Use of PolyDADMAC for Effluent Treatment in Textile, Paper and Chemical Industries

Use of PolyDADMAC for Effluent Treatment in Textile, Paper and Chemical Industries

BLUWAT PolyDADMAC is a high charge density cationic polymer used for effluent treatment in textile, paper and chemical industries. It is designed to improve wastewater clarification, turbidity reduction, suspended solids removal, color removal support and sludge dewatering performance.

Industrial effluent from textile dyeing, paper production and chemical processing often contains fine suspended solids, colloids, organic matter, color-causing substances and difficult-to-settle particles. These contaminants can remain stable in water and make treatment more difficult.

PolyDADMAC helps solve this problem through strong cationic charge neutralization. It destabilizes negatively charged particles and colloids, helping them form larger flocs that can be removed by sedimentation, dissolved air flotation, filtration or sludge dewatering equipment.

Product Overview

BLUWAT BLU DA Series PolyDADMAC is a liquid cationic polymer with 20% to 50% solid content. It appears as a colorless to light yellow liquid and is available in different viscosity and molecular weight grades for different wastewater treatment requirements.

The product is water soluble, easy to dilute and convenient for dosing by chemical dosing pumps. It can be used alone as an organic coagulant or used together with inorganic coagulants such as Polyaluminium Chloride to improve coagulation and flocculation performance.

For textile, paper and chemical wastewater treatment plants, PolyDADMAC can help improve clarification stability, reduce turbidity, support color removal and improve sludge handling.

Key Benefits

Technical Information

Application in Textile Effluent Treatment

Textile wastewater is one of the most common applications for PolyDADMAC. Dyeing and printing effluent may contain dyes, surfactants, auxiliaries, suspended solids and organic pollutants.

These components can make wastewater highly colored, cloudy and difficult to treat. PolyDADMAC helps improve coagulation by neutralizing negatively charged dye particles, colloids and suspended impurities.

In textile wastewater treatment, PolyDADMAC can be used for:

For high-color textile wastewater, PolyDADMAC is often used together with a decolorizing agent, PAC and PAM. The best treatment sequence should be confirmed by jar test.

Application in Paper Mill Wastewater Treatment

Paper and pulp wastewater often contains fibers, fillers, fine particles, organic color and suspended solids. These contaminants may cause high turbidity, unstable clarification and large sludge volume.

PolyDADMAC helps neutralize the charge of fine fibers and colloidal particles, improving floc formation and solid-liquid separation.

In paper mill wastewater treatment, PolyDADMAC can help with:

It can also help improve the overall stability of paper wastewater treatment systems, especially when influent quality changes frequently.

Application in Chemical Industry Wastewater Treatment

Chemical industry effluent can be complex. It may contain emulsified impurities, colloids, organic residues, fine solids and process chemicals. These wastewater streams often require careful jar testing and optimized chemical dosing.

PolyDADMAC can be used as a cationic coagulant to improve charge neutralization and floc formation.

In chemical wastewater treatment, PolyDADMAC can support:

For complex chemical wastewater, PolyDADMAC may be used with PAC, PAM, pH adjustment chemicals or special treatment agents according to the wastewater composition.

Typical Treatment Process for Textile Wastewater

Typical Treatment Process for Paper Wastewater

Typical Treatment Process for Chemical Wastewater

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 type, pH value, color intensity, turbidity, suspended solids level and treatment target. Jar testing is recommended before full-scale use.

The dosing point and mixing speed should be carefully controlled. The chemical should be mixed evenly with wastewater, but excessive mixing should be avoided after flocs are formed because strong shear may break the flocs.

Product Selection Guide

For low turbidity wastewater, lower or medium viscosity PolyDADMAC grades may be suitable.

For wastewater with higher suspended solids or more difficult colloids, medium to high viscosity grades can be considered.

For sludge dewatering or wastewater requiring stronger floc formation, higher viscosity grades may provide better performance.

For textile dyeing wastewater, the correct product grade and treatment sequence should be confirmed by jar test because different dyes and auxiliaries can respond differently.

For paper mill wastewater, product selection should consider fiber content, filler type, turbidity, pH and sludge dewatering requirements.

For chemical wastewater, product selection should be based on actual wastewater composition and compatibility testing.

Available Liquid PolyDADMAC Grades

BLUWAT supplies liquid PolyDADMAC in different solid content and viscosity grades.

20% solid content series includes DA 201, DA 202, DA 203, DA 204 and DA 205.

40% solid content series includes DA 401, DA 402, DA 403, DA 404, DA 405, DA 406, DA 407 and DA 408.

45% solid content grade includes DA 451.

50% solid content series includes DA 501, DA 502, DA 503, DA 504, DA 505, DA 506 and DA 507.

Different grades are available from low viscosity to very high viscosity. This allows customers to select a suitable grade according to wastewater type, dosing system, floc requirement and treatment target.

Packaging

BLUWAT Liquid PolyDADMAC is available in:

Packaging can be selected according to order quantity, storage condition and dosing system requirements.

Storage

Store the product in original sealed containers in a cool and dry place. Keep away from heat, flame and direct sunlight.

Please refer to the product label, TDS and MSDS for detailed handling, storage and shelf life information.

Frequently Asked Questions