PolyDADMAC Cationic Coagulant for Emergency Drinking Water Purification
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.
During emergency drinking water treatment, raw water sources may include rivers, lakes, reservoirs, floodwater, temporary surface water sources, or stored raw water. These water sources can contain high turbidity, clay, silt, organic matter, algae, colloids, and suspended particles. Without effective coagulation, these fine impurities are difficult to remove quickly by simple settling or filtration.
Bluwat PolyDADMAC Cationic Coagulant provides strong positive charge to neutralize negatively charged suspended particles. It promotes the formation of larger flocs, making turbidity-causing impurities easier to remove by settling, clarification, flotation, or filtration.
PolyDADMAC is used as a clarification aid in emergency water treatment, but it does not replace filtration, disinfection, or final potable water safety control. For drinking water use, the applicable product grade, certificate scope, dosage limit, and local regulations should be confirmed before application.
Application in Emergency Drinking Water Purification
Emergency drinking water treatment requires fast response, easy chemical handling, and reliable clarification performance under variable raw water conditions. Bluwat PolyDADMAC Liquid can be used in temporary or mobile water purification systems to improve raw water clarification before filtration and disinfection.
Typical applications include:
Key Benefits
Fast Charge Neutralization
PolyDADMAC provides high cationic charge density, helping rapidly neutralize negatively charged clay, silt, colloids, algae-associated particles, and fine suspended solids.
Suitable for Emergency Turbid Water Clarification
Emergency raw water quality can change quickly. PolyDADMAC helps improve coagulation and floc formation in high-turbidity or unstable raw water conditions.
Improved Floc Formation
The product helps fine particles aggregate into larger and more settleable flocs, improving sedimentation and clarification efficiency.
Supports Filtration Protection
By reducing turbidity and suspended solids before filtration, PolyDADMAC can help lower filter loading and support more stable filter operation.
Easy Liquid Dosing
Liquid PolyDADMAC is easy to dilute, pump, and dose, making it suitable for temporary water treatment systems, containerized plants, and mobile purification units.
Can Be Used Alone or with PAC
PolyDADMAC can be used as a primary organic coagulant or together with Polyaluminium Chloride, alum, ACH, or ferric salts to improve floc size, settling speed, and clarification performance.
Effective at Optimized Dosage
Due to its high charge density, PolyDADMAC can achieve effective clarification at optimized dosage levels after jar testing.
Wide pH Adaptability
Bluwat liquid PolyDADMAC can adapt to a wide pH range, helping emergency treatment systems handle different raw water conditions.
Important Note for Drinking Water Safety
PolyDADMAC is a coagulant for clarification and suspended solids removal. It helps remove turbidity, colloids, and fine particles, but it is not a disinfectant.
For emergency drinking water purification, PolyDADMAC should be used as part of a complete treatment process that may include:
- Coagulation
- Flocculation
- Sedimentation or clarification
- Filtration
- Disinfection
- Final water quality testing
The treated water should meet local drinking water standards before human consumption.
Working Principle
PolyDADMAC improves emergency water clarification mainly through charge neutralization and floc formation.
Treatment mechanism:
- 1 Emergency raw water contains negatively charged clay, silt, organic matter, algae, colloids, and suspended particles.
- 2 PolyDADMAC provides strong positive charge to neutralize particle surfaces.
- 3 Destabilized particles begin to collide and aggregate.
- 4 Larger flocs form during flocculation.
- 5 Flocs settle in clarifiers or are removed by filtration.
- 6 Clarified water proceeds to filtration and disinfection.
- 7 Final treated water quality is confirmed before use.
Recommended Treatment Process
Product Specifications
| Product Name | PolyDADMAC Cationic Coagulant |
| 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
DA 20% Series
DA 40% Series
DA 45% Series
DA 50% Series
Application Method
For emergency drinking water purification, PolyDADMAC should be selected according to raw water turbidity, suspended solids concentration, organic matter, algae content, pH value, temperature, treatment flow rate, mixing condition, and final clarified water quality target.
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 using actual emergency raw water samples. The dosing point and mixing speed should be carefully controlled to ensure uniform chemical dispersion and proper floc formation.
For emergency potable water supply, users should also confirm:
- Applicable product grade
- Certificate scope if required
- Maximum use level
- Local drinking water regulations
- Final water quality after filtration and disinfection
Product Selection Guidance
For mobile or temporary treatment units requiring easy dilution and low viscosity, DA 201 to DA 203 or DA 401 to DA 403 can be tested first.
For highly turbid emergency raw water, floodwater, or raw water with difficult colloids, DA 204, DA 205, DA 404, or DA 405 may help improve floc size and settling speed.
For systems requiring higher active content and lower logistics volume, 40%, 45%, or 50% liquid grades can be considered after checking dosing system compatibility.
Final product selection should be based on floc formation, settling speed, clarified water turbidity, filtration performance, dosage, storage convenience, and total emergency treatment cost.
Use with PAC or Other Coagulants
PolyDADMAC can be used alone or together with inorganic coagulants such as PAC, alum, ACH, ferric chloride, or ferric sulfate.
PolyDADMAC mainly provides strong charge neutralization.
PAC, alum, ACH, and ferric salts mainly provide inorganic coagulation and hydroxide floc formation.
In emergency raw water treatment, combined use may help improve floc strength, turbidity removal, settling performance, and filtration stability. The best dosing sequence and dosage should be confirmed by jar testing.
Packaging and Storage
Bluwat PolyDADMAC Liquid is available in:
- 25L plastic drums
- 200L plastic drums
- 1000L IBC drums
Store the product in original containers in a cool and dry place. Keep away from heat, flame, and direct sunlight. For emergency stockpiling, storage conditions should be checked regularly to ensure product stability. Refer to the TDS, MSDS, product label, and applicable drinking water documents for detailed handling and storage information.
Why Choose Bluwat PolyDADMAC?
Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals, supplying PolyDADMAC, PAC, PAM, ACH, Polyamine, and other coagulants and flocculants for municipal, industrial, and emergency water treatment applications.
Advantages: