Polyaluminium Chloride (PAC) is one of the most widely used inorganic coagulants in water treatment, known for its high efficiency, low dosage, and excellent performance across a wide range of water conditions. It is commonly applied in drinking water purification, municipal wastewater treatment, and industrial effluent treatment.
Why PAC Is Highly Effective in Water Treatment
Compared with traditional coagulants such as alum, PAC offers faster flocculation, stronger adsorption capacity, and better stability. It can quickly destabilize suspended particles and form dense flocs, allowing rapid sedimentation and improved filtration performance.
In addition, PAC has a wide pH application range and lower corrosivity, making it easier to handle and suitable for various treatment systems.
Superior Performance in Low Temperature and Low Turbidity Water
One of the key advantages of high-quality PAC is its strong performance in low-temperature and low-turbidity water conditions, which are typically difficult for conventional coagulants.
Studies show that PAC is less sensitive to temperature changes and can maintain effective coagulation even in cold environments, where other coagulants often fail.
Because PAC is a pre-hydrolyzed polymer, it can form larger and denser flocs more quickly, ensuring stable treatment efficiency in winter conditions or groundwater systems.
Lower Cost and Reduced Sludge Generation
PAC not only improves water quality but also helps reduce operational costs. Compared with traditional chemicals:
Lower dosage is required
Less sludge is produced
Faster settling reduces processing time
This makes PAC an ideal choice for both municipal and industrial water treatment plants, especially those aiming to improve efficiency while controlling costs.
Wide Range of Applications
PAC is widely used across multiple industries, including:
Drinking water treatment
Municipal sewage treatment
Textile and dyeing wastewater
Paper and pulp industry
Mining and metallurgy wastewater
Oilfield and petrochemical wastewater
Its versatility and consistent performance make it one of the most reliable water treatment chemicals globally.
How to Choose High-Quality PAC
When selecting PAC, international buyers typically focus on:
Al₂O₃ content
Basicity level
Solubility and purity
Low impurity content
High-purity PAC products ensure stable performance, lower residual aluminum, and better treatment results.
