NSF-Grade PolyDADMAC Liquid Flocculant for Drinking Water Purification Plants
Product Overview
PolyDADMAC, also known as PDADMAC or Poly(dimethyldiallylammonium chloride), is a liquid cationic polymer with strong charge neutralization ability. It is widely used in drinking water treatment, wastewater treatment, sludge dewatering, mining, paper-making, textile, oil industry, and industrial clarification applications.
In drinking water purification plants, raw water may contain clay, silt, algae, natural organic matter, microorganisms, colloids, and fine suspended particles. These impurities are usually negatively charged and difficult to remove by settling or filtration alone.
Bluwat PolyDADMAC Liquid Flocculant provides strong positive charge to neutralize these particles and promote the formation of larger, denser flocs. The formed flocs can be removed more efficiently by sedimentation, clarification, flotation, or filtration, helping improve treated water clarity and reduce the load on downstream filters.
For potable water treatment projects, the NSF-grade product, certificate scope, dosage limit, and local drinking water regulations should be confirmed before commercial application.
Application in Drinking Water Purification Plants
Bluwat PolyDADMAC Liquid Flocculant can be used in municipal and industrial drinking water purification plants to improve coagulation, flocculation, clarification, and filtration performance.
Typical applications include:
Key Benefits
NSF-Grade Option for Drinking Water Treatment
Bluwat PolyDADMAC can be supplied for drinking water purification projects requiring NSF-grade cationic polymer solutions. It is suitable for potable water applications when used according to the approved product grade, certificate scope, dosage limit, and local regulations.
High Charge Density Cationic Polymer
PolyDADMAC provides strong positive charge to neutralize negatively charged clay, silt, algae, organic matter, and colloidal particles in raw water.
Improved Floc Formation
The product helps destabilized particles aggregate into larger and stronger flocs, improving sedimentation and clarification performance.
Better Turbidity Removal
By enhancing coagulation and flocculation, PolyDADMAC helps reduce turbidity and improve clarified water quality before filtration.
Reduced Filter Loading
Better floc formation and solids removal can reduce the suspended solids load entering filters, helping improve filter operation and reduce backwash pressure.
Can Be Used Alone or with Inorganic Coagulants
PolyDADMAC can be used as a primary coagulant or as a coagulant aid together with PAC, alum, ACH, ferric chloride, or ferric sulfate.
Effective at Low Dosage
Due to its high charge density, PolyDADMAC can support efficient clarification at relatively low dosage after proper jar testing and plant optimization.
Easy Liquid Dosing
Liquid PolyDADMAC is easy to dilute, pump, and dose continuously, making it suitable for automatic chemical dosing systems in drinking water purification plants.
Working Principle
PolyDADMAC improves drinking water purification mainly through charge neutralization and floc formation.
Treatment mechanism:
- Raw water contains negatively charged suspended solids, clay, silt, algae, organic matter, and colloids.
- PolyDADMAC provides strong cationic charge to neutralize particle surfaces.
- Destabilized particles begin to collide and aggregate.
- Larger flocs form during the flocculation stage.
- Flocs are removed by sedimentation, clarification, flotation, or filtration.
- Treated water clarity improves before final filtration and disinfection.
Recommended Treatment Process
Product Specifications
| Technical Specifications | |
|---|---|
| Product Name | NSF-Grade PolyDADMAC Liquid Flocculant |
| Series | BLU DA Series PolyDADMAC Liquid Grade |
| Chemical Name | Poly(dimethyldiallylammonium chloride) |
| Short Name | PolyDADMAC / PDADMAC |
| CAS Number | 26062-79-3 |
| Appearance | Colorless to light yellow liquid |
| Solid Content | 20–50% |
| pH Value | 3.0–7.0 |
| Specific Gravity at 25°C | 1.01–1.10 |
| Charge Type | Cationic |
| Charge Density | High charge density |
| Relative Molecular Weight | Low, medium, high, and very high grades available |
| Brookfield Viscosity at 25°C | Below 200 cps to above 15000 cps depending on grade |
| Application Fields | Drinking water treatment, wastewater treatment, sludge dewatering, mining, paper-making, textile, oil industry, color removal, and industrial clarification |
| Package | 25L plastic drum, 200L plastic drum, or 1000L IBC drum |
Available PolyDADMAC Liquid Grades
Relative Molecular Weight: Low
Brookfield Viscosity: Below 200 cps
Recommended Use: Low-viscosity dosing systems, easy dilution, and fast dispersion in drinking water clarification.
Relative Molecular Weight: Medium
Brookfield Viscosity: 200–700 cps
Recommended Use: General raw water clarification and turbidity removal.
Relative Molecular Weight: Medium
Brookfield Viscosity: 700–1000 cps
Recommended Use: Balanced flocculation performance for surface water treatment.
Relative Molecular Weight: High
Brookfield Viscosity: 1000–2000 cps
Recommended Use: Higher turbidity raw water and stronger floc formation.
