PolyDMDAAC / PolyDADMAC Polymer for Effluent Treatment and Sludge Dewatering
BLUWAT Chemicals Factory Video
Watch our factory video to learn more about BLUWAT Chemicals production, packaging and water treatment chemical supply capability.
PolyDMDAAC / PolyDADMAC Polymer for Effluent Treatment and Sludge Dewatering
BLUWAT PolyDMDAAC, also known as PolyDADMAC or PDADMAC, is a high charge density cationic polymer designed for effluent treatment, sludge dewatering, wastewater clarification and solid-liquid separation.
In many municipal and industrial wastewater treatment plants, fine suspended solids, colloids, organic impurities and sludge particles are difficult to settle naturally. These particles usually carry negative charges and remain stable in water. PolyDMDAAC provides strong positive charges to neutralize these particles, improve floc formation and support faster separation.
BLUWAT BLU DA Series Liquid PolyDADMAC is available in 20% to 50% solid content grades. It is easy to dilute, pump and dose, making it suitable for continuous wastewater treatment systems and sludge dewatering processes.
Product Overview
PolyDMDAAC / PolyDADMAC is a water-soluble cationic polymer coagulant. It can be used alone as an organic coagulant or used together with inorganic coagulants such as Polyaluminium Chloride.
For effluent treatment, it helps reduce turbidity, suspended solids and colloidal impurities. For sludge dewatering, it helps condition sludge, improve floc structure and support better water release before mechanical dewatering equipment.
BLUWAT PolyDADMAC is widely used in municipal wastewater, textile wastewater, paper mill wastewater, chemical wastewater, mining wastewater, oilfield wastewater, industrial effluent clarification and sludge treatment.
Key Benefits
Strong Effluent Clarification
PolyDMDAAC helps destabilize suspended solids and colloids in wastewater. After dosing and proper mixing, fine particles can gather into larger flocs, making sedimentation, flotation or filtration easier.
Improved Sludge Dewatering
In sludge treatment systems, PolyDADMAC helps improve sludge conditioning. It supports stronger floc formation, clearer filtrate and more stable dewatering operation before filter press, belt press, centrifuge or screw press.
High Charge Density
The high cationic charge density of PolyDMDAAC makes it effective for charge neutralization. This is especially useful for wastewater containing negatively charged particles, colloids and organic matter.
Easy-to-Use Liquid Form
Liquid PolyDADMAC is convenient for plant operation. It can be diluted quickly and dosed by chemical dosing pumps, which makes it suitable for both batch treatment and continuous treatment systems.
Can Be Used Alone or with PAC
PolyDADMAC can be used alone or together with PAC. In many wastewater systems, the combination of PolyDADMAC and PAC can improve floc strength, settling speed and overall clarification performance.
Effective at Low Dosage
PolyDADMAC can be economical and effective at relatively low dosage levels. The most suitable dosage should be confirmed by jar test according to wastewater quality, sludge characteristics and treatment target.
Wide Application Range
It can be used for effluent treatment, sludge dewatering, turbidity reduction, color removal support, paper making, mining, oilfield water treatment and industrial wastewater clarification.
Technical Information
Product Name: PolyDMDAAC / PolyDADMAC Polymer
Chemical Name: Poly dimethyl diallyl ammonium chloride
Short Name: PolyDADMAC, PDADMAC, PolyDMDAAC
CAS Number: 26062-79-3
Appearance: Colorless to light yellow liquid
Ionic Type: Cationic polymer
Solid Content: 20% to 50%
Charge Density: High
Typical pH: 3.0 to 7.0
Specific Gravity at 25°C: 1.01 to 1.10
Application: Effluent treatment, sludge dewatering, wastewater clarification, turbidity reduction, color removal support
Package: 25L plastic drum, 200L plastic drum or 1000L IBC drum
Available Liquid PolyDADMAC Grades
BLUWAT supplies different liquid PolyDADMAC grades according to solid content, viscosity and molecular weight requirements.
20% solid content series includes DA 201, DA 202, DA 203, DA 204 and DA 205. These grades cover low to very high molecular weight options with viscosity ranges from below 200 cps to 2000–3000 cps.
40% solid content series includes DA 401 to DA 408. These grades cover low, medium, high and very high viscosity options, with viscosity ranges from below 500 cps to above 15000 cps.
45% solid content grade DA 451 is a high molecular weight grade with viscosity around 8000–12000 cps.
50% solid content series includes DA 501 to DA 507. These grades cover low-medium, medium, high and very high viscosity options, with viscosity ranges from 1000–2000 cps to above 15000 cps.
The right grade should be selected according to wastewater type, sludge condition, required floc size, settling speed, dosing system and treatment process.
Main Applications
Industrial Effluent Treatment
Industrial effluent often contains suspended solids, colloids, organic matter and unstable fine particles. PolyDMDAAC helps neutralize these impurities and improves coagulation efficiency.
It is suitable for chemical wastewater, textile wastewater, paper mill wastewater, food processing wastewater, metal processing wastewater and other industrial effluent systems.
Sludge Dewatering
Sludge dewatering is one of the important applications of PolyDADMAC. It helps condition sludge before mechanical dewatering and supports better solid-liquid separation.
It can be used before filter press, belt press, screw press, centrifuge and other dewatering equipment. Proper dosage can help improve filtrate clarity, dewatering speed and sludge cake formation.
Municipal Wastewater Treatment
In municipal wastewater treatment plants, PolyDADMAC can be used for primary clarification, sludge conditioning and solid-liquid separation improvement. It helps make treatment operation more stable when influent quality changes.
