Effluent Treatment
Industrial wastewater treated. Compliance guaranteed.
The Challenge
Industrial effluent is your most complex compliance liability.
Manufacturing, processing, and chemical industries generate high-strength wastewater with BOD, COD, heavy metals, and suspended solids far beyond municipal standards. Without a correctly sized ETP, you face show-cause notices, production shutdowns, and criminal liability under the Water Act, 1974. NWPL designs ETPs that handle your worst-case inlet load — not just your average.
of CPCB show-cause notices issued to industries without functional ETPs (2024)
How It Works
Three stages. One compliant outlet.
Our ETPs follow a primary-secondary-tertiary sequence, each stage engineered to your specific waste stream. No generic skids — every system is process-designed.
Primary Treatment
Screening removes gross solids. Equalisation tanks buffer flow and load variations. Chemical coagulation-flocculation and primary clarifiers remove 60–80% of suspended solids and 30–40% of BOD before biological treatment.
Secondary (Biological) Treatment
Extended aeration, SBR, or MBBR processes remove dissolved organics through microbial action. We select the biological process based on your industry — textile ETPs use different organisms than food-processing ETPs.
Tertiary Polishing
Sand filtration, activated carbon, or advanced oxidation (AOP) brings the treated effluent to CPCB norms (BOD ≤30 mg/L, COD ≤250 mg/L). Treated water can be reused in cooling towers or landscaping, reducing freshwater costs.
Technical Specifications
Built for precision.
| Parameter | Value / Range |
|---|---|
| Capacity range | 5 KLD – 5 MLD |
| Inlet BOD | up to 5,000mg/L |
| Outlet BOD | ≤ 30mg/L |
| Outlet COD | ≤ 250mg/L |
| TSS outlet | ≤ 100mg/L |
| HRT (SBR) | 12 – 24hours |
| Sludge management | Filter press dewatering to 20–30% DS |
| Power consumption | 0.4 – 1.2kWh/m³ |
Case Study
Proven in the field.
Pharmaceutical ETP — 250 KLD, Pune, Maharashtra
Outlet COD consistently ≤200 mg/L against MPCB consent of 250. Sludge volume reduced 40% versus client's previous system. Annual chemical cost savings: ₹28 lakh through process optimisation. Full MPCB audit clearance in first year.
View all projectsCompliance Context
Meeting both Central and State PCB discharge norms.
CPCB sets baseline standards under the Water Act, 1974, but State PCBs frequently apply stricter conditions. NWPL's ETPs are designed to the tighter of the two, providing compliance headroom for regulatory changes. We also provide compliance documentation — the annual environmental statement and test reports your EHS team needs.
Water (Prevention & Control of Pollution) Act, 1974
Environment (Protection) Rules, 1986 — Schedule VI
CPCB General Standards for Discharge (BOD ≤30, COD ≤250 mg/L)
State PCB consent conditions (industry-specific)
MPCB / GPCB / TNPCB consent compliance frameworks
What could you save?
Calculate your NPV, IRR & payback period
Frequently Asked
Common questions answered.
Related Industries
Designed for your sector.
Request a Technical Audit for Effluent Treatment.
Tell us your capacity, inlet profile, and compliance targets. We'll size a system that fits.