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384Polyferric Sulfate (PFS) 1. Product Overview: Polyferric Sulfate is an amorphous powdery solid ranging from light yellow to reddish-brown in color. It is highly soluble in water, forming a reddish-brown 10% (by weight) aqueous solution. It has st
Polyferric Sulfate is an amorphous powdery solid ranging from light yellow to reddish-brown in color. It is highly soluble in water, forming a reddish-brown 10% (by weight) aqueous solution. It has strong hygroscopicity and is widely used in purification processes for drinking water, industrial water, various industrial wastewater, municipal sewage, and sludge dewatering.
| Parameter | Type I - Liquid | Type I - Solid | Type II - Liquid | Type II - Solid |
|---|---|---|---|---|
| Density (g/cm³, at 20°C) | ≥1.45 | — | ≥1.45 | — |
| Total Iron Content (%) | ≥11.0 | ≥19.0 | ≥11.0 | ≥19.0 |
| Reducing Substances (as Fe²⁺) (%) | ≤0.10 | ≤0.15 | ≤0.10 | ≤0.15 |
| Basicity (%) | 8.0 – 16.0 | 8.0 – 16.0 | 8.0 – 16.0 | 8.0 – 16.0 |
| Insoluble Substances (%) | ≤0.3 | ≤0.5 | ≤0.3 | ≤0.5 |
| pH (1% aqueous solution) | 2.0 – 3.0 | 2.0 – 3.0 | 2.0 – 3.0 | 2.0 – 3.0 |
| Cadmium (Cd) (%) | ≤0.0001 | ≤0.0002 | — | — |
| Mercury (Hg) (%) | ≤0.00001 | ≤0.00001 | — | — |
| Chromium [Cr(VI)] (%) | ≤0.0005 | ≤0.0005 | — | — |
| Arsenic (As) (%) | ≤0.0001 | ≤0.0002 | — | — |
| Lead (Pb) (%) | ≤0.0005 | ≤0.001 | — | — |
Compared with other inorganic coagulants, Polyferric Sulfate offers the following advantages:
A new, high-quality, and efficient iron-based inorganic polymer coagulant.
Excellent coagulation performance, forms dense flocs and settles rapidly.
High purification efficiency, produces clean water; free from harmful substances like aluminum, chlorine, or heavy metals; no iron ion leaching into the water phase; non-toxic and safe.
Effectively removes turbidity, color, oil, water content, bacteria, odors, algae, COD, BOD, and heavy metals.
Wide applicable pH range (4–11); optimal working pH range is 6–9. Minimal change in water pH and alkalinity after treatment; low corrosiveness to equipment.
Performs well for slightly polluted water, algae-containing water, and low-temperature, low-turbidity raw water. Exceptional performance for high-turbidity water.
Requires low dosage, cost-effective—can reduce treatment cost by 20%–50%.
Since raw water quality varies, on-site testing or beaker experiments are recommended to determine optimal conditions and dosage.
Preparation:
Dissolve the solid PFS to a concentration of 10–30% in a solution tank, stir with tap water until fully hydrolyzed, and let it stand until a reddish-brown liquid forms. Then dilute to desired concentration for coagulation.
For water plants: Prepare 2–5% solution for direct dosing.
For industrial wastewater: Prepare 5–10% solution for dosing.
Dosage Determination:
Based on raw water quality; use beaker test or on-site testing to determine appropriate dosage by observing floc formation.
As a reference: solid PFS dosage is roughly equivalent to solid PAC and about 1/3 to 1/4 of solid aluminum sulfate.
If using a liquid product previously, adjust according to concentration (approx. weight ratio of 1:3).
Dosing:
Pump the prepared solution into a dosing tank and meter it into the raw water for coagulation.
Preparation Notes:
Use the solution on the same day it is prepared. Use tap water for solution preparation. Minor sediment is normal.
Packaging:
Solid: Packed in 25kg plastic woven bags with inner plastic film. Packaging is not reusable or priced.
Liquid: Transported by tankers or stored in ton barrels.
Storage:
Store in a dry, ventilated, and cool indoor area.
Handle with care during loading and unloading.
Keep packaging clean and intact. Damaged packaging leads to moisture absorption.
Shelf Life:
Solid: 2 years
Liquid: 6 months
Moisture-absorbed solid can still be used without affecting performance.
