Industrial Wastewater Treatment — DoE-Certified & Export-Ready
Clearion designs, supplies, and installs Effluent Treatment Plants that meet Bangladesh DoE discharge standards and satisfy EU buyer environmental audits — engineered specifically for your facility's flow rates and inlet characteristics.
At a Glance
Multi-stage treatment process
Every Clearion ETP moves wastewater through a series of engineered stages, each removing a specific category of contaminant before the final discharge meets DoE parameters.
Bar screens remove large solids. An equalisation tank buffers flow variations so downstream units receive a consistent load — essential for stable downstream treatment performance.
Which industries require an ETP?
Under Bangladesh's Environment Conservation Rules (ECR 1997) and subsequent DoE notifications, all factories generating industrial effluent must treat wastewater before discharge. Non-compliance carries factory closure orders and affects export certification.
Textile & Garments
Dyeing, washing, and finishing lines — colour, BOD, COD, and pH treatment essential for ZDHC compliance.
Leather & Tannery
Heavy metal (chromium), sulphide, and high-strength organic removal for Hazaribagh relocation compliance.
Pharmaceutical
API manufacturing effluent — solvent, active compound, and biological load treatment for DoE and WHO-GMP audits.
Food & Beverage
High BOD/COD from processing lines — biological treatment with grease traps and nutrient removal.
Paper & Pulp
Fibre, colour, and BOD load removal from paper mill effluent.
Chemical Industry
Mixed organic and inorganic contaminant streams requiring custom chemical treatment stages.
Design parameters
| Parameter | Typical Range |
|---|---|
| Treatment Capacity | 50 – 5,000 m³/day |
| Inlet BOD | 200 – 3,000 mg/L |
| Outlet BOD | ≤ 50 mg/L (DoE limit) |
| Inlet COD | 500 – 8,000 mg/L |
| Outlet COD | ≤ 200 mg/L (DoE limit) |
| Inlet TSS | 200 – 2,000 mg/L |
| Outlet TSS | ≤ 100 mg/L (DoE limit) |
| pH (treated) | 6.0 – 9.0 |
| Colour removal | Up to 98% |
| Hydraulic retention | 12 – 36 hours (site-specific) |
All parameters subject to site-specific design. Clearion engineers each system from a full inlet characterisation study.
Engineering certainty, not just equipment
Ready to resolve your compliance risk?
Tell us about your facility, discharge requirements, and timeline. Our engineers will review your situation and provide a detailed proposal — at no cost and with no obligation.