Polyaluminium Chloride (PAC / PAFC) in Glass Processing Wastewater Treatment

Unique Challenges of Glass Processing Wastewater

Glass wastewater differs fundamentally from organic wastewater.

Typical Features

• Very high pH (>10)
• Large amount of ultra-fine glass particles
• Low biodegradability
• High abrasion risk to equipment

Biological treatment is ineffective; chemical coagulation is the core solution.
inorganic industrial wastewater treatment

Why PAFC or Modified PAC Is Preferred

Standard PAC may underperform at extreme alkalinity.

Advantages of PAFC

• Better performance at pH 9–11
• Denser flocs
• Improved settling velocity
• Lower residual turbidity

Removal Mechanism Explained

1. pH neutralization: Al/Fe species partially neutralize alkalinity.
2. Fine particle capture: Glass particles are swept by metal hydroxides.
3. Dense sludge formation: Improves dewatering and transport.

Typical Treatment Train

1. Equalization tank
2. PAFC dosing
3. Rapid mixing
4. Sedimentation
5. Ultrafiltration / reuse

Effluent turbidity often reaches ≤5 NTU, protecting downstream membranes.

Dosage Reference

Item	Value
PAFC dosage	100–300 mg/L
SS removal	>90%
Turbidity	≤5 NTU

Buyer Selection Notes

• Iron–aluminum ratio stability
• Low corrosion impact
• Consistent batch quality

👉 内链锚文本建议：
PAC manufacturer for glass industry

Conclusion

PAC/PAFC is the most reliable chemical option for glass processing wastewater, ensuring stable ultrafiltration operation and water reuse.