Polyamine products such as FL2250 and FL2449 are liquid cationic coagulants widely used in water and wastewater treatment. As low- to medium–molecular-weight cationic polymers, polyamine FL2250 and FL2449 are designed mainly for charge neutralization, colloidal destabilization, and micro-floc formation. Their applications cover municipal water treatment, industrial wastewater treatment, sludge conditioning, and various process industries where efficient solid–liquid separation is required.

1. Drinking Water and Raw Water Treatment

One of the primary applications of polyamine FL2250 and FL2449 is in drinking water and surface water clarification. Raw water often contains negatively charged colloids such as clay, silt, algae, and natural organic matter. Polyamine FL2250 and FL2449 neutralize these negative charges rapidly, allowing fine particles to agglomerate into micro-flocs. Compared with traditional inorganic coagulants, polyamine coagulants produce less sludge and operate effectively over a wider pH range. They are often used alone or in combination with aluminum or iron salts to reduce turbidity, color, and organic content.

2. Industrial Wastewater Treatment

Polyamine FL2250 and FL2449 are widely applied in industrial wastewater treatment, including textile, chemical, steel, food processing, and electronic industries. Many industrial effluents contain finely dispersed solids, dyes, and emulsified oils that are difficult to remove. Polyamine FL2250 and FL2449 act as primary coagulants, destabilizing suspended solids and improving clarification efficiency. Their fast reaction speed makes them especially suitable for high-flow or compact treatment systems.

3. Sludge Conditioning and Dewatering

Another important application of polyamine FL2250 and FL2449 is sludge conditioning prior to dewatering. In wastewater treatment plants, sludge particles usually carry negative surface charges that hinder water release. Polyamine FL2250 and FL2449 neutralize these charges and form dense, compact flocs. This significantly improves the performance of belt filter presses, centrifuges, and screw presses. As a result, higher cake solids, lower polymer consumption, and reduced sludge volume are achieved.

4. Paper and Pulp Industry

In the paper and pulp industry, polyamine FL2250 and FL2449 are used for white water clarification, anionic trash control, and retention aid systems. These polyamine products neutralize dissolved and colloidal anionic contaminants such as lignin and resin acids. Improved charge balance enhances filler and fiber retention, leading to better paper quality and reduced chemical consumption.

5. Oilfield and Refinery Wastewater

Polyamine FL2250 and FL2449 are also applied in oilfield produced water and refinery wastewater treatment. These wastewaters often contain oil droplets, suspended solids, and chemical additives. Polyamine coagulants improve oil–water separation and reduce suspended solids loading before flotation or biological treatment units.

Conclusion

In summary, polyamine FL2250 and FL2449 are versatile and efficient cationic coagulants. Their main applications include drinking water treatment, industrial wastewater clarification, sludge conditioning and dewatering, papermaking processes, and oilfield wastewater treatment. By providing rapid charge neutralization and stable performance, polyamine FL2250 and FL2449 help improve treatment efficiency, reduce operating costs, and support sustainable water management.