Textile Wastewater
Textile wastewater may contain dyes, surfactants, suspended solids and organic impurities. PolyDADMAC helps improve clarification and can support color removal when used together with decolorizing agent, PAC or PAM.
Paper Mill Wastewater
In paper mill wastewater treatment, PolyDMDAAC can help remove fine fibers, suspended solids and organic color. It can also support sludge formation and dewatering performance.
Mining Wastewater
For coal washing, gold mining, diamond mining and mineral processing wastewater, PolyDADMAC helps remove fine suspended solids and improve process water clarification.
Oilfield and Oily Wastewater
In oilfield water treatment and some oily wastewater systems, PolyDADMAC can help destabilize fine particles and improve separation when used in the correct treatment sequence.
How PolyDMDAAC Works
Most suspended particles and colloids in wastewater carry negative charges. These charges keep particles dispersed and prevent them from settling naturally.
PolyDMDAAC provides strong positive charges. After dosing, it neutralizes the negative surface charges of suspended solids and colloids. Once the particles lose stability, they can collide and form larger flocs.
These larger flocs can then be separated by sedimentation, dissolved air flotation, filtration or sludge dewatering equipment.
This charge neutralization mechanism makes PolyDMDAAC effective for both effluent clarification and sludge conditioning.
Recommended Use Method
For water and wastewater treatment, PolyDADMAC can be used alone or together with Polyaluminium Chloride.
When used alone, it is recommended to dilute the product to 0.5% to 5% concentration based on solid content before dosing.
The actual dosage depends on wastewater composition, suspended solids level, sludge concentration, pH value, color intensity and treatment target. Jar testing is recommended before full-scale application.
The dosing point and mixing speed should be carefully controlled. The chemical should be mixed evenly with wastewater or sludge, but excessive mixing should be avoided after flocs are formed because strong shear may break the flocs.
Typical Effluent Treatment Process
Step 1: Test wastewater pH, turbidity, color and suspended solids
Step 2: Adjust pH if necessary according to jar test result
Step 3: Add PolyDMDAAC or PolyDADMAC coagulant
Step 4: Add PAC if stronger coagulation is required
Step 5: Add PAM flocculant if larger flocs and faster settling are needed
Step 6: Separate flocs by sedimentation, DAF or filtration
Step 7: Check final effluent clarity and optimize dosage
Typical Sludge Dewatering Process
Step 1: Check sludge concentration and sludge type
Step 2: Dilute PolyDADMAC to the required working concentration
Step 3: Add PolyDADMAC into the sludge conditioning tank
Step 4: Mix evenly to support floc formation
Step 5: Feed conditioned sludge into filter press, belt press, screw press or centrifuge
Step 6: Observe filtrate clarity, sludge cake moisture and dewatering speed
Step 7: Adjust dosage according to site performance
Product Selection Guide
Choose low viscosity grades when easy pumping, fast dilution and lower molecular weight performance are required.
Choose medium viscosity grades for general wastewater clarification and municipal or industrial effluent treatment.
Choose high viscosity grades when stronger floc formation, better sludge conditioning or more difficult wastewater conditions are involved.
For sludge dewatering, jar test or on-site trial is recommended to confirm the most suitable grade and dosage.
Why Choose BLUWAT PolyDADMAC
BLUWAT Chemicals is a professional manufacturer of water treatment chemicals with more than 25 years of manufacturing experience. We supply coagulants and flocculants for municipal water, industrial wastewater, textile effluent, paper mill wastewater, mining water and sludge treatment applications.
Our product range includes PolyDADMAC, Polyamine, Polyaluminium Chloride, Polyacrylamide, Water Decoloring Agent, Aluminum Chlorohydrate and other water treatment chemicals.
BLUWAT PolyDMDAAC / PolyDADMAC offers stable quality, flexible grade selection, factory direct supply and technical support for global customers.
Packaging
BLUWAT Liquid PolyDADMAC is available in 25L plastic drum, 200L plastic drum and 1000L IBC drum.
Packaging can be selected according to order quantity, storage condition and dosing system requirements.
Storage
Store the product in its original sealed container in a cool and dry place. Keep away from heat, flame and direct sunlight.
Please refer to the product label, Technical Data Sheet and MSDS for detailed handling, storage and shelf life information.
Frequently Asked Questions
What is PolyDMDAAC?
PolyDMDAAC is another name for PolyDADMAC, also known as PDADMAC. Its chemical name is Poly dimethyl diallyl ammonium chloride. It is a high charge density cationic polymer used for water and wastewater treatment.
What is PolyDADMAC used for?
PolyDADMAC is used for effluent treatment, sludge dewatering, turbidity reduction, color removal support, suspended solids removal and wastewater clarification.
Can PolyDADMAC be used for sludge dewatering?
Yes. PolyDADMAC can be used for sludge conditioning and dewatering support. It helps improve floc formation and supports better solid-liquid separation.
Can PolyDADMAC be used with PAC?
Yes. PolyDADMAC can be used alone or together with PAC. The combination can improve coagulation performance and floc stability in many wastewater treatment systems.
What is the recommended dilution concentration?
When used alone, PolyDADMAC is usually diluted to 0.5% to 5% concentration based on solid content before dosing.
How do I choose the correct grade?
The correct grade depends on wastewater type, sludge condition, suspended solids concentration, treatment target and dosing system. Jar testing is recommended for accurate product selection.
Request a Sample or Technical Support
Looking for a PolyDMDAAC / PolyDADMAC polymer for effluent treatment and sludge dewatering?
Contact BLUWAT with your wastewater type, sludge condition, current treatment process and target result. Our technical team can help recommend a suitable grade and provide jar test guidance for dosage optimization.