What is White PAC? Applications and Effective Usage Guidelines

White PAC, or Poly Aluminium Chloride, is one of the most widely used water treatment chemicals today. With superior coagulation and sedimentation capabilities, white PAC not only helps remove impurities, bacteria, and organic matter but also ensures the treated water meets safety standards. So what exactly is white PAC, and why is it so crucial? Let's explore the details in the article below!

What is White PAC?

White PAC (White Poly Aluminium Chloride) is an inorganic aluminum-based polymer, recognized as one of the most effective coagulants available today. By removing suspended impurities, bacteria, and organic matter in water through coagulation and sedimentation, white PAC plays a vital role in clean water and wastewater treatment industries.

Key Advantages of White PAC

1. Superior efficiency:
   
   
   
   • White PAC can remove up to 99% of impurities and bacteria in water, ensuring the output meets stringent safety standards.
   
   
   
   






2. High safety:
   
   
   
   • Strictly controlled aluminum content ensures no harmful residues, making it particularly safe for drinking and domestic water.
   
   
   
   






3. Multi-industry applications:
   
   
   
   • Beyond domestic and wastewater treatment, white PAC is also used in industries like textiles, paper, and food processing, offering comprehensive value.
   
   
   
   

Origin and Production Process

White PAC is produced through the reaction between hydrochloric acid (HCl) and aluminum hydroxide (Al(OH)₃). This production process is tightly controlled to ensure the product has:

• High purity: Minimizes impurities, meeting safety standards for drinking water treatment.






• Stability: Maintains coagulation efficiency under varying operating conditions.

The advanced production process not only ensures quality but also optimizes usage costs for businesses.

Distinctive Features of White PAC

1. Less sludge generation:
   
   
   
   • Compared to other PAC types, white PAC produces less sludge, reducing treatment costs and environmental impact.
   
   
   
   






2. Effective across a wide pH range:
   
   
   
   • Operates optimally within a pH range of 5.0 to 9.0, making it suitable for various water sources, from groundwater to industrial wastewater.
   
   
   
   






3. Excellent solubility:
   
   
   
   • White PAC dissolves quickly in water, saving treatment time and minimizing waste.
   
   
   
   

Technical Specifications

• Main component: [Al₂(OH)nCl₆₋n]ₘ






• CAS: 1327-41-9​​






• Al₂O₃ concentration: Typically ranges from 10% to 31%​​

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• Color: White powder






• Solubility: Fully soluble in water






• pH: 3.5 - 5.0 in solution form​

Differences Between White PAC and Yellow PAC

White PAC and yellow PAC are both forms of Poly Aluminium Chloride, but they differ in composition, applications, and treatment efficiency. Below is a detailed comparison table:

Advantages of White PAC Over Yellow PAC

1. Higher purity:
   
   
   
   • White PAC contains fewer impurities, ensuring safety for drinking and domestic water, meeting international clean water treatment standards.
   
   
   
   






2. Less sludge generation:
   
   
   
   • White PAC produces less sludge after coagulation, reducing sludge treatment costs and environmental impact.
   
   
   
   






3. Higher treatment efficiency:
   
   
   
   • Works effectively across a wide pH range (5.0-9.0), suitable for various water sources with different alkalinity and acidity levels.
   
   
   
   






4. Eco-friendly:
   
   
   
   • White PAC leaves minimal residual or toxic substances, making it particularly safe for drinking water treatment.
   
   
   
   






5. Versatile applications:
   
   
   
   • Can be used for drinking water, domestic water, and industries requiring high cleanliness (pharmaceuticals, food processing).
   
   
   
   

Disadvantages of White PAC Compared to Yellow PAC

1. Higher cost:
   
   
   
   • White PAC is more expensive than yellow PAC due to its higher purity and production costs.
   
   
   
   






2. Less suitable for challenging industrial wastewater:
   
   
   
   • In some cases, industrial wastewater with high turbidity or complex compounds may require yellow PAC due to its stronger coagulation in harsh conditions.
   
   
   
   






3. Limited effectiveness for highly polluted water:
   
   
   
   • White PAC is typically preferred for less polluted water; for industrial wastewater with high oil/grease content, yellow PAC may be more suitable.
   
   
   
   

Choosing the Right PAC

• White PAC: Ideal for drinking water, domestic water, food, and pharmaceutical industries where high safety standards are required.






• Yellow PAC: More suitable for heavy industrial wastewater or cost-sensitive applications.

Depending on your purpose and budget, you can select the appropriate PAC type to optimize treatment efficiency and costs.

