Application of PRAESTOL LT27 Anionic Polyacrylamide

PRAESTOL LT27 anionic polyacrylamide is a high-performance flocculant widely applied in solid–liquid separation processes across water treatment, mining, mineral processing, and heavy industrial operations. As an anionic polyacrylamide with optimized molecular weight and charge density, PRAESTOL LT27 anionic polyacrylamide is specifically designed to promote efficient particle aggregation, rapid settling, and improved clarification in systems containing fine suspended solids.

1. Municipal and Industrial Wastewater Treatment

One of the most important applications of PRAESTOL LT27 anionic polyacrylamide is in municipal and industrial wastewater treatment plants. In primary and secondary clarification processes, PRAESTOL LT27 anionic polyacrylamide is typically dosed after inorganic coagulants such as ferric chloride, aluminum sulfate, or polyaluminum chloride. Once particles are destabilized by the coagulant, PRAESTOL LT27 anionic polyacrylamide acts as a bridging agent, forming large, dense flocs that settle quickly.

In municipal wastewater treatment, PRAESTOL LT27 anionic polyacrylamide improves suspended solids removal, lowers effluent turbidity, and enhances overall clarification efficiency. In industrial wastewater systems—such as chemical plants, steel mills, food and beverage factories, and textile operations—PRAESTOL LT27 anionic polyacrylamide effectively removes fine colloids and organic solids that are difficult to separate by gravity alone. Its consistent performance allows stable operation even under fluctuating flow rates and solids concentrations.

2. Sludge Thickening and Dewatering

PRAESTOL LT27 anionic polyacrylamide is extensively used in sludge thickening and mechanical dewatering processes. It is suitable for gravity thickeners, belt filter presses, centrifuges, screw presses, and chamber filter presses. When applied to sludge, PRAESTOL LT27 anionic polyacrylamide promotes the formation of strong, shear-resistant flocs that release water efficiently during mechanical separation.

In activated sludge, primary sludge, and mixed sludge applications, PRAESTOL LT27 anionic polyacrylamide increases cake solids content while reducing filtrate turbidity. This leads to lower sludge volumes, reduced transportation and disposal costs, and improved overall treatment efficiency. The strong floc structure generated by PRAESTOL LT27 anionic polyacrylamide also helps operators reduce polymer dosage and maintain stable dewatering performance.

3. Mining and Mineral Processing

In mining and mineral processing industries, PRAESTOL LT27 anionic polyacrylamide plays a critical role in tailings thickening, slurry clarification, and process water recovery. Fine mineral particles such as silica, clay, and metal oxides often carry negative surface charges and remain suspended for long periods. PRAESTOL LT27 anionic polyacrylamide effectively aggregates these particles through polymer bridging, resulting in rapid settling and improved compaction.

In tailings thickeners, PRAESTOL LT27 anionic polyacrylamide improves underflow density and produces clear overflow water suitable for reuse in the processing circuit. This reduces freshwater consumption and supports sustainable mining practices. PRAESTOL LT27 anionic polyacrylamide is also widely used in high-density and paste thickening applications, where strong and stable flocs are essential for consistent underflow discharge and safe tailings disposal.

4. Alumina Refining and Red Mud Treatment

A key industrial application of PRAESTOL LT27 anionic polyacrylamide is in alumina refining, particularly within the Bayer process. During bauxite digestion and clarification, fine red mud particles must be separated efficiently from sodium aluminate liquor. PRAESTOL LT27 anionic polyacrylamide enhances red mud flocculation, leading to faster settling rates and improved underflow solids concentration.

The use of PRAESTOL LT27 anionic polyacrylamide results in clearer overflow liquor, improved washing efficiency, and reduced caustic soda losses. In high-solids red mud thickeners, PRAESTOL LT27 anionic polyacrylamide contributes to better rheology control and more stable residue handling, supporting efficient disposal or dry stacking operations.

5. Sand Washing and Aggregate Processing

PRAESTOL LT27 anionic polyacrylamide is widely applied in sand washing plants and aggregate processing facilities. In these systems, fine silt and clay particles must be removed from process water generated during washing and classification. PRAESTOL LT27 anionic polyacrylamide promotes rapid flocculation of fines, allowing them to settle quickly in clarifiers or settling tanks.

This application of PRAESTOL LT27 anionic polyacrylamide improves water recycling efficiency, reduces the need for large settling ponds, and minimizes environmental discharge. At the same time, it improves the quality of washed sand and aggregates by reducing residual fines.

6. Paper and Pulp Industry

In the paper and pulp industry, PRAESTOL LT27 anionic polyacrylamide is used primarily for white water clarification and fiber recovery. Fine fibers, fillers, and pigments suspended in white water can be efficiently flocculated using PRAESTOL LT27 anionic polyacrylamide. This enables mills to recover valuable raw materials and reduce wastewater load.

When used in combination with cationic coagulants or retention aids, PRAESTOL LT27 anionic polyacrylamide improves drainage, reduces suspended solids in effluent, and supports closed-loop water reuse systems, helping mills meet environmental compliance requirements.

Conclusion

In conclusion, PRAESTOL LT27 anionic polyacrylamide is a versatile and highly efficient flocculant used across wastewater treatment, sludge dewatering, mining, alumina refining, sand washing, and paper production. Its strong particle-bridging capability, low dosage requirement, and adaptability to different water chemistries make PRAESTOL LT27 anionic polyacrylamide a reliable solution for demanding industrial solid–liquid separation applications.