What is Ferrous Sulfate Heptahydrate?

Ferrous Sulfate Heptahydrate (FeSO₄·7H₂O) is a by-product generated during the production of titanium dioxide (TiO₂). Thanks to its reducing, coagulating and precipitating properties, it is widely used in water treatment, environmental protection, agriculture and various industrial processes.

As a cost-effective chemical reagent, ferrous sulfate heptahydrate plays an important role in wastewater treatment, heavy metal removal and sludge conditioning.

Growing Demand from the Water Treatment Industry

The wastewater treatment industry continues to expand due to stricter environmental regulations and increasing investments in municipal infrastructure.

More stringent discharge standards require wastewater treatment facilities to improve pollutant removal efficiency, while large-scale urban renewal and sewage network expansion projects are driving higher consumption of water treatment chemicals.

As a result, ferrous sulfate remains one of the most economical and effective solutions for wastewater treatment applications.

Key Applications

Water and Wastewater Treatment

Ferrous sulfate is widely used as:

• Coagulant and flocculant aid
• Decolorizing agent
• Heavy metal removal reagent
• Sludge conditioning chemical
• Reducing agent for industrial wastewater

It is particularly effective in treating wastewater containing chromium, high alkalinity and high color concentration.

Cement Industry

Ferrous sulfate can be used to remove soluble chromium compounds in cement production, helping manufacturers comply with environmental and safety requirements.

Agriculture

In agriculture, ferrous sulfate serves as:

• Soil amendment
• Iron fertilizer
• Micronutrient source for crops

It helps improve iron availability in soils and supports healthy plant growth.

Chemical Manufacturing

Ferrous sulfate is used as a raw material in the production of:

· Ferric oxide pigments

· Iron salts

· Battery precursor materials

· Chemical intermediates

Other Industrial Applications

Additional applications include:

· Electroplating industry

· Textile and dyeing wastewater treatment

· Paper manufacturing

· Fertilizer production

· Mining and metallurgy

Product Specifications

Actual specifications can be customized according to customer requirements.

Advantages of Ferrous Sulfate Heptahydrate

· Cost-effective treatment solution

· High coagulation and decolorization efficiency

· Effective heavy metal removal

· Wide industrial applicability

· Stable supply from titanium dioxide production

· Easy handling and storage

Main Application Areas

· Water purification

· Wastewater treatment

· Soil improvement

· Chromium removal

· Iron oxide pigment production

· Sulfuric acid roasting processes

· Battery precursor materials