CETP: 40 MLD 2-Stage Bio Treatment

Bio-Tower + Advanced Oxidation Ditch for Industrial Effluent Excellence
Location

Saykha, Bharuch, Gujarat, India

Procedure

2-Stage Biological Treatment (Bio-Tower + Advanced Oxidation Ditch)

Contract Type

EPC Turnkey

Capacity

40 MLD (Common Effluent Treatment)

Saykha CETP: 40 MLD 2-Stage Biological Treatment for Sustainable Effluent Management

Completed in 2019 for Gujarat Industrial Development Corporation (GIDC), this 40 MLD Common Effluent Treatment Plant (CETP) at Saykha Industrial Estate treats mixed industrial wastewater from chemical and other units in the Bharuch region.

The advanced 2-stage biological system features a Bio-Tower for high-rate initial organic reduction followed by an Advanced Oxidation Ditch for extended aeration, nutrient removal, and final stabilization. Integrated with evaporation (0.5 MLD) for concentrate handling, it ensures compliant discharge, supports Saykha’s industrial expansion, and exemplifies efficient CETP design in Gujarat’s PCPIR ecosystem.

Robust Treatment for Mixed Industrial Effluents

Core goals:

  • Process 40 MLD of variable, high-strength effluents to meet GPCB discharge standards.
  • Implement 2-stage bio treatment (Bio-Tower + Advanced Oxidation Ditch) for superior BOD/COD/nutrient removal.
  • Handle diverse industrial loads in Saykha estate with stability and efficiency.
  • Incorporate evaporation for enhanced resource recovery and minimal impact.
  • Facilitate sustainable growth in Bharuch’s industrial corridor.

Tackling High-Variability Effluents in Large-Scale CETP

Key challenges:

  • Managing fluctuating influent quality/quantity from multiple industries.
  • Achieving high removal rates in 2-stage bio system under toxic/organic stress.
  • Optimizing Bio-Tower for rapid pre-treatment and Oxidation Ditch for polishing.
  • Integrating evaporation (0.5 MLD) for concentrate without added complexity.
  • Meeting timelines/compliance post-2019 EC in active estate.

2-Stage Bio-Tower + Advanced Oxidation Ditch System

Core process: First-stage Bio-Tower for high-rate attached-growth BOD/COD reduction; second-stage Advanced Oxidation Ditch (extended aeration) for suspended-growth polishing, nitrification/denitrification, and stable effluent.

Highlights:

  • Bio-Tower media for enhanced biomass retention and shock-load resistance.
  • Advanced Oxidation Ditch with high-efficiency aeration for complete stabilization.
  • Clarification/recycle loops + evaporation for concentrate management.
  • Automated DO/pH/flow controls for optimized performance.

This dual-stage approach delivers resilient, high-removal treatment for complex industrial mixes.

Assessment & Planning

Influent sampling, load analysis, and 2-stage bio feasibility for 40 MLD Saykha effluents.

Design & Technology Integration

Engineering of Bio-Tower + Advanced Oxidation Ditch, aeration sizing, and evaporation tie-in.

Construction & Installation

EPC build-out of towers, ditch channels, aerators, clarifiers — phased in estate.

Commissioning & Optimization

Seeding, ramp-up, 2-stage tuning, quality validation, and compliance testing.

Validation, Handover & Monitoring

Full performance checks, GIDC handover, ongoing norm monitoring.
Stage One
Stage Two
Stage Three
Stage Four
Stage Five

Project Partners

Fostering high-impact collaborations to deliver resilient environmental infrastructure and localized engineering excellence.
Gujarat Industrial Development Corporation (GIDC)
Enviro Control Pvt. Ltd.

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