chromate in cement.

3. Medicinal

Ferrous sulfate is used to treat iron deficiency anemia; it is also used to add iron to food. Long-term excessive use may cause side effects such as abdominal pain and nausea. In medicine, it can also be used as a local astringent and blood tonic, and can be used for chronic blood loss caused by uterine fibroids.

4. Coloring agent

The production of iron tannate ink and other inks requires ferrous sulfate. The mordant for wood dyeing also contains ferrous sulfate; ferrous sulfate can be used to dye concrete to a yellow rust color; woodworking uses ferrous sulfate to stain maple with silver color.

5. Agriculture

Adjust the pH of the soil to promote the formation of chlorophyll (also known as iron fertilizer), which can prevent yellowing of flowers and trees caused by iron deficiency. It is an indispensable element for acid-loving flowers and trees, especially iron trees. It can also be used as a pesticide in agriculture to prevent wheat smut, scab of apples and pears, and rot of fruit trees; it can also be used as a fertilizer to remove moss and lichen on tree trunks.

6. Analytical Chemistry

Ferrous sulfate can be used as a chromatographic analysis reagent. To

1. Ferrous sulfate is mainly used in water treatment, flocculation purification of water, and removal of phosphate from urban and industrial sewage to prevent eutrophication of water bodies;

2. A large amount of ferrous sulfate can also be used as a reducing agent to reduce the chromate in cement;

3. It can adjust the pH of the soil, promote the formation of chlorophyll, and prevent yellowing of flowers and trees caused by iron deficiency. It is an indispensable element for acid-loving flowers and trees, especially iron trees.

4. It can also be used as a pesticide in agriculture, which can prevent wheat smut, scab of apples and pears, and rot of fruit trees; it can also be used as fertilizer to remove moss and lichen from tree trunks.

The reason why ferrous sulfate is mainly used in water treatment is that ferrous sulfate is highly adaptable to various water quality, and has a significant effect on the purification of micro-polluted, algae-containing, low-temperature and low-turbidity raw water, and it has a particularly good purification effect on high-turbidity raw water. The purified water quality is better than inorganic coagulants such as aluminum sulfate, and the water purification cost is 30-45% lower than that. The treated water has less salt, which is beneficial to ion exchange treatment.