The textile industry is a significant contributor to industrial wastewater, often characterized by intense coloration and high organic load, measured as Chemical Oxygen Demand (COD). For research scientists and facility managers within this sector, finding an effective and economical solution to treat these complex effluents is a constant challenge. Industrial Grade Polyaluminium Chloride (PAC) has emerged as a leading chemical coagulant capable of addressing these specific issues, making it a vital component in modern textile wastewater treatment plants.

The Challenge of Textile Wastewater
Textile dyeing and finishing processes utilize a vast array of dyes, pigments, and auxiliary chemicals. When these substances are discharged, they contribute to wastewater that is not only aesthetically unappealing due to color but also environmentally harmful, with high COD levels indicating significant organic pollution. Traditional treatment methods can be costly and less efficient in removing these recalcitrant pollutants. This is where the specific properties of Polyaluminium Chloride, particularly industrial-grade PAC, become invaluable.

How PAC Works in Textile Effluent Treatment
Polyaluminium Chloride (CAS 1327-41-9) functions as a powerful inorganic polymer coagulant. In textile wastewater, its primary roles include:

  • Color Removal: PAC effectively destabilizes and aggregates the dye molecules, causing them to form flocs that can be settled out. This significantly reduces the visible color of the effluent, a critical step for regulatory compliance and environmental discharge standards.
  • COD Reduction: By coagulating and precipitating organic matter, including residual chemicals and suspended solids, PAC helps to lower the COD levels in the wastewater. This reduction is essential for meeting discharge permits and protecting receiving water bodies.
  • Suspended Solids Removal: Textile wastewater often contains fine suspended particles that PAC can efficiently capture, leading to clearer water.

Benefits for Textile Manufacturers
Procurement managers in the textile sector often seek solutions that offer a balance of performance, cost, and ease of use. Industrial-grade PAC provides these advantages:

  • High Efficiency: PAC is known for its rapid flocculation and sedimentation, allowing for efficient treatment processes even with challenging textile effluents.
  • Cost-Effectiveness: The relatively low dosage required for effective treatment means that the cost per volume of treated water is competitive. When considering PAC price, its efficiency often translates to overall savings.
  • Wide pH Applicability: PAC works effectively across a broad pH range, which is beneficial given the variable pH of wastewater from different dyeing processes.
  • Supplier Reliability: Sourcing from experienced manufacturers in China ensures a consistent supply of quality PAC, crucial for maintaining uninterrupted operations.

Making an Informed Purchase Decision
For textile mills looking to buy PAC, it is important to partner with suppliers who can guarantee consistent product quality and offer technical support. When evaluating suppliers, consider their ability to provide detailed specifications, including Al2O3 content, basicity, and low water insolubles. Understanding the manufacturing process (e.g., spray-drying for powder PAC) can also indicate product quality and consistency.

In conclusion, the use of industrial-grade Polyaluminium Chloride is a highly effective strategy for textile manufacturers aiming to improve their wastewater treatment. Its ability to tackle color removal and COD reduction efficiently and economically makes it an essential chemical for achieving environmental compliance and sustainable operations. By sourcing from reliable PAC suppliers, textile businesses can ensure the quality and consistency needed for optimal performance.