[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials, storage methods, advantages of polymeric ferric sulfate

Polymeric ferric sulfate properties

Polyferric sulfate (Polyferric Sulfate,PFS) is an inorganic polymer flocculant with unique chemical and physical properties. Its chemical formula is usually expressed as [ \text{[Fe 2(OH) n(SO 4) {3-n/2}]_m} ], where the values of n and m vary depending on the preparation method and use. PFS is usually a light yellow or brownish-yellow solid, readily soluble in water, and the solution formed in water is acidic. It has a high relative molecular mass, typically in the range of 500-5000, which gives it a strong adsorption and agglomeration capacity. PFS can show good flocculation effect in different pH range, especially suitable for neutral to weak acid water.

Polymeric ferric sulfate uses

Polyferric sulfate is mainly used in the field of water treatment and is an efficient flocculant. It is widely used in the treatment of drinking water, industrial wastewater and municipal sewage, and can effectively remove suspended solids, heavy metal ions and organic pollutants in water. Compared with the traditional iron salt and aluminum salt flocculants, PFS has higher flocculation efficiency and lower residual iron ion concentration. PFS is also used as a pulp purification and retention aid in the paper industry, as a catalyst in chemical production, and as a stabilizer in soil improvement.

Upstream raw materials

The production of polymeric ferric sulfate mainly depends on the following upstream raw materials: sulfuric acid, iron powder or iron filings, and water. Sulfuric acid is a key raw material for the manufacture of PFS, which reacts with iron to produce ferric sulfate. Iron powder or iron filings provide a source of iron, which is oxidized to form ferric ions during the reaction. In the preparation process, water not only serves as a reaction medium, but also plays an important role in the subsequent polymerization and dilution process. In order to improve product quality and production efficiency, manufacturers may add some auxiliary raw materials, such as stabilizers and catalysts, as needed.

Downstream Products and Applications

The main downstream products of polymeric ferric sulfate are various high-efficiency water treatment agents and industrial chemicals. In the field of water treatment, PFS is further processed into solutions of different concentrations to meet the needs of different application scenarios. For example, high concentrations of PFS solutions are used to treat highly polluted industrial wastewater, while low concentrations are used for drinking water treatment. PFS is also used in the production of composite flocculants, through the use of other flocculants, to further improve the treatment effect and economic benefits.

POLYMERIC FERRIC SULFATE STORAGE METHOD

Due to the strong moisture absorption and acidity of polymeric ferric sulfate, its storage requires special attention. PFS is typically stored in solid or solution form. Solid PFS should be stored in a dry, well-ventilated warehouse to prevent moisture and clumping. PFS in solution form should be stored in corrosion-resistant storage tanks. Common materials include glass fiber reinforced plastic, plastic or stainless steel. The storage environment should avoid high temperature and direct sunlight to prevent the decomposition and deterioration of the product. PFS shall be packaged in a sealed package during transportation to avoid leakage and contamination, and shall be marked with hazardous chemicals.

POLYMERIC FERRIC SULFATE MARKET PROSPECT

With the enhancement of environmental protection awareness and the growth of water treatment demand, the market prospect of polyferric sulfate is broad. Its high efficiency, low residue and wide application range in water treatment make it a popular flocculant in the market. Especially in emerging markets and developing countries, the process of industrialization and urbanization is accelerating, and the demand for high-efficiency water treatment agents is increasing. With the progress of technology and the optimization of production process, the production cost of PFS is gradually reduced, which further promotes its market popularization and application.

POLYMERIC FERRIC SULFATE: ENVIRONMENTAL IMPACTS

Although polyferric sulfate has significant advantages in the water treatment process, its use and production also have a certain impact on the environment. In the process of use, the residual iron ions and acidic substances may cause secondary pollution to the water body, so it is necessary to strictly control the dosage and follow-up treatment measures. The waste liquid and waste residue produced in the production process need to be properly treated to prevent environmental pollution. Compared with traditional flocculants, PFS has less impact on the environment due to its high efficiency and low dosage, and its advantages in application make it an important boost in the field of environmental protection.

Technology Development and Innovation

With the progress of science and technology, the production technology and application fields of polymeric ferric sulfate are also expanding. Current research directions include improving the purity and performance of products by improving the production process, developing new composite flocculants to enhance the treatment effect, and exploring the application potential of PFS in more fields. For example, combining PFS with other environmentally friendly materials to prepare environmentally friendly materials with multiple functions has become one of the research hotspots. By means of nanotechnology and biotechnology, the performance and application scope of PFS are further improved, which also brings new opportunities for its future development.

Conclusion

As an efficient and environmentally friendly flocculant, polyferric sulfate plays an important role in water treatment and industrial production due to its unique chemical properties and a wide range of applications. Its upstream raw material supply is sufficient, downstream products are widely used, and the market prospect is considerable. Pay attention to moisture-proof, corrosion-proof and safe operation during storage and use. With the continuous progress of technology and the improvement of environmental protection requirements, the production process and application technology of polyferric sulfate will continue to innovate and make greater contributions to environmental protection and resource utilization.