Classification of White PAC

White PAC is classified based on aluminum compound (Al₂O₃) content and specific applications. The two most common types on the market today are:

• PAC 10% (liquid form): Used for domestic water or drinking water treatment.






• PAC 31% (solid form): Commonly used in industrial and wastewater treatment.

Comparison table of white PAC types

Classification of White PAC

White PAC (White Poly Aluminium Chloride) is classified based on aluminum compound (Al₂O₃) content, physical state, and specific applications. White PAC can be categorized based on three main criteria.

• First, Al₂O₃ content, with white PAC 10% (10% ± 1%) typically used for domestic and drinking water treatment, suitable for clean water supply systems, and white PAC 31% (31% ± 1%) specialized for industrial wastewater treatment, textile dyeing, paper, and food processing industries.






• Second, physical state, white PAC comes in two common forms: powder (white or light yellow), typically used in clean water treatment industries, and liquid (lower Al₂O₃ concentration), suitable for applications requiring quick handling like domestic water treatment.






• Third, technical specifications, with high-purity white PAC containing fewer impurities, generating less sludge, meeting international standards, and suitable for drinking water treatment; while standard white PAC is more cost-effective but contains more impurities, primarily used for industrial wastewater treatment.

Applications of Each White PAC Type

1. White PAC 10% (Liquid Form):
   
   
   
   • Applications: Domestic water, drinking water.
   
   

   
   

   • Advantages: Safe, easy to dissolve, convenient handling.
   
   
   
   






2. White PAC 31% (Powder Form):
   
   
   
   • Applications: Industrial wastewater, food processing wastewater.
   
   

   
   

   • Advantages: Strong coagulation efficiency, suitable for high-turbidity water.
   
   
   
   






3. High-Purity White PAC:
   
   
   
   • Applications: Food, pharmaceutical industries, or water treatment requiring high standards.
   
   

   
   

   • Advantages: No secondary pollution, meets international standards.
   
   
   
   

Comparison Table of White PAC Types

The choice of white PAC depends on water treatment needs, budget, and safety standards. For domestic water, high-purity white PAC or PAC 10% is optimal. For industrial wastewater, white PAC 31% is more suitable due to its strong coagulation efficiency.

Applications of White PAC

Thanks to its effective coagulation and water treatment capabilities, versatility, and safety, white PAC has become an ideal solution for industries requiring water treatment and product quality improvement. Key applications of white PAC include:

• Drinking water and feedwater treatment:
  
  
  
  
  • White PAC helps remove suspended impurities, bacteria, and organic matter in water, ensuring safety standards. It is the top choice for domestic water systems and drinking water plants.
  
  
  
  






• Wastewater treatment:
  
  
  
  
  • In industries, white PAC is used to reduce COD, BOD, and organic matter in wastewater. Textile dyeing, food processing, and paper industries use white PAC to treat wastewater, helping it meet environmental standards while reducing sludge generation.
  
  
  
  






• Paper and textile industries:
  
  
  
  
  • White PAC acts as a product quality enhancer, making paper brighter and fabrics more colorfast and uniform. This improves product value and performance in both industries.
  
  
  
  






• Aquaculture:
  
  
  
  
  • Used to treat water in shrimp and fish ponds, white PAC removes pollutants, improving the aquatic environment and increasing productivity and product quality.
  
  
  
  






• Swimming pool and reservoir treatment:
  
  
  
  
  • White PAC helps keep swimming pools and reservoirs clean and safe for human use.
  
  
  
  

Usage Guidelines for White PAC

Dilution: Dilute PAC into a 5-10% solution with clean water, stirring thoroughly for complete dissolution. This ensures the chemical works at maximum efficiency when mixed into water.

Dosage:

• Clean water, drinking water: Use 20-50 mg PAC/m³ water.






• Wastewater: Increase dosage to 50-100 mg PAC/m³ water.

Mixing process: Mix the PAC solution into water for 15-30 minutes, ensuring even chemical distribution. Monitor the coagulation process to adjust dosage as needed.

Usage precautions

• Avoid direct contact with skin and eyes; use full protective gear.






• Do not over-dilute or overdose, as this may cause PAC residue and reduce treated water quality.






• Store PAC in a dry place, away from moisture and direct sunlight.

Risk Analysis When Using White PAC

• Risk of PAC Overdosing
  
  
  
  • Excess white PAC in water treatment can lead to the following issues:
    
    
    
    • Increased residual aluminum in water: Aluminum levels exceeding permissible limits may affect human health in drinking water.
    
