Polyferric Sulfate
Polyferric Sulfate (PFS) Manufacturer & Bulk Supplier
Polyferric Sulfate (PFS, Fe2(OH)n(SO4)3-n/2) is a highly efficient inorganic polymer coagulant designed for municipal drinking water, industrial wastewater clarification, biological phosphorus removal, and sludge conditioning.
Unlike traditional monomer coagulants (such as Ferric Chloride or Aluminum Sulfate), PFS forms dense, rapidly settling flocs over a broad pH range (4.0 to 11.0) with significantly reduced residual iron and lower sludge production.
As an ISO-certified manufacturer, we supply both solid powder and liquid PFS grades tailored to your target water chemistry, dosing setup, and discharge compliance standards.
Factory & Supply Snapshot:
Annual Production Capacity: 80,000+ Metric Tons
Standards Compliance: GB/T 14591-2016 | EN 883 (Drinking Water Grade)
Quality Control: AAS Heavy Metal Testing | Automated Basicity Titration
Global Logistics: 25kg Anti-Moisture Bags, 1000kg IBC Totes, Bulk Liquid Tankers
Support Service: Free Lab Jar-Testing & Custom Specification Matching
Product Range & Technical Specifications
|
Specification Parameter |
Drinking Water Grade (Powder) |
Industrial Grade (Powder) |
Liquid PFS Grade |
Test Method / Reference |
|
Total Iron (Fe) Content |
≥ 19.5% |
≥ 19.0% |
≥ 11.0% |
Potassium Dichromate Titration |
|
Basicity (Hydroxylation Degree) |
10.0%–16.0% |
9.0%–14.0% |
8.0%–16.0% |
Acid-Base Titration Method |
|
Ferrous Iron (Fe²⁺) |
≤ 0.1% |
≤ 0.15% |
≤ 0.1% |
Permanganate Titration |
|
Water-Insoluble Matter |
≤ 0.3% |
≤ 0.5% |
≤ 0.2% |
Gravimetric Method |
|
pH (1% Aqueous Solution) |
2.0–3.0 |
2.0–3.0 |
1.0–2.0 |
Standard pH Meter |
|
Arsenic (As) |
≤ 0.0002% (2 ppm) |
≤ 0.0005% |
≤ 0.0001% |
AAS / ICP-OES |
|
Lead (Pb) |
≤ 0.001% (10 ppm) |
≤ 0.003% |
≤ 0.0005% |
AAS / ICP-OES |
|
Cadmium (Cd) |
≤ 0.0002% (2 ppm) |
≤ 0.0005% |
≤ 0.0001% |
AAS / ICP-OES |
|
Chromium (Cr) |
≤ 0.0005% (5 ppm) |
≤ 0.001% |
≤ 0.0002% |
AAS / ICP-OES |
|
Physical Appearance |
Light Yellow Powder |
Yellowish Granular |
Reddish-Brown Liquid |
Visual Inspection |
Key PFS Parameters: Technical Insights for Buyers
Total Iron Content (Fe %) & Active Cost Efficiency
Total Iron determines the active coagulant strength. 1 ton of 19.5% Fe PFS powder yields substantially more coagulating power than lower-grade alternatives.
Buyer Action: Always evaluate Chemical Cost per m3 Treated Water = (PFS Unit Price x Actual Dosage Rate) rather than price per bag.
Basicity & Floc Hydrolysis Dynamics
Basicity represents the polymeric hydroxyl bridge structure. Higher basicity improves particle bridging and settling velocity, but excessive basicity compromises product stability during prolonged storage.
Target Balancing: Our production maintains basicity precisely between 10% and 16% to guarantee both high performance and 12-month shelf stability.
Fe2+ (Ferrous Iron) Control
Residual Fe2+ indicates incomplete oxidation during synthesis. High Fe2+ levels reduce coagulation efficiency and cause unwanted color carryover in treated water.
QA Guarantee: Every production batch undergoes oxidation verification to keep Fe2+ strictly under 0.15%.
