Refurbishment

STP Refurbishment & Modernization Services – Restore, Upgrade & Future-Proof Your Sewage Treatment Plant

Aging Sewage Treatment Plants (STPs) are a serious challenge for residential communities and commercial properties. Over time, mechanical wear, biological imbalance, deteriorated diffusers, aged blowers, inefficient pumps, and outdated aeration systems can cause performance decline, foul smell, excess running cost, and non-compliance with CPCB standards. Our STP Refurbishment Services are designed to completely restore underperforming STPs—mechanically, electrically, biologically, and structurally. We help apartments, gated communities, IT parks, commercial buildings and institutions upgrade their STPs to modern standards for long-term reliability.

Why STP Refurbishment is Necessary

Refurbishment goes beyond repairing individual components. It is a systematic modernization process that improves:

Mechanical Efficiency

Old blowers, pumps, diffusers, and media gradually lose efficiency, leading to high energy bills and poor aeration.


Electrical Reliability

Ageing MCC panels, loose wiring, and worn-out starters lead to frequent tripping and shutdowns.


Biological Performance

Unbalanced MLSS, poor microbial activity, sludge overflow, and low DO all signal the need for biological stabilization.


Structural Safety

Leakages, cracks, or corroded tank surfaces can cause contamination and system failure.


A professionally refurbished STP:

  • Reduces energy cost by up to 20–40%
  • Prevents odour and resident complaints
  • Ensures stable treated water quality
  • Minimizes operator dependency
  • Extends plant life by several years
  • Meets all CPCB compliance norms

What Our STP Refurbishment Covers

1. Mechanical Revamp

  • Replacement of blowers
  • New aeration grids & diffusers
  • Pump replacements
  • Media replacement (MBBR, tube settlers)
  • Clarifier mechanism upgrade
  • Sludge system optimization

2. Electrical Upgrade

  • New MCC panel or rewiring
  • Motor protection systems
  • Overload / relay correction
  • DO/pH sensor installation
  • Auto-control & energy-saving logic

3. Biological Restoration

  • MLSS correction & seeding
  • DO stabilization
  • Sludge age optimization
  • F/M ratio balancing
  • Microbial health improvement

4. Structural Safety

  • Repair of cracks, joints, suction lines
  • Re-lining tanks for durability
  • Internal wall resurfacing
  • Pipeline replacement

5. Process Optimization

  • Airflow redesign
  • Conversion to energy-efficient technologies
  • Reduced chemical dependence
  • Sustainable and stable treatment cycles

Our Refurbishment Process Explained

  • Detailed Site Audit (Free) We inspect the entire STP including aeration, sludge, mechanical components, electrical systems, and civil structure.
  • Gap Analysis & Proposal You receive a complete report including current inefficiencies, required replacements, estimated lifespan, energy savings potential, and compliance risks.
  • Refurbishment Execution Certified engineers implement upgrades with minimal downtime.
  • Technology Upgradation Installation of new blowers, diffusers, aeration grids, media and efficient electrical systems.
  • Biological Re-Commissioning We rebalance biological processes to ensure stable, sustainable treatment.
  • Compliance Testing & Handover Final treated water quality meets CPCB norms.

Integrating AquaSTP After Refurbishment

Once the STP is modernized, AquaSTP keeps it consistent and transparent:

  • Auto-tracked daily logs
  • Digital operator attendance
  • Scheduled maintenance reminders
  • Alerts for equipment failures
  • Monthly compliance summaries
  • Mobile app for operators
  • Dashboard for RWAs & FMs

This ensures the refurbished plant stays healthy long-term.

Who Benefits From Refurbishment?

Apartment complexes with aging STPs
Non-compliant STPs receiving PCB notices
STPs with foul smell and complaints
Plants requiring modernization
Buildings aiming for sustainable operations
Projects with high maintenance cost

Service Locations

Bangalore Chennai Hyderabad Pune Mumbai Delhi NCR Coimbatore Mysore

Book a Free Refurbishment Audit

Our engineers will assess your STP and prepare a full modernization plan.