Decoloring Agent
Remove Color, Meet Discharge Standards
Decolorizing agents help remove dyes and pigments from industrial wastewater. Whether you treat textile, dyeing, printing, paper, or chemical effluent, we have the right solution to make your water clear and compliant.
Flocculation Decolorizers
Purity: ≥50%
Feature: Cationic polymer specifically designed to neutralize and precipitate anionic dye molecules
Product Name: Poly Dimethyl Diallyl Ammonium Chloride
Purity: 50%
Feature: high charge density
CAS No.:42751-79-1
Purity: 49%-51%
Feature: effective Clarification & Decolorization. A high-performance coagulant
Oxidation Decolorizers
Purity:10%, 12%, and 13%
Feature: Strong oxidizer, fast action. Pre-treatment of high-concentration dye baths
CAS No.: 7722-84-1
Purity: 27.5%-70%
Feature: For polishing after biological treatment
CAS No.: 7722-64-7
Purity: ≥99.4%
Feature: Very strong oxidant for stubborn colors
Adsorption Decolorizers
CAS No.: 7440-44-0,64365-11-3
Feature: High surface area, removes both color and organic contaminants.
CAS No.: 70131-50-9
Feature: Natural adsorbent, low cost. For mineral oils, edible oil refining
What is Decolorizing Agent?
Decolorizing agents are specialized chemicals used to remove or reduce color from solutions and materials.
They work by adsorbing colored compounds, chemically reacting with pigments, or promoting coagulation of color-causing particles.
These agents are essential in industries where color removal is critical — from wastewater treatment to food processing and chemical manufacturing.
How Decolorizing Agents Work
Adsorption: Porous materials like activated carbon trap colored molecules on their surfaces
Chemical Reaction: Agents react with colorants to form colorless compounds
Coagulation/Flocculation: Chemicals clump colored particles together for easy removal
Ion Exchange: Resins swap ions with colored compounds to eliminate them from solution
Applications of Decolorizing Agent
Textile Industry Wastewater: Removes color from dyeing and printing effluents containing reactive, acid, and disperse dyes — helping mills meet discharge standards .
Industrial Wastewater Treatment: Treats high-color wastewater from dyestuff, pigment, ink, and papermaking industries .
Food & Beverage Processing: Purifies edible oils, fruit juices, and sugar syrups by removing unwanted pigments and color impurities .
Chemical & Pharmaceutical Manufacturing: Clarifies process streams and removes color from pharmaceutical intermediates and fine chemicals .
Municipal Water Treatment: Reduces color and organic contaminants in drinking water and sewage treatment plants .
How to Choose the Right Decolorizing Agent
For reactive, acid, or disperse dyes (textile wastewater): Choose Dicyandiamide Formaldehyde Resin. It is specially designed for soluble dyes.
For wastewater with high suspended solids + color: Choose PolyDADMAC. It removes color and solids together.
For very strong, resistant colors (e.g., sulfur or vat dyes): Pre-treat with Sodium Hypochlorite or Hydrogen Peroxide, then follow with a flocculation decolorizer.
For final polishing before discharge or reuse: Use Activated Carbon to ensure crystal clear water.
For edible oil or sugar refining: Use Activated Clay or Activated Carbon.
Tip: Always perform a jar test to determine the best product and dosage for your specific wastewater.
FAQ of Decolorizing Agent
In many cases, yes. PolyDADMAC’s high charge density provides both color removal and coagulation, potentially reducing or eliminating the need for separate coagulants like alum or PAC.
When color and COD are high, use with inorganic flocculants like PAC for better results and lower costs. Always add decolorizer first, then PAC, and finally PAM — never mix them together before adding.
Yes, we are a direct manufacturer with our own production facilities and strict quality control for both Dicyandiamide Formaldehyde Resin and PolyDADMAC.
Yes, our technical team is available to answer questions about dosing, storage, handling, and optimization for your specific application.
Decoloring Agent Suppliers - HOOCHEMTEC
We are a specialized manufacturer and exporter of decorlouring agent, serving textile and industrial wastewater treatment customers worldwide.
Our Advantages:
Direct Manufacturer: Full control over quality and supply
SGS-Certified: Our manufacturing meets rigorous international standards
Fast Shipping: Most orders ship within 7 days to China port
Technical Support: Expert guidance for product selection and application
Free Samples: Request samples for pre-order testing on your wastewater
Satisfaction Guaranteed: Clear return and exchange policy if products don’t meet expectations
Our water treatment chemicals include flocculants, scale inhibitors and dispersants, corrosion inhibitors, Bactericidal Algicide, sewage decolorizing agents etc.
- The fastest can be shipped within seven days to the port of China
- If you are not satisfied with the product and service, you can return it
- Our company has passed SGS field certification inspection
