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Garment Washing Wastewater Challenges

  • Indigo and sulphur dye bleeding from denim finishing.
  • Pumice, sand, and enzyme residues from stone/bio-washing.
  • Potassium permanganate and hypochlorite from bleaching.
  • Silicone softeners and resins from finishing.
  • High suspended solids and gritty abrasives.
  • Large volumes: 20–100 L per garment.

Treatment Technologies

Grit & Solids Screening

Sand traps and rotary screens for pumice and fibre removal.

Coagulation / DAF

Rapid colour and solids removal from wash-water.

Biological Treatment

MBBR for enzyme and organic degradation.

Advanced Oxidation

Ozonation for residual indigo and bleach by-products.

Filtration & Adsorption

Multimedia + GAC for polishing and odour control.

Water Reuse

Tertiary treatment enabling wash-water recycle.

Our Garment Wash Solutions

Laundry-Scale Plants

50–1,000 m³/day systems sized for garment laundries.

Abrasion-Resistant Design

Heavy-duty pumps and screens for grit and pumice.

Rapid Colour Removal

<30 min HRT in chemical stages for fast throughput.

Water Conservation

Reuse loops cutting freshwater demand 50–70%.

Compliance & Results

>95%

colour removal

>90%

TSS reduction

50–70%

freshwater cut

<30 min

HRT chemical stage

Garment Washing & Dyeing Wastewater

Treatment Challenge

Garment washing, denim finishing, and piece dyeing generate wastewater with high suspended solids, pumice dust, elevated BOD, and colour from indigo and reactive dyes. Stone washing and enzyme treatments add specific organic compounds to the effluent.

High BOD and COD loads requiring biological treatment
Colour removal to meet discharge consent limits
Variable flow and batch processing operations
Water reuse potential for sustainability targets

Our Solution

Our garment wastewater systems feature screening for pumice and fibre removal, equalization for flow balancing, and biological treatment with optional chemical enhancement. Denim-specific systems include targeted colour removal processes for indigo dye destruction.

Integrated treatment train design
Process-specific chemical optimisation
Automated control with SCADA integration
Compliance with BAT and ZDHC standards

Treatment Process Overview

1

Pre-Treatment

Screening, grit removal, and equalization to protect downstream equipment and balance flows.

2

Chemical Treatment

Coagulation, flocculation, and pH adjustment for solids and colour removal.

3

Biological Treatment

Activated sludge, MBBR, or SBR for BOD and nutrient removal.

4

Polishing & Reuse

Filtration, activated carbon, and optional RO for water recovery.

Related Pages

Advanced Oxidation

Advanced oxidation processes for recalcitrant industrial organics.

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Aop Fenton

Fenton's oxidation for recalcitrant COD, dyes, and toxic organics.

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Aop Ozonation

Ozonation and O3/UV advanced oxidation for Colour removal, odour control, and micropollutant destruction in industrial wastewater.

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Textile Carpet

Textile wastewater treatment for carpet & rug mills.

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Textile Chemical Treatment

Textile wastewater treatment for chemical conditioning and treatment.

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Textile Colour Removal

Textile wastewater treatment for Colour removal.

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Need help with garment washing?

Our experts can design a system tailored to your specific requirements.

Industries We Serve

Our expertise spans multiple industries with sector-specific water treatment solutions.