PolyDADMAC Liquid for Industrial Sludge Thickening and Volume Reduction
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Product Overview
PolyDADMAC, also known as PDADMAC or Poly(dimethyl diallylammonium chloride), is a liquid cationic polymer with strong charge neutralization ability. It is widely used in wastewater treatment, sludge dewatering, mining, paper-making, oil industry, and industrial clarification applications.
Industrial sludge often contains suspended solids, colloidal particles, organic matter, inorganic precipitates, metal hydroxides, pigments, fibers, oil residues, or process chemicals. These particles usually carry negative surface charges and remain stable in water, making sludge difficult to settle, thicken, or dewater.
Bluwat PolyDADMAC Liquid provides high cationic charge density to neutralize sludge particles and promote aggregation. It helps form larger and stronger flocs, improves water release, increases sludge concentration during thickening, and reduces the volume of sludge sent to mechanical dewatering or final disposal.
Application in Industrial Sludge Thickening
Industrial wastewater treatment plants often need efficient sludge conditioning before thickening, filtration, centrifugation, or disposal. PolyDADMAC Liquid can be applied in sludge thickening systems to improve separation between solids and water.
Typical applications include:
• Industrial sludge thickening
• Sludge volume reduction
• Chemical sludge conditioning
• Biological sludge thickening
• Mixed sludge treatment
• DAF sludge thickening
• Clarifier sludge treatment
• Filter press pretreatment
• Belt press and centrifuge support
• Wastewater clarification and SS removal
Key Benefits
High Charge Density
PolyDADMAC provides strong positive charge to neutralize negatively charged sludge particles and colloids. This helps break sludge stability and promotes faster aggregation.
Thickening Efficiency
The product helps form larger, denser flocs, allowing sludge solids to separate more efficiently from water in gravity thickeners or settling tanks.
Volume Reduction
By improving solid-liquid separation and water release, PolyDADMAC helps reduce the volume of sludge that needs to be pumped, stored, or disposed of.
Clearer Supernatant
PolyDADMAC can reduce fine solids carryover, improving supernatant clarity and lowering the load returned to the wastewater treatment system.
Easy Handling
Liquid PolyDADMAC is easy to dilute, pump, and dose continuously, making it suitable for automatic dosing systems.
Flexible Selection
Bluwat offers 20%, 40%, 45%, and 50% liquid PolyDADMAC grades with different molecular weight and viscosity options.
Working Principle
PolyDADMAC improves industrial sludge thickening mainly through charge neutralization and floc formation.
- Fine sludge particles and colloids carry negative surface charges.
- PolyDADMAC provides strong cationic charge to neutralize these particles.
- Destabilized particles collide and aggregate.
- Larger sludge flocs are formed.
- Water separates more easily from the sludge structure.
- Sludge becomes more concentrated, and overall sludge volume is reduced.
Recommended Treatment Process
Product Specifications
Available PolyDADMAC Liquid Grades
DA 20% Series
DA 201: Low MW, <200 cps | DA 202: Medium MW, 200-700 cps | DA 203: 700-1000 cps | DA 204: High MW, 1000-2000 cps | DA 205: Very High MW, 2000-3000 cps
DA 40% Series
DA 401-403: Low to Medium MW, up to 3000 cps | DA 404-405: High MW, up to 8000 cps | DA 406-408: Very High MW, 8000 to >15000 cps
DA 45% & 50% Series
DA 451: High MW, 8000-12000 cps | DA 501-507: Range from Low-Medium to Very High MW (up to >15000 cps)
Application Method
For industrial sludge thickening, PolyDADMAC Liquid should be selected based on sludge source, concentration, pH, and equipment. Normally diluted to 0.5–5% concentration before dosing. Jar testing is essential to confirm optimum dosage and mixing intensity.
Product Selection Guidance
- High colloidal content: Test medium to high molecular weight grades first.
- Fast dispersion needed: Lower viscosity grades are easier to apply.
- Difficult sludge: High to very high molecular weight grades help improve floc strength.
Use with PAM
PolyDADMAC and PAM can be used together. PolyDADMAC provides charge neutralization and destabilization, while PAM provides polymer bridging and floc enlargement. Dosing PolyDADMAC before PAM often improves final separation performance.
Packaging and Storage
Available in 25L, 200L plastic drums, and 1000L IBC drums. Store in original containers in a cool, dry place away from direct sunlight and heat.
Why Choose Bluwat PolyDADMAC?
- Professional manufacturer and exporter of water treatment chemicals.
- Full range of 20–50% liquid grades available.
- Multiple viscosity and molecular weight options.
- Technical support for jar testing and product selection.
- Stable export supply with COA, TDS, and MSDS.
FAQ
Yes. It is used for thickening, conditioning, solids removal, and volume reduction.
By neutralizing charges and forming larger flocs, it improves water separation and increases sludge concentration.
Yes, dosing PolyDADMAC before PAM is common for difficult sludge to achieve better results.
Dosage should be determined through jar testing and plant trials based on settling speed and supernatant clarity.