Application differences and selection suggestions of polyaluminum chloride (PAC) with different content
Release time: 2026-03-16
Polyaluminium Chloride (PAC), a widely used inorganic polymer flocculant, is extensively applied in water purification, municipal wastewater treatment, and industrial wastewater management. It is categorized into various specifications based on the aluminum oxide (Al₂O₃) content. Different PAC formulations exhibit variations in treatment efficacy, applicable water quality, and operational costs, requiring careful selection according to specific water treatment conditions.
1. Low-concentration polyaluminum chloride (approximately 20%–24%)
Low-concentration polyaluminum chloride is generally an industrial-grade product with relatively low production costs, and it is widely used in industrial water treatment where the requirements for treatment are not particularly stringent.
Main application scenarios:
Treatment of coal washing wastewater in coal mine
Treatment of construction slurry water
general industrial circulating water treatment
Treatment of mine wastewater
This product demonstrates certain advantages in treating high-turbidity water, effectively removing suspended particles from the water. However, due to its low content of active ingredients, its efficacy is relatively limited in certain precision water treatment scenarios.
II. Medium-content polyaluminum chloride (approximately 26%–28%)
Aluminum chloride with 26%-28% content is one of the most commonly used specifications in the market, offering excellent cost-effectiveness for municipal sewage treatment and certain industrial wastewater processing.
Main application scenarios:
municipal sewage treatment plant
Treatment of printing and dyeing wastewater
Papery wastewater treatment
Waste water treatment of food processing
The product has a good balance between flocculation effect, dosage and cost, so it is common in practical engineering application.
III. High-concentration polyaluminum chloride (approximately 28%–30% or higher)
High-concentration polyaluminum chloride is commonly used in water treatment scenarios requiring high water quality standards, such as water treatment plants or certain fine industrial water treatment applications.
Main application scenarios:
purification of raw water in waterworks
high standard water treatment for industrial use
Fine Chemical Wastewater Treatment
treatment of high turbidity surface water
High-concentration PAC exhibits rapid flocculation, large floc formation, and excellent settling performance, achieving superior treatment results with lower dosages. This makes it particularly advantageous in scenarios requiring high water quality standards.
IV. How to Select PAC Products with Appropriate Content
In practical water treatment projects, the selection of polyaluminum chloride products typically requires comprehensive consideration of the following factors:
Raw water quality
The turbidity, organic matter content and pH value were measured.
Processing target requirements
Different treatment standards have different requirements for the performance of the drug.
runing cost control
The purchase cost of products with different contents is different from the dosage.
manufacturer product stability
Stable production process and quality control system can ensure the long-term use of the product.
Therefore, in the process of purchasing, it is an important step to ensure the treatment effect to choose the polyaluminum chloride manufacturer with stable production capacity and to carry out small test or field debugging according to the actual water quality conditions.
Polyaluminum chloride (PAC) with varying concentrations serves distinct purposes in water treatment. Proper selection of PAC products not only enhances treatment efficiency but also effectively controls operational costs. With advancements in water treatment technologies, PAC products are continuously being optimized, leading to a broader range of applications.
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