Textile dyeing wastewater is known for its intense color and complex organic compounds. Learn about effective treatment technologies for decolorization and pollution control.

Textile Wastewater Characteristics

• High color: 100-2500 Pt-Co units
• High BOD/COD: 500-5000/2000-20000 mg/L
• Variable pH: 6-11
• Toxic compounds: Dyes, solvents, surfactants

Dye Types and Treatment

Reactive Dyes (most common)

• Poor fixation rate (60-90%)
• Hydrolyzed dye in wastewater
• Challenging to treat biologically

Disperse Dyes

• Insoluble in water
• Physical separation possible
• DAF effective

Color Removal Technologies

Coagulation/Flocculation

• Poly aluminum chloride (PAC)
• Ferric chloride
• Cationic polyelectrolytes
• Color removal: 70-90%

Advanced Oxidation

• Ozone oxidation – excellent for color
• Fenton process (Fe2+/H2O2)
• Photocatalysis (TiO2/UV)

Adsorption

• Activated carbon – most effective
• Biochar from waste biomass
• Fly ash alternatives

Textile wastewater solutions? Contact us for custom treatment systems.

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