Nalco 71300 is a cationic polyacrylamide flocculant with core–shell polymer technology, widely used in water treatment and sludge dewatering processes. The core–shell structure improves polymer dissolution speed, floc strength, and shear resistance, making it particularly suitable for demanding separation processes in municipal and industrial wastewater treatment. The following sections explain the main applications of core shell 71300.

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1. Municipal Wastewater Treatment

One of the most important applications of core shell 71300 is in municipal wastewater treatment plants. Domestic sewage contains suspended solids, microorganisms, organic matter, and colloidal particles that carry negative electrical charges. These particles remain dispersed in water and cannot easily settle.

When core shell 71300 is added to the wastewater treatment system, the positively charged polymer chains neutralize the negative charges of suspended particles. At the same time, the long molecular chains of the polymer create bridging between particles, forming larger and denser flocs. These flocs settle rapidly in sedimentation tanks or clarifiers, improving solid–liquid separation.

The use of core shell 71300 helps wastewater treatment plants achieve:

• Faster settling of suspended solids

• Reduced turbidity in treated water

• Improved removal of organic matter

• Higher efficiency in clarification processes

Because of these benefits, core shell 71300 is often used in secondary clarification and tertiary treatment stages of municipal wastewater systems.

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2. Sludge Dewatering

Another major application of core shell 71300 is sludge conditioning and dewatering. Wastewater treatment processes generate large amounts of biological sludge that contains high water content. This sludge must be dewatered before disposal or further treatment.

Core shell 71300 acts as a high-efficiency sludge flocculant. The cationic polymer neutralizes the negative charges on sludge particles and binds them into larger flocs. These flocs release water more easily during mechanical dewatering.

In sludge dewatering equipment such as:

• Centrifuges

• Belt filter presses

• Screw presses

• Plate and frame filter presses

core shell 71300 significantly improves performance. It increases the dryness of sludge cake and reduces the volume of sludge that must be transported or disposed of. In addition, it improves the clarity of the filtrate or centrate.

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3. Industrial Wastewater Treatment

Core shell 71300 is also widely applied in industrial wastewater treatment systems. Many industries produce wastewater containing suspended solids, organic contaminants, oils, and colloidal particles that are difficult to remove.

Industries that commonly use core shell 71300 include:

• Pulp and paper mills

• Textile manufacturing plants

• Food and beverage processing industries

• Petrochemical refineries

• Chemical manufacturing plants

In these systems, the polymer helps aggregate fine particles and promotes rapid floc formation. This improves sedimentation and filtration efficiency and helps meet environmental discharge standards.

For example, in paper mills, core shell 71300 can remove fine fibers and fillers from wastewater. In food processing wastewater, it can help remove proteins, fats, and organic solids.

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4. Dissolved Air Flotation (DAF) Systems

Another important application of core shell 71300 is in dissolved air flotation (DAF) systems. DAF units are commonly used to remove oils, grease, and suspended solids from industrial wastewater.

When core shell 71300 is used as a flocculant before the flotation stage, it forms strong and stable flocs. These flocs attach easily to air bubbles produced in the DAF unit. As the bubbles rise to the surface, the flocs float with them and can be removed by skimming.

This improves:

• Oil and grease removal

• Suspended solids removal

• Overall flotation efficiency

DAF systems using core shell polymers often achieve better separation performance compared with conventional flocculants.

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5. Sludge Thickening

Core shell 71300 is also used in sludge thickening processes before final dewatering. In gravity thickeners or flotation thickeners, the polymer promotes rapid aggregation of fine sludge particles.

The result is:

• Higher sludge solids concentration

• Reduced sludge volume

• Improved efficiency of downstream dewatering equipment

By improving thickening efficiency, wastewater treatment plants can reduce energy consumption and chemical usage in the dewatering stage.

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6. Advantages of Core–Shell Polymer Technology

The core–shell structure of Nalco 71300 provides several technical advantages over traditional polyacrylamide flocculants:

• Faster dissolution speed in water

• Stronger floc formation

• Higher shear resistance during mixing and pumping

• Improved sludge capture efficiency

• Lower polymer dosage requirements

These benefits allow treatment facilities to achieve better separation results with lower operating costs.

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Conclusion

The application of core shell 71300 mainly focuses on water treatment and sludge management. It is widely used in municipal wastewater clarification, industrial wastewater treatment, sludge thickening, sludge dewatering, and dissolved air flotation systems. Through the combined mechanisms of charge neutralization and polymer bridging, the core shell polymer effectively aggregates suspended particles and improves solid–liquid separation efficiency. Because of its advanced polymer structure and high performance, core shell 71300 has become an important chemical used in modern wastewater treatment plants and industrial effluent management systems.