Water-Insoluble Matter & Dosing System Protection
Insoluble matter causes nozzle clogging, pump abrasion, and excessive sludge accumulation in chemical feed tanks.
Process Fit: Our fine-milling and micro-filtration processes keep water-insoluble content under 0.3% for dry grades and under 0.2% for liquid grades.
Primary Industrial & Municipal Applications
Municipal Wastewater & Phosphorus Removal
PFS reacts rapidly with soluble orthophosphates to form insoluble FePO4 precipitates, lowering total phosphorus (TP) to compliance levels (< 0.5 mg/L).
Key Advantage: Requires less alkalinity consumption compared to Aluminum Sulfate (Alum), reducing lime or caustic dosing costs.
Industrial Effluent Clarification & Color Removal
Effective for high-turbidity and highly colored industrial streams:
- Textile & Dyeing Wastewater: Decolorization of azo and reactive dyes.
- Electroplating & Metal Finishing: Heavy metal co-precipitation (Cr, Ni, Cu).
- Paper & Pulp Effluents: Removal of lignin, COD fractions, and fine fibers.
- Oily Effluents & Mining Tailings: Rapid oil-water emulsion breaking and heavy suspended solids settling.
Free Laboratory Jar-Testing & Grade Matching Support
Because wastewater characteristics vary significantly between plants, selecting the correct PFS grade and dosage requires empirical testing.
We offer full laboratory evaluation services for engineering contractors and end-users:
Send us your raw water / wastewater parameters (pH, TSS, COD, TP, Turbidity).
Our chemical engineers will run comparative jar tests to determine optimal PFS basicity and dosing rates.
We ship free 200g to 500g trial samples with an accompanying technical recommendation report.
Quality Assurance & Traceability Sequence
To protect continuous plant operations from batch variance, our manufacturing site operates under full quality control protocols:
Raw Material Inspection (FeSO4, Sulfuric Acid, Catalysts)
|
Pre-Polymerization Synthesis & Temperature Control
|
Oxidation & Polymer Hydrolysis
|
Micro-Filtration (Insoluble Separation)
|
Spray Drying & Granulation (Powder Grades)
|
Laboratory QC Testing (AAS Heavy Metals, Titration, Viscosity)
|
Moisture-Proof Automated Packaging & Batch Stamping
|
Issued COA & Shipment Clearance
Quality Commitments for Buyers:
Heavy Metal Safety: Strictly verified by Atomic Absorption Spectroscopy (AAS) for drinking water compliance.
Batch Traceability: Each bag or drum carries a unique lot code linked directly to raw material lots and production test logs.
Shelf-Life Warranty: Sealed dry powder carries a 12-month performance guarantee under dry storage.
Solid PFS Powder: 25 kg multi-layer PP woven bags with inner PE liner; 1000 kg FIBC jumbo bulk bags. Palletized and stretch-wrapped for maritime transport.
Liquid PFS: 1000 L IBC totes, 200 L PE drums, or ISO tank containers.
Storage Recommendations: Keep sealed in a cool, ventilated warehouse. Protect solid powder from moisture and direct rainfall. Liquid PFS should be stored in anti-corrosion tanks (PVC, PE, or FRP).
Technical Documentation Provided with Supply
- Certificate of Analysis (COA) per production batch
- Technical Data Sheet (TDS)
- GHS-Compliant Safety Data Sheet (SDS)
- Certificate of Origin (Form E, Form A, or Standard CO)
- Third-Party Inspection Reports (SGS, Intertek) upon request
Request a Bulk Quotation & Technical Proposal
If you are sourcing Polyferric Sulfate for a treatment plant, chemical distribution, or engineering project, contact our export department with your requirements:
Required PFS Grade / Fe Content (e.g., 19.5% Powder or 11% Liquid)
01
Application Type (Municipal Wastewater, Drinking Water, Industrial Effluent)
02
Estimated Order Quantity & Monthly/Annual Demand
03
Packaging Preference (25kg bags, Jumbo bags, IBC Totes)
04
Destination Port / Country
05
FAQ