Relative Molecular Weight: Very High
Brookfield Viscosity: 2000–3000 cps
Recommended Use: Difficult raw water conditions requiring stronger floc structure.
Relative Molecular Weight: Low
Brookfield Viscosity: Below 500 cps
Relative Molecular Weight: Medium
Brookfield Viscosity: 500–1000 cps
Relative Molecular Weight: Medium
Brookfield Viscosity: 1000–3000 cps
Relative Molecular Weight: High
Brookfield Viscosity: 3000–5000 cps
Relative Molecular Weight: High
Brookfield Viscosity: 5000–8000 cps
Relative Molecular Weight: Very High
Brookfield Viscosity: 8000–12000 cps
Relative Molecular Weight: Very High
Brookfield Viscosity: 12000–15000 cps
Relative Molecular Weight: Very High
Brookfield Viscosity: Above 15000 cps
Relative Molecular Weight: High
Brookfield Viscosity: 8000–12000 cps
Relative Molecular Weight: Low Medium
Brookfield Viscosity: 1000–2000 cps
Relative Molecular Weight: Medium
Brookfield Viscosity: 2000–3000 cps
Relative Molecular Weight: High
Brookfield Viscosity: 3000–5000 cps
Relative Molecular Weight: High
Brookfield Viscosity: 5000–8000 cps
Relative Molecular Weight: Very High
Brookfield Viscosity: 8000–12000 cps
Relative Molecular Weight: Very High
Brookfield Viscosity: 12000–15000 cps
Relative Molecular Weight: Very High
Brookfield Viscosity: Above 15000 cps
Application Method
For drinking water purification plants, PolyDADMAC should be selected according to raw water turbidity, suspended solids, organic matter, algae content, water temperature, pH value, treatment process, and required clarified water quality.
When used alone, PolyDADMAC is normally diluted to 0.5–5% concentration based on solid content before dosing.
The optimum dosage should be confirmed by jar testing and plant trials. The dosing point and mixing speed should be carefully controlled to ensure uniform chemical dispersion and proper floc growth.
For potable water use, customers should confirm the applicable NSF-grade product, certificate validity, maximum use level, and local regulatory requirements before application.
Product Selection Guidance
For low to medium turbidity raw water, DA 201 to DA 203 or DA 401 to DA 403 can be tested first for easy dispersion and fast charge neutralization.
For high turbidity surface water, algae-containing water, or difficult colloidal particles, DA 204, DA 205, DA 404, or DA 405 may provide stronger floc formation.
For systems requiring higher active content and lower transportation volume, 40%, 45%, or 50% liquid grades may be considered after confirming dosing system compatibility.
Final product selection should be based on turbidity removal, floc size, settling speed, filter performance, residual control, dosage, and total treatment cost.
Use with PAC or Other Coagulants
PolyDADMAC can be used alone or together with inorganic coagulants.
PolyDADMAC mainly provides strong charge neutralization and flocculation support.
PAC, alum, ACH, and ferric salts mainly provide inorganic coagulation and hydroxide floc formation.
Combined use may improve floc quality, settling rate, turbidity removal, and filter performance. The best dosing sequence and dosage should be confirmed through jar testing using actual raw water samples.
Packaging and Storage
Bluwat PolyDADMAC Liquid is available in:
Store the product in original containers in a cool and dry place. Keep away from heat, flame, and direct sunlight. Refer to the TDS, MSDS, product label, and certificate documents for detailed storage, handling, and potable water application requirements.
Why Choose Bluwat NSF-Grade PolyDADMAC Liquid Flocculant?
Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals, supplying PolyDADMAC, PAM, PAC, ACH, Polyamine, and other coagulants and flocculants for municipal drinking water and industrial wastewater treatment.
Advantages:
FAQ
Yes. PolyDADMAC can be used in drinking water purification plants for raw water clarification, turbidity removal, suspended solids reduction, and flocculation improvement. For potable water use, the applicable NSF-grade certificate scope and dosage limit should be confirmed.
PolyDADMAC neutralizes negatively charged particles and colloids, helping them form larger flocs that can be removed by sedimentation, clarification, flotation, or filtration.
Yes. PolyDADMAC can work as a cationic polymer flocculant or coagulant aid to improve floc formation and clarification performance.
Yes. PolyDADMAC can be used with PAC to improve coagulation efficiency, floc strength, settling speed, and clarified water quality.
The CAS number of PolyDADMAC is 26062-79-3.
Bluwat PolyDADMAC Liquid is available in 20%, 40%, 45%, and 50% solid content series.
For easy dilution and low-viscosity dosing, 20% grades such as DA 201 to DA 203 can be tested first. For stronger floc formation, DA 204, DA 205, or suitable 40% grades can be evaluated through jar testing.
When used alone, PolyDADMAC is commonly diluted to 0.5–5% concentration based on solid content before dosing.
Dosage should be determined through jar testing and plant trials based on raw water turbidity, pH, organic matter, algae content, floc formation, settling speed, filtration performance, finished water quality, and regulatory requirements.