Classification of Polyaluminum Chloride Production Processes and Their Applications

Polyaluminum Chloride Production Process: Types and Applications

Introduction

Polyaluminum Chloride production process plays a crucial role in determining the quality, performance, and applications of PAC (Polyaluminum Chloride) in water treatment. PAC is widely used for municipal wastewater, industrial effluent, and drinking water treatment due to its strong adsorption capacity, fast flocculation, and high efficiency.

Understanding the Polyaluminum Chloride production process helps engineers, buyers, and water treatment professionals select the most suitable PAC for their specific requirements.

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Types of Polyaluminum Chloride Production Process

PAC is mainly produced using three production methods:

1. Drum-Drying Type PAC
2. Plate-and-Frame Type PAC
3. Spray-Drying Type PAC

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1. Drum-Drying Type PAC

Drum-drying PAC is the most cost-effective PAC suitable for ordinary sewage treatment.

Characteristics:

• Appearance: Brown or coffee-colored
• Aluminum content: Moderate
• Insoluble matter: Relatively high

Production Overview:
Liquid PAC enters a rotating drum dryer where heat (hot air, steam, or flue gas) evaporates the water. Internal paddles lift and sprinkle the PAC solution to improve drying efficiency.

Applications:

• Municipal wastewater treatment
• Industrial wastewater treatment
• Situations where cost reduction is critical

Advantages:

• Low production cost
• Simple manufacturing process

Limitations:

• Higher insoluble residue
• Not suitable for drinking water

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2. Plate-and-Frame Type PAC

Plate-and-frame PAC offers a balance between purity, efficiency, and cost, making it suitable for both wastewater and drinking water treatment.

Characteristics:

• Appearance: Pale yellow
• Aluminum content: High
• Insoluble matter: Low
• Solubility: Excellent

Production Overview:
PAC solution passes through plate-and-frame filter presses to remove impurities, then is dried. The result is a light yellow, transparent liquid that improves pipeline flow and dosing efficiency.

Applications:

• Municipal and industrial wastewater
• Drinking water purification
• Compact water treatment equipment

Advantages:

• Low equipment corrosion
• Efficient water purification
• Cost-effective for high-volume systems

External resource:

• American Water Works Association: Coagulants and Flocculants

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3. Spray-Drying Type PAC

Spray-drying PAC is a high-end PAC type, ideal for drinking water and high-standard water treatment.

Characteristics:

• Appearance: White or light yellow
• Aluminum content: Very high
• Insoluble matter: Extremely low
• Dissolves rapidly

Production Overview:
A concentrated PAC solution (40–50%) is atomized into fine droplets in a spray tower and rapidly dried. This method produces uniform particles with excellent flowability and low dust.

Applications:

• Drinking water treatment
• Industrial water requiring low iron content
• Paper manufacturing

Advantages:

• Highest purity and performance
• Lower dosage requirements (saves cost)
• Reduces labor intensity and improves safety

External resource:

• ScienceDirect: Polyaluminum Chloride Applications

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Comparison of PAC Production Methods

Ranking (Performance):
Spray-Drying > Plate-and-Frame > Drum-Drying

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Conclusion

The Polyaluminum Chloride production process directly impacts PAC quality, purity, and application scope.

• Drum-drying PAC is the most economical choice for ordinary sewage and industrial wastewater treatment.
• Plate-and-frame PAC offers a strong balance of purity, efficiency, and cost, making it suitable for both sewage and drinking water treatment.
• Spray-drying PAC, while more expensive, delivers superior performance and safety for drinking water and high-standard water treatment applications.

By understanding these differences, users can make informed decisions and select the most appropriate PAC product to optimize both treatment efficiency and operating costs.

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• Contact Us
• We hope this article has helped you better understand the production processes and applications of Polyaluminum Chloride (PAC).
• Whether you are an existing customer or simply exploring PAC solutions, please feel free to contact us if you have any questions regarding:
• PAC manufacturing processes
• Quality control standards
• Product selection for specific water treatment needs
• Our technical team is always ready to provide professional support and detailed information.
  Thank you for your interest in Watercarechem and our water treatment solutions.

Last Updated on 2026-02-04 by system