PolyDADMAC Cationic Polymer for DAF Float Sludge Concentration
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Product Overview
PolyDADMAC, also known as PDADMAC or Poly(dimethyl diallyl ammonium chloride), is a liquid cationic polymer with strong charge neutralization ability. It is widely used in wastewater treatment, sludge dewatering, industrial clarification, oil industry, mining, paper-making, and textile wastewater treatment applications.
In dissolved air flotation systems, DAF float sludge is generated when suspended solids, oil droplets, fibers, pigments, grease, biological solids, and chemical flocs are floated to the water surface and removed by skimming. This float sludge often contains high water content and unstable fine particles. If not properly conditioned, it may be difficult to concentrate, thicken, pump, or dewater.
Bluwat PolyDADMAC Cationic Polymer provides strong cationic charge to neutralize negatively charged particles and colloids in DAF float sludge. It helps strengthen floc structure, improve sludge-water separation, increase sludge concentration, and reduce the total volume of sludge sent to filter press, belt press, screw press, or centrifuge systems.
Application in DAF Float Sludge Concentration
DAF systems are widely used in industrial wastewater treatment where suspended solids, oils, fats, fibers, pigments, and colloidal pollutants need to be removed efficiently. PolyDADMAC can be applied in the DAF sludge treatment stage to improve float sludge concentration and downstream dewatering performance.
Typical applications include:
Key Benefits
PolyDADMAC provides strong positive charge to neutralize negatively charged suspended solids, colloids, and oil-associated particles.
Strengthens particle aggregation and floc structure, reducing free water and supporting higher sludge concentration.
Improved solid-liquid separation helps reduce the volume of sludge for storage, transport, or disposal.
Conditioned DAF sludge is more suitable for filter presses, screw presses, or centrifuges.
Clearer Filtrate or Centrate
PolyDADMAC helps reduce fine solids carryover during thickening or dewatering, improving filtrate clarity.
Suitable for Difficult Industrial Sludge
Offers strong conditioning ability for sludge containing oil, grease, fibers, and chemical precipitates.
Easy Liquid Dosing
Liquid PolyDADMAC is easy to dilute and pump, making it ideal for automatic dosing systems.
Can Be Used Alone or with PAM
Can be used alone for charge neutralization or combined with PAM for larger floc size and better performance.
Working Principle
PolyDADMAC improves DAF float sludge concentration mainly through charge neutralization and floc strengthening.
Recommended Treatment Process
Product Specifications
| Product Name | BLU DA Series PolyDADMAC Liquid |
| Chemical Name | Poly(dimethyl diallylammonium chloride) |
| CAS Number | 26062-79-3 |
| Appearance | Colorless to light yellow liquid |
| Solid Content | 20–50% |
| pH Value | 3.0–7.0 |
| Specific Gravity | 1.01–1.10 (at 25°C) |
| Charge Type | Cationic |
| Viscosity | Below 200 cps to above 15000 cps (depending on grade) |
| Package | 25L, 200L, or 1000L IBC drum |
Available PolyDADMAC Liquid Grades
DA 20% Series
DA 40% Series
DA 50% Series
Application Method & Guidance
For DAF float sludge concentration, PolyDADMAC should be selected according to sludge source, oil content, and equipment type. Normally diluted to 0.5–5% concentration before dosing. Optimum dosage should be confirmed by jar testing.
Selection Guidance:
Use with PAM
PolyDADMAC and PAM can be used together. PolyDADMAC provides charge neutralization while PAM provides polymer bridging. For difficult sludge, dose PolyDADMAC before PAM to improve conditioning and final dewatering performance.
Packaging and Storage
Store in original containers in a cool, dry place. Keep away from heat and direct sunlight. Refer to TDS/MSDS for details.
Why Choose Bluwat PolyDADMAC?
Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals.