Hospital Sewage Treatment Plant
Hospitals consume thousands of litres of water every day—from operating theatres and isolation wards to laboratories, laundries and cafeterias.
- Manufactured in Ambattur, Chennai
- Sized to your site and water
- Installation and service support
Why Hospital Wastewater Needs Specialised Treatment
Hospitals consume thousands of litres of water every day—from operating theatres and isolation wards to laboratories, laundries and cafeterias. The resulting effluent carries blood, pharmaceuticals, pathogens, chemical reagents and high organic loads that can contaminate municipal sewers or surface water bodies.Under the Central & State Pollution Control Board (CPCB/SPCB) rules, every healthcare facility above 100 bed capacity must install an STP (or ETP) to meet discharge standards for BOD ≤ 10 mg/L, TSS ≤ 10 mg/L and Faecal Coliform < 100 MPN/100 mL.
Unique Contaminants in Medical Effluent
Pathogenic micro organisms (bacteria, viruses, helminths)
Cytotoxic & antibiotic residues that spur antimicrobial resistance
Radio isotopes from diagnostic imaging
High Biochemical Oxygen Demand (BOD) & Chemical Oxygen Demand (COD)
Heavy metals from sterilisation and lab reagents
Hospital STP Process — from Inflow to Safe Discharge
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Pre Treatment
Bar screens & grit chambers remove wipes, gloves and inorganic grit.
Primary Treatment
Primary clarifier settles suspended solids; floatables are skimmed.
Secondary Treatment (Biological)
MBBR/MBR or SBR removes dissolved organics and nutrients.
Tertiary & Disinfection
Pressure sand, activated carbon, UF/RO membranes and UV/chlorine ensure pathogen kill and final polishing.
Sludge Handling
Sludge is dewatered in filter presses and disposed of as per BMWM Rules.
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Proven STP Technologies for Hospitals
MBBR — Moving Bed Biofilm Reactor
The most popular option for midsized hospitals (100–500 KLD). Bio media carriers increase surface area, delivering high BOD removal (> 90 %) in a compact footprint.
MBR — Membrane Bio Reactor
Produces ultra filtered < 5 NTU permeate suitable for dialysis, HVAC make up water or flushing. Ideal where strict water reuse targets justify higher CAPEX.
SBR — Sequencing Batch Reactor
A single tank, time sequenced process that simplifies civil construction for greenfield hospitals with space constraints.
Why Choose Greenly
Modular skid units from 50 KLD to 1 MLD; easy to expand
PLC based automation reduces operator error & chemical use
Reusable output water that meets IS 10500 for non potable reuse
Key Benefits of Installing an STP in Your Hospital
Regulatory Compliance
Avoid ₹5 lakh per day closure penalties.
Cost Savings
Recycle for cooling towers & landscaping.
Patient & Community Safety
Stop pathogen release into civic drains.
Green Credentials
Earn NABH & IGBC points; boost ESG reporting.
Odour free campus thanks to closed, vent scrubbed biological tanks.
Installation, Operation & Maintenance Snapshot
| Stage | Timeline | Key Tasks |
|---|---|---|
| Design & Approvals | 2–4 weeks | Effluent study, PCB consent, civil GA drawings |
| Civil & Mechanical | 6–8 weeks | Tank construction, piping, electro mechanical erection |
| Commissioning | 2 weeks | Biomass seeding, process optimisation |
| O&M (Year 1) | Ongoing | Operator training, monthly audits, sludge disposal |
Choose with confidence
Choosing the right sewage and effluent treatment
- Measure or estimate daily wastewater flow and peak hours.
- For effluent, get a characterisation (BOD, COD, TSS, oil, pH).
- Decide where treated water will be reused.
- Check space available and whether the plant can be underground or above ground.
- Plan for sludge handling and for who will operate the plant.
How we work
From first message to running system
- 01
Tell us the need
Share your requirement, site details and any water report or photos.
- 02
We review and size
We ask the right questions and size the system for your site.
- 03
Clear quotation
You get a quote with scope, specification and timelines.
- 04
Build, install, support
We manufacture, install, commission and stay available for service.
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Questions, answered
FAQs about Hospital Sewage Treatment Plant
Still unsure? Ask us directly or call +91 95000 55565.
Is an STP mandatory for hospitals in India?
Yes. CPCB guidelines stipulate that any healthcare facility generating > 100 KLD wastewater must commission an STP or ETP that meets discharge norms.
What is the typical footprint of a 200 KLD hospital STP?
With MBBR technology and FRP tanks, expect roughly 180 m² including sludge dewatering.
Can the treated water be reused for hand washing?
No. Current regulations allow reuse for toilet flushing, cooling towers, HVAC, gardening and firefighting—but not for potable or hand wash use.
How often is sludge removed?
On average, once every 25–30 days, depending on patient load and influent characteristics.
What is the payback period?
Most hospitals recover CAPEX via water purchase savings within 18–24 months.
How is an STP sized?
An STP is sized on daily sewage flow (KLD), which depends on the number of people and the water use per person, plus a margin for peaks. We confirm the size after reviewing your site details.
What is the difference between an STP and an ETP?
An STP treats domestic sewage from toilets, kitchens and bathrooms. An ETP treats industrial effluent, which varies with the process and often needs chemical treatment before biological treatment.
Can treated water be reused?
Yes. Treated sewage is commonly reused for flushing, gardening and cooling towers. Additional polishing such as filtration and disinfection is added to suit the reuse.
Which technology is best for limited space?
MBBR and MBR plants need less space than conventional extended aeration. The final choice depends on load, budget and the treated water quality you need.
Do you help with operation after installation?
We commission the plant, train operators and offer service support. Operation and maintenance arrangements are confirmed with the quote.
Start a conversation
Tell us what you need
Share a few details about Hospital Sewage Treatment Plant and your site. We reply on working days with questions or a quote.
Talk to a person
Speak with the Greenly team
No call centre. Your message reaches the people who design and build the system.
- +91 95000 55565
- WhatsApp +91 95000 55565
- greenly@greenly.co.in
- 101, 102 & 103 Tass Industrial Estate, SIDCO Industrial Estate, Ambattur, Chennai 600058
Visits by appointment - Open 10:00 am – 5:30 pm