Wuxi BS Water Treatment Chemicals Co., Ltd.

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Water decoloring agent (1).JPG

High Efficient Water Decolorizing Agent (WDA) - Cationic Polymer from China Suppliers & Factory for Wastewater Treatment

  • Product Name Water decoloring agent
  • CAS No. 55295-98-2
  • Molecular Formula Composite polymer
  • HS Code 38099100
  • Appearance Colorless transparent liquid

Product Form

This cationic polymer, manufactured by leading suppliers in China, is specifically formulated for the effective treatment of colored wastewater. It serves multiple functions, including decolorization, flocculation, sedimentation, and COD reduction, making it an essential integrated water treatment agent. Our factory employs advanced technology to ensure high-quality performance, catering to various industrial needs for efficient wastewater management
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Product Details

Core Features

• Multi-mechanism synergy: Integrating adsorption bridging, flocculation (cationic polymer bridging), and oxidation (trace oxidant decomposing pigments) into one, it achieves a decolorization rate of ≥95% (COD removal rate ≥40%) for refractory pigments such as reactive dyes (e.g., reactive red, reactive blue), direct dyes (e.g., direct yellow, direct black), and sulfur dyes.

Water decoloring agent (2)
Water decoloring agent (3)

• Broad pH Adaptability: Stable effectiveness at pH 3–11 (optimal pH 6–9), resistant to high salt (salinity ≤5%), and high temperature (no performance degradation below 60°C), suitable for over 90% of industrial wastewater scenarios such as printing and dyeing (high chroma), papermaking (black liquor), electroplating (chromium/copper-containing wastewater), chemical industry (phenol/aniline-containing wastewater), etc.


• Quick Results: Large flocs form within 3 minutes after dosing, with a fast settling speed.

Technical Specifications
Parameter Index
Appearance Colorless transparent liquid
pH (10g/L aqueous solution) 3 ～ 5
Ionicity Cationic
Solid Content >50%
Viscosity (20°C) 50 – 250 mPa·s
Relative Density (25°C) 1.2 – 1.3
Application Area
  • 1
    Wastewater Treatment in the Dye Industry: Primarily addressing the decolorization needs of colored wastewater from dye production enterprises, it can be adapted to various types of dye wastewater, including reactive dyes, acid dyes, disperse dyes, etc.; especially in the treatment of disperse dye wastewater, its decolorization performance is more prominent.
  • 2
    Textile Dyeing and Related Industrial Wastewater: Suitable for purifying mixed wastewater generated during textile dyeing and processing, and can also be extended to industrial wastewater treatment scenarios in areas such as pigment preparation, ink production, and the paper industry.
  • 3
    Auxiliary Treatment of High-Suspended Solids Wastewater: For wastewater systems with relatively high suspended solids content, this product can achieve significant sedimentation through flocculation, thereby assisting in reducing the content of solid impurities in the wastewater.
Application (3)
Application (1)
Application (5)
Application (2)
Packaging and Storage

• Liquid Type: 200L Plastic Drum / 1000L IBC Tote

• Storage Conditions: Keep in a cool and well-ventilated place, away from direct sunlight.

200L barrel
Container liquid bag shipment
Frequently Asked Questions
Q What types of dyes can the water decoloring agent effectively treat?
The water decoloring agent is effective against a wide range of dye types, including reactive dyes (e.g., reactive red, reactive blue), direct dyes (e.g., direct yellow, direct black), sulfur dyes, acid dyes, and disperse dyes. It is particularly effective in treating disperse dye wastewater, achieving a decolorization rate of ≥95%.
Q What is the recommended pH range for using this decoloring agent?
The product maintains stable effectiveness across a broad pH range of 3–11, with an optimal performance window of pH 6–9. This wide adaptability makes it suitable for over 90% of industrial wastewater treatment scenarios without requiring significant pH pre-adjustment.
Q How quickly does the water decoloring agent work after dosing?
The decoloring agent acts rapidly. Large flocs typically form within 3 minutes after dosing, and the settling speed is fast. This quick reaction time makes it highly practical for continuous industrial wastewater treatment processes.
Q Is this product suitable for high-salinity or high-temperature wastewater?
Yes. The water decoloring agent is formulated to be resistant to high-salt environments (salinity ≤5%) and high temperatures (no performance degradation below 60°C). This makes it highly versatile for demanding industrial conditions such as printing and dyeing, electroplating, and chemical processing wastewater.
Q What packaging options are available and how should the product be stored?
The liquid-type decoloring agent is available in 200L plastic drums and 1000L IBC totes for bulk usage. It should be stored in a cool, well-ventilated area away from direct sunlight to maintain its performance and shelf life.
Q Can this decoloring agent also reduce COD levels in wastewater?
Yes. In addition to achieving a decolorization rate of ≥95%, the product also delivers a COD removal rate of ≥40%. Its multi-mechanism approach — combining adsorption bridging, cationic polymer flocculation, and trace oxidant decomposition — contributes to overall improvement in wastewater quality beyond just color removal.