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Comparing Two Common Water Treatment Coagulants In water treatment processes, selecting the right coagulant is essential for improving clarification efficiency, reducing turbidity, and achieving stable treatment performance. Aluminium sulphate and Poly Aluminium Chloride (PAC) are two widely used inorganic coagulants in water purification and wastewater treatment. Although both products are designed to help remove suspended particles, they have differences in chemical characteristics, application conditions, cost, and treatment performance. Understanding these differences helps water treatment companies, engineers, and purchasing managers choose the most suitable solution. Shandong Jiada New Material Co., Ltd. is a professional aluminium sulphate manufacturer in China, supplying reliable aluminium sulphate products for global water treatment industries.

What Is Aluminium Sulphate? Aluminium sulphate is a traditional inorganic coagulant widely used in: Drinking water treatment Industrial wastewater treatment Paper manufacturing Environmental protection projects When added into water, aluminium sulphate reacts to form aluminium hydroxide flocs. These flocs capture suspended particles and improve water clarification.

What Is PAC (Poly Aluminium Chloride)? Poly Aluminium Chloride is another aluminium-based coagulant commonly used in water treatment. Compared with traditional aluminium sulphate, PAC generally contains pre-polymerized aluminium compounds. It is often selected for applications requiring: Faster coagulation Lower dosage requirements Better performance under certain water conditions

Key Differences Between Aluminium Sulphate and PAC 1. Chemical Characteristics Aluminium Sulphate Traditional aluminium salt coagulant Requires hydrolysis reaction during treatment Widely used with long application history PAC Pre-polymerized aluminium coagulant Contains polymeric aluminium species Designed for improved coagulation efficiency in some applications

1. Treatment Performance Aluminium Sulphate Advantages Proven technology Reliable clarification performance Suitable for many conventional treatment systems Cost-effective option PAC Advantages Often works efficiently at lower dosage Can perform well in some low-temperature water conditions May produce less sludge in certain applications

2. Cost Considerations Cost is an important factor for many water treatment projects. Aluminium sulphate is often preferred because of: Competitive price Stable supply Wide availability PAC may provide advantages where higher treatment efficiency is required. The best choice depends on: Water quality Treatment goals Operating budget

3. Application Selection Aluminium Sulphate Commonly Used For: Municipal water treatment Industrial wastewater Paper industry Large-scale water projects PAC Commonly Used For: Advanced water purification Specific industrial applications Projects requiring higher coagulation efficiency

How to Choose Between Aluminium Sulphate and PAC? Customers should consider: Raw Water Quality Different water sources require different treatment solutions. Treatment Process Existing equipment and process design affect chemical selection. Operating Cost Chemical price and dosage should both be considered. Technical Testing Laboratory testing can help determine the best product.

Why Many Customers Still Choose Aluminium Sulphate Despite the development of new coagulants, aluminium sulphate remains popular because of: ✅ Long application history ✅ Reliable performance ✅ Competitive cost ✅ Easy availability ✅ Wide industry acceptance For many water treatment facilities, aluminium sulphate continues to be a practical and economical solution.

Shandong Jiada Aluminium Sulphate Supply Shandong Jiada New Material Co., Ltd. provides aluminium sulphate products for: Water treatment companies Industrial users Environmental projects International distributors The company offers: Stable production capacity Quality-controlled products Export packaging Professional customer support

Conclusion Both aluminium sulphate and PAC are effective water treatment coagulants. The better choice depends on: Water conditions Application requirements Treatment process Cost considerations For customers seeking a reliable and economical coagulant solution, aluminium sulphate remains an important choice. Shandong Jiada provides professional aluminium sulphate manufacturing and global supply services.