The paper industry is a significant consumer of water, making efficient water management and effective wastewater treatment crucial for both operational success and environmental responsibility. Polyaluminium Chloride (PAC) has become an indispensable chemical in this sector, serving multiple functions that enhance water quality and improve the production of paper products. As a versatile inorganic polymer flocculant, PAC not only addresses wastewater challenges but also contributes to the quality and efficiency of the papermaking process itself.

One of the primary uses of PAC in the paper industry is in the treatment of process water and wastewater. Papermaking generates large volumes of effluent containing fibers, fillers, dyes, and other chemical residues. PAC acts as a powerful coagulant, aggregating these suspended solids and colloidal materials to facilitate their removal through sedimentation and filtration. This ensures that discharged water meets environmental standards and allows for potential water recycling within the mill, reducing overall water consumption. The efficiency of PAC in flocculation is key to maintaining clean water circuits and minimizing the environmental impact of paper production.

Beyond its role in wastewater treatment, Polyaluminium Chloride is also employed as a functional additive within the papermaking process itself. It serves as a sizing agent, helping to control the paper's absorption of liquids like ink. By neutralizing anionic substances and promoting the retention of sizing agents on the paper fibers, PAC contributes to improved printability and water resistance in the final product. Furthermore, PAC can act as a retention aid and drainage enhancer, helping to retain fine particles and fillers within the paper sheet, thereby improving paper quality and reducing material loss. Its dual function makes it a valuable asset for paper manufacturers.

The benefits of using PAC in the paper industry are manifold. It offers efficient contaminant removal for wastewater, reduces the need for other chemicals, and improves the quality characteristics of the paper. As a high-efficiency inorganic polymer flocculant, it provides a cost-effective and environmentally sound solution for complex water management needs. For paper manufacturers seeking to optimize their processes and meet stringent environmental regulations, incorporating PAC into their operations is a strategic advantage, ensuring both product excellence and sustainable resource utilization.