Paper Mill Sludge Thickening Polymer | Polyacrylamide Flocculant for Paper Sludge Treatment
Product Introduction
Paper mills generate large quantities of sludge from wastewater clarification systems, dissolved air flotation units, biological treatment systems, and fiber recovery processes. These sludges often contain fine fibers, fillers, organic solids, starch residues, ink particles, and process chemicals.
Efficient sludge thickening is essential for reducing sludge volume, improving dewatering performance, and lowering sludge disposal costs.
Bluwat Blufloc Polyacrylamide is specially developed for paper mill sludge thickening and solid-liquid separation applications. The polymer rapidly bridges suspended solids into large and dense flocs, allowing faster sedimentation and improved water release.
According to the Blufloc Polyacrylamide Technical Data Sheet, the product is available in anionic, cationic, and nonionic forms with varying molecular weights and ionic charge densities suitable for industrial sludge treatment systems.

Main Benefits of Sludge Thickening PAM
Improve Sludge Settling Speed
Paper mill sludge often contains fine suspended solids that settle slowly. Blufloc PAM helps:
- ● Form larger sludge flocs
- ● Accelerate settling speed
- ● Improve thickener performance
- ● Produce clearer supernatant water
This increases the efficiency of sludge treatment systems.
Reduce Sludge Moisture Content
Efficient flocculation improves water release during mechanical dewatering. Benefits include:
- ● Lower sludge cake moisture
- ● Reduced sludge transportation costs
- ● Improved landfill efficiency
- ● Lower sludge disposal expenses
Improve Dewatering Equipment Performance
The polymer enhances operation of:
- ● Belt filter presses
- ● Screw presses
- ● Plate and frame presses
- ● Centrifuges
- ● Gravity thickeners
Operators often achieve more stable sludge cake formation and improved throughput.
Reduce Wastewater Treatment Load
Improved sludge separation reduces suspended solids carryover and improves overall wastewater treatment efficiency. Advantages include:
- ● Lower COD loading
- ● Reduced solids carryover
- ● Better water clarification
- ● Improved process stability
Typical Applications in Paper Mills
Typical Technical Specifications
According to the Blufloc TDS:
| Parameter | Specification |
|---|---|
| Appearance | Off-white granular powder |
| Ionic Type | Anionic / Cationic |
| Molecular Weight | 5–25 million |
| Solid Content | Minimum 89% |
| Recommended Working Concentration | 0.1–0.5% |
| Shelf Life | 2 Years |
Recommended Preparation and Dosing
For optimal sludge thickening performance:
- Recommended concentration: 0.1–0.5%
- Dissolving time: approximately 1 hour
- Agitation speed: 200–400 rpm
Proper dissolution is important to ensure complete polymer activation and stable flocculation performance. Typical dosing locations include:
- Sludge thickener inlet
- DAF sludge tank
- Filter press feed line
- Centrifuge feed system
Laboratory sludge testing is recommended before full-scale application.
Why Choose Bluwat Chemicals
Bluwat Chemicals is a professional manufacturer and exporter of polyacrylamide for industrial wastewater and sludge treatment applications.
- More than 25 years manufacturing experience
- Stable molecular weight production
- Customized ionic charge products
- Exporting to over 80 countries
- Technical support based on real sludge testing
- Factory direct supply with reliable quality
Our PAM products are widely used in paper mills, municipal wastewater plants, mining operations, textile wastewater treatment systems, and industrial sludge dewatering facilities worldwide.
Packaging and Storage
Packaging options
- 25 kg kraft paper bags with inner PE liner
- 750 kg jumbo bags
Storage recommendations
- Store in cool and dry conditions
- Avoid direct sunlight
- Keep sealed after opening