    

    
    

    • Reduced treated water quality: Excess PAC creates unwanted sludge, increasing sludge treatment costs and potentially polluting water sources if uncontrolled.
    
    

    
    

    • Impaired coagulation efficiency: Excess chemicals may disrupt the coagulation process, preventing water from meeting desired treatment standards.
    
    
    
    
  
  
  
  






• Causes of PAC Overdosing
  
  
  
  • Inaccurate dosage measurement: Using more PAC than necessary for the water source characteristics.
  
  

  
  

  • Uncontrolled water pH: If pH is outside the optimal range (5.0 - 9.0), coagulation efficiency decreases, leading to PAC overuse.
  
  

  
  

  • Uneven mixing: PAC is not evenly distributed in water, causing accumulation at certain points.
  
  
  
  






• Solutions and Safety Measures
  
  
  
  • Accurate dosage measurement:
    
    
    
    • Check input water parameters (pH, turbidity, organic content) before using PAC.
    
    

    
    

    • Use 20-50 mg PAC/m³ water for clean water and 50-100 mg PAC/m³ water for wastewater. Adjust dosage based on turbidity and pollution levels.
    
    
    
    
  
  

  
  

  • pH control:
    
    
    
    • Ensure input water pH is within 5.0 - 9.0 for optimal PAC performance.
    
    

    
    

    • Use pH-adjusting chemicals (e.g., acid or alkali) if needed before adding PAC.
    
    
    
    
  
  

  
  

  • Proper dilution and mixing:
    
    
    
    • Dilute PAC into a 5-10% solution before use to ensure even distribution in water.
    
    

    
    

    • Mix the PAC solution continuously for 15-30 minutes to optimize coagulation.
    
    
    
    
  
  

  
  

  • Monitor treated water quality:
    
    
    
    • Use testing equipment to check residual aluminum and turbidity, ensuring treated water meets safety standards.
    
    
    
    
  
  
  
  

4. Practical Safety Guidelines

• Operator training: Ensure personnel understand PAC dosage and usage.






• Regular monitoring plan: Check critical water parameters before and after treatment.






• Use protective gear: Avoid direct contact with PAC for operator safety.






• Sludge management: Handle sludge properly to minimize environmental impact.

Storage Guidelines

• Storage location: Dry, cool, away from direct sunlight.






• Packaging: Store in sealed bags to prevent moisture absorption.






• Shelf life: Use within 12 months for optimal effectiveness.

Purchase Reliable White PAC Chemicals at Loc Thien

Loc Thien proudly offers a diverse range of white PAC from renowned manufacturers worldwide, ensuring superior quality to meet customers' water treatment and industrial needs. Current white PAC products available at Loc Thien:

• Viet Tri PAC
  
  
  
  • Viet Tri white PAC is a high-quality domestic product, manufactured in Vietnam to strict standards, effectively meeting domestic wastewater, drinking water, and industrial treatment needs. It's an ideal choice for customers seeking cost optimization without compromising treatment efficiency.
  
  

  
  

  • Key features: Competitive pricing, suitable for domestic and local wastewater treatment.
  
  
  
  






• Indian PAC Chemicals
  
  
  
  • Indian white PAC is a premium imported product, delivering superior treatment efficiency even in challenging water conditions. Particularly suitable for drinking water and domestic water systems due to its optimal removal of suspended solids and heavy metals.
  
  

  
  

  • Main advantages: High stability, safe for drinking and domestic water treatment
  
  
  
  

White PAC is not only an effective water treatment chemical but also a sustainable solution for improving water quality and protecting the environment. With diverse applications in clean water, wastewater treatment, and various industries, white PAC has proven its crucial role. Choosing white PAC means investing in safety and sustainable development. White PAC is not just a chemical but a practical solution for efficient and safe water treatment.

With its superior ability to remove impurities, bacteria, and organic matter, white PAC provides clean water, contributing to health and environmental protection. For industries, it not only optimizes production processes but also reduces costs and environmental impact. Choosing white PAC represents a modern approach to solving water treatment challenges sustainably and effectively.

Loc Thien Chemicals Co., Ltd. proudly provides high-quality White PAC, meeting all purchasing needs with competitive pricing and professional services. We commit to stable supply, dedicated technical support, and flexible return policies, accompanying your business's sustainable development.

• 📞 Hotline: 0979 891 929






• 📩 Email: [email protected]






• 🌐 Website: hoachatlocthien.com