Yellow Solid Polyferric Sulfate Wastewater Treatment

Polyferric Sulfate (PFS), represented chemically as [Fe₂(OH)ₙ(SO₄)₃−n/₂]ₘ, serves as an inorganic polymeric coagulant widely employed in water and wastewater treatment applications.

Its production involves the polymerization of ferric sulfate (Fe₂(SO₄)₃) in a controlled environment, resulting in the formation of a high-molecular-weight compound with superior coagulation characteristics.

Compared to conventional coagulants such as Aluminum Sulfate (alum) or ferric chloride, PFS is recognized for its cost-effectiveness and eco-friendliness, making it a preferred choice in both industrial and municipal water treatment processes.

With a unique composition that integrates hydroxyl and sulfate groups along with iron ions, PFS efficiently eliminates contaminants by leveraging charge neutralization, adsorption, and flocculation mechanisms.

Features:

High Coagulation Efficiency
PFS demonstrates exceptional coagulation performance owing to its highly charged polymeric species (e.g., [Fe₃(OH)₄]⁵⁺) that promptly destabilize colloidal particles and organic substances present in water.

Wide pH Adaptability
In contrast to regular coagulants, PFS retains its efficacy throughout a wide pH spectrum (4–10), thereby decreasing the necessity for pH adjustments in treatment systems.

Low Residual Iron Content
PFS produces denser and faster-settling flocs when compared to ferric chloride or alum, thereby reducing residual iron levels in treated water.

Environmental Safety
Being non-toxic and devoid of harmful byproducts (e.g., aluminum residues associated with health issues), PFS corresponds with sustainable water treatment methods.

Cost-Effectiveness
Lesser quantities are needed compared to traditional coagulants, resulting in reduced operational expenses.

Multifunctional Performance
Efficient in eliminating turbidity, organic substances, phosphorus, heavy metals, and colorants.

Applications:

Drinking Water Treatment
Removes suspended solids, algae, and organic contaminants to meet potable water standards.
Reduces disinfection byproduct precursors (e.g., trihalomethanes).

Industrial Wastewater Treatment
Textile/Printing Wastewater: Eliminates dyes and COD (Chemical Oxygen Demand).
Electroplating/Mining Wastewater: Precipitates heavy metals (e.g., Pb²⁺, Cu²⁺, Cr⁶⁺).
Paper/Pulp Wastewater: Controls lignin and colloidal impurities.

Municipal Sewage Treatment
Enhances sludge dewatering and reduces sludge volume.
Efficiently removes phosphorus to prevent eutrophication.

Stormwater and Agricultural Runoff Management
Treats non-point source pollution by adsorbing pesticides and nutrients.

Oil-Water Separation
Breaks oil emulsions in petrochemical or food processing effluents.

Advanced Treatment Processes
Used as a coagulant aid in membrane filtration or electrocoagulation systems.