Case Study: 90 KLD SBR-Based STP Plant in Gurgaon by Netsol Water

As a trusted Sewage Treatment Plant manufacturer in Gurgaon, Netsol Water was commissioned by Great Lakes Institute of Management - one of India's premier business schools - to design and install a high-capacity, fully automated sewage treatment system at their Gurgaon campus,  making it a benchmark STP Plant in Gurgaon for institutional wastewater reuse.

The project goal was clear: treat 90,000 liters of wastewater every day - generated from student hostels, faculty quarters, the cafeteria, and washrooms - and recycle it into clean, reusable water for flushing and landscaping.

This wasn't just another infrastructure project. It was a step toward sustainable water management, regulatory compliance, and real environmental accountability.

Great Lakes was generating 90 KLD of raw sewage daily with no treatment or reuse system in place - a serious compliance and resource management gap.

Here's the full picture of what the institute was facing:

. 90 KLD of untreated sewage - 90 KLD of untreated sewage flowing daily from hostels, kitchens, washrooms, and common areas

. Direct discharge without treatment - a violation of CPCB and HSPCB (Haryana State Pollution Control Board) norms

. 100% dependence on freshwater for flushing and horticulture, driving up operational costs

. Regulatory risk of fines, notices, or forced shutdown without a compliant system

. No infrastructure for sewage recycling or wastewater reuse anywhere on campus

Educational campuses are among the highest per-capita water consumers. A campus of this scale can easily consume 1.5–2 lakh liters of freshwater daily. Without a water reuse system, every liter of sewage was wasted - and every liter used for flushing or gardens was precious treated freshwater.

The institute needed a proven solution - fast.

Netsol Water engineered and installed a 90 KLD SBR Technology STP Built for Educational Institutes - the most compact, efficient, and automated solution available for institutional wastewater treatment.

After a detailed site assessment, Netsol Water selected SBR (Sequential Batch Reactor) technology was selected for three decisive reasons:

This STP Plant in Gurgaon was custom-designed by Netsol Water, a leading STP Manufacturer in Gurgaon for the variable hydraulic load typical of academic campuses - high daytime usage, low overnight flow - without compromising treatment quality. The entire system was engineered to full HSPCB compliance, removing any regulatory risk for the institute going forward.

The 90 KLD STP uses a proven 7-stage treatment sequence that takes raw sewage and converts it into clean, reusable water - safely and consistently.

1 - Inlet Screening & Collection

Raw sewage from across the campus enters a collection sump fitted with a bar screen that removes rags, plastics, and coarse debris. This protects all downstream equipment.

2 - Oil & Grease Trap

Kitchen and cafeteria wastewater passes through a dedicated oil and grease trap. Removing fats at this stage prevents them from interfering with the biological treatment process.

3 - Equalization Tank

All incoming sewage collects in an equalization tank that smooths out flow fluctuations across the day. This ensures a steady, controlled feed rate into the SBR - which is essential for consistent performance.

4 - SBR Reactor (Core Biological Treatment)

The heart of the system. The Sequential Batch Reactor operates in automated timed cycles:

. Fill - Fill - Equalized wastewater fills the reactor

. React (Aerate) - React (Aerate) - Blowers supply air, activating biomass that digests organic matter (BOD and COD)

. Settle - Settle - Aeration stops; biomass settles to the bottom naturally

. Decant - Decant - Clarified, treated water is drawn off from the top

. Idle - Idle - The cycle resets, ready for the next batch

This batch-mode operation gives precise, repeatable control over effluent quality - something continuous-flow systems struggle to match.

5 - Sludge Handling

Settled biological sludge is pumped to a sludge sump and dewatered using a filter press, producing a dry sludge cake that can be responsibly disposed of or used as a soil amendment.

6 - Tertiary Polishing & Disinfection

Treated water passes through sand filtration (removes residual suspended solids) and an activated carbon filter (removes odour and colour). Final disinfection via UV or chlorination destroys any remaining pathogens, producing water that is clean, odour-free, and safe for reuse.

