The Application of Polyacrylamide in the Treatment of Paper Mill Wastewater

In the field of water treatment, polyacrylamide (PAM), as a polymeric compound, holds a significant position and plays a crucial role in the treatment of paper mill wastewater. The paper manufacturing process generates substantial volumes of wastewater, for which polyacrylamide serves as an effective treatment agent. Possessing outstanding flocculation and sedimentation properties, it efficiently removes suspended particles, organic matter and other contaminants from wastewater, significantly enhancing treatment efficacy. As a flocculant, polyacrylamide enables minute suspended particles in papermaking wastewater—which are difficult to settle or filter directly—to rapidly aggregate into larger particles. This creates favourable conditions for subsequent sedimentation and filtration operations, significantly enhancing solid-liquid separation efficiency. Concurrently, it effectively removes suspended oils and colloidal substances, reducing wastewater turbidity and facilitating wastewater treatment and recycling. Moreover, polyacrylamide possesses unique adsorption properties. Organic matter and other pollutants generated during waste pulp and papermaking processes can be tightly bound to polyacrylamide through adsorption. These organic compounds, characterised by high solubility and strong stability, are difficult to remove directly. Polyacrylamide, however, can adsorb them onto its own molecular chains, forming complexes that enable highly efficient removal of the organic matter. Polyacrylamide also plays a significant role in improving the rheological properties of wastewater. Paper mill effluent typically exhibits high viscosity and surface tension, presenting considerable challenges for subsequent treatment and mass transfer. The addition of polyacrylamide optimises the fluidity and wettability of the wastewater, reducing viscosity and surface tension, thereby enhancing treatment efficacy. In summary, polyacrylamide plays a crucial role in the treatment of papermaking wastewater, achieving purification and water quality improvement through multiple mechanisms including flocculation, sedimentation, and adsorption. However, when employing polyacrylamide, strict control over dosage is essential to prevent secondary pollution caused by excessive addition. Concurrently, proactive exploration of polyacrylamide recovery and reuse methodologies is essential to mitigate its potential environmental impact, thereby better serving environmental conservation efforts. The main products of flocculant manufacturer Xinhuan Water Treatment are: White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polymerized iron and aluminium chloride, and other water treatment chemicals. Welcome customers to write to us to negotiate business! Tel/WhatsApp：86 19139972558 Email：Sunny@xhwtm.com Contact:Sunny