ConradPolyaluminium Chloride (PAC) is used as a coagulant for industrial wastewater treatment. It is because of its effectiveness and reasonable pricing. Likun Materials provides sales pac 28 for efficient and economical wastewater treatment. 28% and 30% PAC are the most commonly used grades of PAC. These two grades are similar in use and chemically very close to one another. However, small differences in composition and differences in functional performance make one more appropriate than the other for a specific industrial application. These small differences are important for treatment professionals and plant operators to narrow down formulations and achieve desired results related to efficiency, cost, and sustainability over time.
Chemical Composition and Basic Properties
The most significant difference between is the amount of aluminum oxide each contains. In 28% PAC, there is approximately 28% Al₂O₃, and in 30% PAC, 30% Al₂O₃. This small difference, 2% difference in Al₂O₃ weight, reflects on the charge density and coagulation strength of the chemical. Both grades are likely to have a basicity of 50%-85%, which reflects their capacity to neutralize negatively charged particles within water.
The PAC 30% makes stronger and quicker reactions because of the slightly higher concentration of aluminum. PAC 28% gives a middle-ground option since it achieves a good balance between performance on coagulation and cost. Both options come in powder or liquid forms and can be identified by their slightly yellow color, which indicates purity and stability.
Managing Costs and Assessing Economics
Cost-performance ratios are greater for PAC 28% than for PAC 30%; the former is also cheaper for purchase and operational use. For large-scale wastewater systems, even small price differences can lead to large savings over the long haul, which is what the difference means in terms of savings in the wastewater systems industry.
For many industrial applications, the marginal performance gain is outweighed by costs, even where PAC 30% is constructed. For low-budget plants that want to preserve a mode of efficient operation, PAC 28% is a popular choice. Its stable performance also means that generating and handling sludge costs are low. This helps to increase cost efficiency.
Use of Different Applications in Different Industries
Across sectors, PAC 28% is the most widely used in the textile industry, mining, chemicals, and wastewater treatment plants. For environments with highly turbid, colored, and organically polluted waters, it gives outstanding performance. Its stable formulation is also compatible with tropical areas and is operational in environments where the pH varies.
People often use PAC 30% in cases where water reuse in production processes is essential, even in closed-loop systems. This is primarily the 30% concentration preferred in the production of paper and pulp, food processing, and electronics, where exceptional clarity and severe filtration are required. These are the scenarios where the increased coagulation capabilities of PAC 30% outweigh the associated costs.
Sludge Characteristics and Environmental Impact
The smaller volumes of sludge produced by both PAC 28% and PAC 30% in comparison to older coagulants, such as aluminum sulfate, are a clear advantage. With PAC 28%, sludge management becomes easier because of more compact and denser floc formation during coagulation. The difference in aluminum content in the two products is slight, but in PAC 30% it is higher, which means more sludge will be produced, although the effluent will be clearer.
Environmental sludge and overall impact produced by both products are well below modern environmental and sustainability standards. The coagulation of aluminum sulfate used in producing PAC is militaristic and of world-leading standards, which allows PAC to be used as the only source of aluminum sulfate produced during water treatment in some locations. This enables the treatment to be compliant with international and country-specific standards and regulations.
Customization and Supply Considerations
Likun Materials has been in the business of water treatment chemicals long enough to understand the importance of reliable customization and supply. With OEM options for local market needs and flexible supply in 25 kg or jumbo bags, clients receive a long-term stable supply, allowing continuous operation and process adjustment to the supplied PAC grade for the clients’ operational requirements.
Conclusion
The difference between PAC 28% and PAC 30% boils down to concentration, application focus, and the resulting performance. For high-purity water treatment, PAC 30% is preferred due to its higher coagulating power; however, PAC 28% is more economically favorable and therefore preferred in large-scale productions. In the long run, specific goals, water conditions, and budget dictate the choice for treatment. For most, PAC 28% is the most economically favorable option and allows for dependable and efficient management of wastewater.