Dyeing Wastewater Decoloring Chemicals PolyDCD
Cationic Copolymer Decoloring Agent
Description:
The water decolorant composed of dicyandiamide-formaldehyde resin can effectively remove color from dye-containing wastewater through a dual mechanism. As a quaternary ammonium cationic copolymer, it releases abundant cations that neutralize the negative charges on dye molecules, thereby destroying the stability of their colloidal structure. Meanwhile, its hydrolysis produces large flocculent substances (such as the CW-08 formula), which can adsorb and encapsulate the destabilized dye particles. This integrated process of charge neutralization and flocculation enables the effective separation of dyes from water. The decolorant exhibits outstanding performance in decolorization, floc formation, and chemical oxygen demand (COD) reduction. Therefore, it is particularly suitable for treating complex industrial dye wastewater.
Application:
1.Primary Function
Specialized in high-efficiency decolorization of industrial effluents, particularly for:
Reactive, acidic, and disperse dyes (common in dye manufacturing)
Wastewater from textile dyeing, pigment production, printing ink, and paper manufacturing
2.Secondary Application
Acts as a retention agent in paper/pulp production, enhancing process efficiency.
Instructions for use:
1. Dilution Requirement
Dilute the product with water at a 1:10 to 1:40 (product:water) ratio before use.
Stir thoroughly for several minutes, then clarify via sedimentation or air flotation.
2. Optimal pH Range
Maintain wastewater pH between 6 and 10 for best results.
3. High-Strength Wastewater Treatment
For highly colored or high-COD effluents, combine with inorganic flocculants to improve efficiency and reduce costs.
Determine dosage and application sequence based on flocculation tests and process conditions.
4. Low-Temperature Handling
May experience layer separation or whitening in cold conditions—remix well before use; performance remains unaffected.
Specifications:
| Product Code | 01 | 03 | 07 |
| Appearance | Colorless or light-color sticky liquid | Light yellow or yellow sticky liquid | Colorless or light-color sticky liquid |
| Solid Content | ≥50.0 |
| Viscosity (mpa.s 20℃) | 30-1000 | 5-500 | 30-1000 |
| PH (30% water solution) | 2.0-5.0 |
Concentration and viscosity of solution can be customized according to customers’ needs.
Water Decolorant Performance Highlights:
High-Efficiency Decolorization: Removes 85–95% of dyes from solution.
COD Reduction: Lowers Chemical Oxygen Demand (COD) by ~60%.
Enhanced Process Efficiency: Promotes faster sedimentation and improved flocculation.
Eco-Friendly Composition: Contains no aluminum, chlorine, or heavy metal ions, ensuring environmental safety.
Success Cases:
Decolorization of dyeing waste water
1. Samples of Printing and Dyeing Wastewater Sent by the Customer:
the wastewater samples were deeply colored and turbid.
2. Customer Requirements: the customer requested decolorization of the wastewater.
3. Experimental Procedures
a. Add a decolorizing agent.
b. Add PAC (Polyaluminium Chloride).
c. Add PAM (Polyacrylamide).
4. Comparison of Experimental Results
After using our company's decolorizing agent, significant decolorization effects were observed in the wastewater from both the drainage outlet and the secondary sedimentation tank. Flocs formed and settled, resulting in clear water quality. The customer was very satisfied with the results.
Package and Storage:
Safety Profile
Non-toxic, non-flammable, and non-explosive. Store away from direct sunlight.
Packaging Options
Available in
Plastic drums (30 kg / 50 kg / 250 kg)
IBC tanks (1000 kg / 1250 kg)
Custom packaging upon request
Storage Guidelines
Slight layering may occur over time but does not affect performance. Mix well before use.
Recommended storage temperature: 5–30°C.
Our services:
With over 12 years of manufacturing expertise and engineers boasting 20+ years of industry experience, we are committed to delivering high-quality products, comprehensive after-sales support, and on-site testing services.
Our solutions including:
Customized water treatment chemicals tailored to your needs.
Expert technical guidance to optimize performance and efficiency.
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