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High Charge Density Cationic Polyacrylamide for Municipal Sludge Dewatering in Belt Filter Presses

High Charge Density Cationic Polyacrylamide for Municipal Sludge Dewatering in Belt Filter Presses
Basic Properties
Place of Origin: China
Brand Name: HENGFENG
Certification: ISO 9001, ISO 14001, SGS
Model Number: CPAM
Trading Properties
Minimum Order Quantity: 1 Metric Ton
Price: USD 1,800-3,200 / Metric Ton
Payment Terms: T/T,L/C,Western Union
Supply Ability: 5,000 Metric Tons per Month
Tags:

Anionic Polymer Polyacrylamide Flocculant

Liquid Polyacrylamide Flocculant Emulsion

Water Treatment Polyacrylamide Flocculant
Product Summary
Cationic Polyacrylamide High Charge Density Municipal Sludge Dewatering Belt Filter Press Centrifuge Polymer Agent HENGFENG Cationic Polyacrylamide (CPAM) is a high charge density organic polymer specifically formulated for municipal and industrial sludge dewatering applications. With cationic ...
Product Custom Attributes
Highlight

Efficient Sludge Dewatering Polymer

,

High Cationic Charge Density

,

Belt Press & Centrifuge Flocculant

Molecular Weight:
6-12 Million
Cationic Charge Density:
10-80% (Customizable)
Solid Content:
≥ 90%
Dissolution Time:
≤ 60 Minutes (0.1% Solution)
PH Range:
4-9
Appearance:
White To Off-White Granular Powder
Bulk Density:
0.65-0.75 G/cm³
Residual Monomer:
≤ 0.05%
Shelf Life:
24 Months
Product Description
Detailed Specifications & Features
Cationic Polyacrylamide High Charge Density Municipal Sludge Dewatering Belt Filter Press Centrifuge Polymer Agent
HENGFENG Cationic Polyacrylamide (CPAM) is a high charge density organic polymer specifically formulated for municipal and industrial sludge dewatering applications. With cationic charge densities ranging from 10% to 60% and molecular weights between 8 and 12 million, this flocculant neutralizes negatively charged sludge particles and forms mechanically strong flocs that withstand the shear forces of belt filter presses, screw presses, and decanter centrifuges. The result is significantly higher cake solids content, reduced sludge volume, and lower disposal and transportation costs.
Manufactured through advanced copolymerization of acrylamide with cationic monomers, our CPAM delivers consistent performance across a wide range of sludge types including primary sludge, waste activated sludge, anaerobically digested sludge, and mixed sludge streams. The precisely controlled molecular architecture ensures optimal charge distribution along the polymer chain, maximizing both electrostatic patch flocculation and inter-particle bridging mechanisms in a single product.
Key Features
  • High Cationic Charge Density: 10-60% cationicity range provides strong electrostatic neutralization of negatively charged biosolids, enabling rapid sludge conditioning at low polymer doses.
  • Superior Floc Strength: Engineered molecular structure produces tough, shear-resistant flocs that maintain integrity through belt press compression, gravity drainage, and centrifuge high-G zones.
  • Exceptional Cake Release: Optimized formulation promotes clean filter belt and centrifuge bowl release, minimizing carryover, reducing wash water consumption, and extending equipment runtime between cleaning cycles.
  • Broad Sludge Compatibility: Effective across primary, secondary, digested, and blended municipal sludges as well as food processing, paper mill, and chemical industry biological waste streams.
  • Low Dosage Efficiency: Typical active dosage of 2-8 kg per dry ton of sludge solids achieves 18-25% cake solids on belt presses and 20-28% on centrifuges, outperforming conventional emulsion polymers.
  • Filtrate Quality Improvement: Produces clear centrate and filtrate with low suspended solids, reducing recycle stream loading on the main treatment process and improving overall plant efficiency.
Technical Specifications
Parameter Specification
Product Type Cationic Polyacrylamide (CPAM)
Molecular Weight 6-12 Million Dalton
Cationic Charge Density 10-80% (Adjustable)
Solid Content ≥ 90%
Appearance White to Off-White Granular Powder
Bulk Density 0.65-0.75 g/cm³
Dissolution Time (0.1%) ≤ 60 minutes
Effective pH Range 4-9
Residual Acrylamide Monomer ≤ 0.05%
Recommended Dewatering Equipment Belt Filter Press, Screw Press, Decanter Centrifuge
Applications
This cationic polyacrylamide is purpose-designed for sludge dewatering in municipal wastewater treatment plants processing 5,000 to over 1,000,000 population equivalent. It delivers outstanding results on belt filter presses where rapid gravity drainage and high-pressure compression demand both fast water release and robust floc structure. In centrifuge dewatering applications, the high charge density formulation ensures complete sludge conditioning at the short contact times typical of centrifuge polymer injection systems, producing dry cake and clear centrate with minimal polymer consumption. The product is equally effective for industrial biological sludge from food and beverage processing, pulp and paper manufacturing, chemical production, and textile dyeing operations. For plants transitioning from emulsion to dry polymer systems, our CPAM powder format eliminates cold-weather freezing concerns, reduces shipping weight and costs, and offers extended storage stability without the need for heated tanks or recirculation pumps.
Packaging & Quality Assurance
Standard supply is in 25 kg net weight multi-wall kraft paper bags with an integral polyethylene moisture barrier liner. Bulk packaging in 750 kg jumbo bags or 1,000 kg supersacks is available for high-volume municipal and industrial accounts. Each bag is palletized, stretch-wrapped, and labeled with batch number, production date, and net weight for full traceability. Our ISO 9001 quality management system governs every production stage from monomer purification to final packaging. Quality control tests include intrinsic viscosity measurement for molecular weight verification, colloid titration for charge density confirmation, and standardized jar testing and capillary suction time analysis for dewatering performance validation. We offer complimentary laboratory-scale dewaterability assessments using customer sludge samples to identify the optimal polymer grade and dosage before procurement. Shelf life is 24 months under dry, ventilated storage conditions at temperatures between 5°C and 40°C.
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