PolyDADMAC Cationic Polymer for Municipal Sewage Sludge Dewatering
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Product Overview
PolyDADMAC, also known as PDADMAC or Poly(dimethyl diallyl ammonium chloride), is a water-soluble cationic polymer with strong charge neutralization ability. It is widely used in municipal wastewater treatment, industrial wastewater treatment, sludge dewatering, clarification, and solid-liquid separation processes.
In municipal sewage treatment plants, sludge generated from primary sedimentation, biological treatment, and secondary clarification often contains organic matter, suspended solids, colloidal particles, and high water content. Without proper conditioning, sludge can be difficult to thicken and dewater, leading to higher disposal cost and unstable operation.
Bluwat PolyDADMAC provides strong cationic charge to neutralize negatively charged colloids and sludge particles. It promotes floc formation, improves sludge aggregation, and helps release bound water from sludge, making the dewatering process more efficient.
Application in Municipal Sewage Sludge Dewatering
Municipal wastewater treatment plants need stable sludge conditioning chemicals to improve dewatering efficiency and reduce sludge disposal volume. Bluwat PolyDADMAC can be used in:
Key Benefits
High Charge Density for Sludge Conditioning
PolyDADMAC provides strong cationic charge, helping neutralize negatively charged sludge particles and colloids. This improves sludge destabilization and supports faster floc formation.
Improved Dewatering Efficiency
The product helps form stronger and more compact sludge flocs, improving water release during belt press, filter press, screw press, or centrifuge operation.
Reduced Sludge Volume
Better solid-liquid separation can help reduce water content in sludge, supporting lower sludge volume and lower disposal cost.
Better Clarification Performance
PolyDADMAC can also improve suspended solids removal and reduce turbidity in wastewater clarification systems.
Easy Liquid Dosing
Liquid PolyDADMAC is easy to dilute, pump, and dose continuously, making it suitable for municipal wastewater treatment plants.
Works Alone or with Other Coagulants
PolyDADMAC can be used alone or combined with inorganic coagulants such as Polyaluminium Chloride, depending on sludge characteristics and treatment targets.
Wide pH Adaptability
Bluwat liquid PolyDADMAC is adaptable to a wide pH range, making it flexible for different municipal wastewater and sludge conditions.
Working Principle
PolyDADMAC improves municipal sewage sludge dewatering mainly through charge neutralization and flocculation. Treatment mechanism:
Recommended Treatment Process
Product Specifications
Available PolyDADMAC Liquid Grades
Application Method & Selection Guidance
Application Method
For municipal sewage sludge dewatering, PolyDADMAC should be selected according to sludge type, concentration, organic content, pH value, and equipment. When used alone, it is normally diluted to 0.5–5% concentration. The optimum dosage should be confirmed by jar testing. Avoid excessive shear after flocs are formed.
Selection Guidance
For high colloidal content, test medium to high molecular weight grades. For fast dispersion, lower viscosity grades are suitable. For difficult dewatering, higher molecular weight grades help improve floc strength and water release.
Packaging and Storage
Store in original containers in a cool and dry place. Keep away from heat, flame, and direct sunlight. Refer to the TDS, MSDS, and product label for detailed information.
Why Choose Bluwat PolyDADMAC?
Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals, supplying PolyDADMAC, PAM, PAC, Polyamine, and other coagulants and flocculants.