Last Updated: August 2026 | Reading Time: 10 minutes
Market Overview
Bangladesh is the world’s second-largest garment exporter, with major textile clusters in Dhaka, Chittagong, and Gazipur. Dyeing and washing operations generate high-COD, high-color wastewater requiring chemical treatment for ETP compliance.
Key Wastewater Challenges
| Parameter | Typical | Discharge Limit |
|---|---|---|
| COD | 500-5,000 mg/L | < 300 mg/L |
| TSS | 200-2,000 mg/L | < 50 mg/L |
| pH | 4-10 | 6-9 |
Recommended Treatment Chemicals
| Chemical | Role | Dosage | Removal |
|---|---|---|---|
| PAC | Coagulant | 50-300 mg/L | 30-55% COD |
| CPAM | Flocculant | 0.5-5 mg/L | TSS 90%+ |
| Activated Carbon | Adsorbent | 50-500 mg/L | Color 80%+ |
Treatment Process Flow
- Equalization & pH adjustment
- Coagulation (PAC + PAM)
- Sedimentation/DAF
- Biological treatment
- Polishing & disinfection
- Sludge dewatering
Regulatory Compliance
Bangladesh: DoE ECR 1997, COD < 200 mg/L, TSS < 150 mg/L, pH 6-9
Why Source from HydroChemix
- Factory-direct pricing with 30+ country export experience
- ISO 9001 quality with COA for every batch
- Free samples for jar testing
- 24-hour quote response
- Technical support and dosage optimization