7 - Treated Water Storage & Distribution

Polished treated water flows into a reuse tank and is pumped across the campus for:

. All toilet and urinal flushing - replacing 100% of the freshwater previously used

. Landscape irrigation and garden maintenance

Watch how this 90 KLD STP Plant in Gurgaon works in real conditions:

After commissioning, the 90 KLD STP installed by Netsol Water at Great Lakes Institute of Management delivered on every performance target - water quality, reuse volumes, and full regulatory compliance.

The campus now recycles 70–75% of all sewage generated back into daily operations - significantly reducing both freshwater dependency and operational expenditure.

This STP plant in Gurgaon goes beyond compliance - it actively reduces the campus's environmental footprint and supports Gurgaon's broader water sustainability goals.

. Groundwater conservation - Groundwater conservation - Recycled STP water replaces borewell water previously used for flushing and gardening

. Zero pollutant discharge - Zero pollutant discharge - No untreated sewage reaches stormwater drains or nearby water bodies

. Energy efficiency - Energy efficiency - SBR's automated aeration is measurably more energy-efficient than conventional continuous-aeration systems

. Green building alignment - Green building alignment - The water reuse system supports green campus certifications and sustainability benchmarks

. Nutrient recovery - Nutrient recovery - Processed sludge cake functions as an organic soil conditioner, returning nutrients to the land

Gurgaon faces accelerating groundwater stress. Every KLD of water reused through sustainable water management systems like this one directly reduces pressure on the city's depleting aquifers.

Working with a specialist Sewage Treatment Plant manufacturer in Gurgaon means faster delivery, local compliance expertise, and reliable long-term support - not just a one-time installation.

1. Deep Regulatory Expertise

A Sewage Treatment Plant manufacturer in Gurgaon knows HSPCB discharge norms, consent-to-operate requirements, and inspection expectations inside out. That knowledge protects your compliance status from day one

2. Faster Installation & Commissioning

Local teams can conduct site surveys faster, mobilise equipment quickly, and coordinate with civil contractors without logistical delays. The Great Lakes STP was commissioned on schedule - despite the scale and complexity of the installation.

3. Responsive AMC & Breakdown Support

Annual Maintenance Contracts (AMC) are most effective when your service provider is nearby. A local STP manufacturer in Gurgaon can respond to breakdowns within hours - not days - minimising plant downtime.

4. Fully Custom-Engineered Systems

No two sites are identical. A dedicated Sewage Treatment Plant manufacturer in Gurgaon tailors every plant to your specific capacity, sewage characteristics, land availability, and reuse objectives - not a packaged, off-the-shelf product.

5. Proven Track Record

From 90 KLD STP plants for educational institutes to large-scale systems for residential townships, hospitals, and industrial facilities - documented project experience matters when you're making a long-term infrastructure investment.

Ans: Yes - when treated to reuse standards (BOD < 10 mg/L, TSS < 10 mg/L, properly disinfected), treated water is approved for toilet flushing, irrigation, and industrial cooling. It is not for drinking.

Q4. Are educational institutes legally required to have an STP in Gurgaon?

Ans: Yes. Under CPCB and HSPCB regulations, any institution generating sewage above the prescribed threshold must operate a certified Sewage Treatment Plant. Non-compliance attracts fines and closure notices.

Q5. How long does a 90 KLD STP installation take?

Ans: From design sign-off to commissioning, a 90 KLD SBR-based STP typically takes 8–14 weeks, depending on civil construction readiness and site-specific conditions.

The Great Lakes Institute of Management project demonstrates exactly what responsible wastewater management looks like: a 90 KLD SBR Technology STP that converts raw sewage into clean, reusable water, saves crores of liters of freshwater annually, and keeps the campus fully compliant with national environmental norms.

As a proven Sewage Treatment Plant manufacturer in Gurgaon, Netsol Water deliver end-to-end solutions - from site assessment and custom design to installation, commissioning, operator training, and long-term AMC support.

Whether you're running a university campus, a residential society, a hospital, or a commercial complex - we engineer systems that perform, comply, and last.

Turn Your Campus Sewage into a Resource, Not a Liability

Contact us today for a FREE site assessment and project consultation.

Ready to build your Water Reuse System? Let's talk.