Common Effluent Treatment Plant
Running an SME shouldn’t mean compromising on environmental compliance. A CETP lets multiple units share a single, expertly managed wastewater facility—cutting cap ex, land use and headaches.
- Manufactured in Ambattur, Chennai
- Sized to your site and water
- Installation and service support
Why a CETP Beats Individual ETPs
Zero upfront plant cost—pay only a usage fee
Land saved for core production, not wastewater tanks
Lower per m³ tariff thanks to economies of scale
How a Common Effluent Treatment Plant Works
Tankers or HDPE pipelines deliver raw effluent to a central equalisation tank.
Automatic pH neutralisation and surface aeration start organic breakdown.
A clariflocculator separates suspended solids.
An aeration tank + activated sludge polishes BOD/COD.
Polished water meets CPCB discharge standards before final release or reuse.
Greenly’ End to End CETP Expertise
From pilot scale design to O&M contracts, we have commissioned 40+ CETPs across India, including red category clusters in Ankleshwar and Tiruppur. Our modular skids scale from 50 m³/day to 3,000 m³/day.
Cost Snapshot
| Plant Size | Cap Ex Saved per Unit | O&M ₹/m³* |
|---|---|---|
| ≤ 250 m³/day | ₹1.2 Cr | 18.5 |
| 250–750 m³/day | ₹2.7 Cr | 14.0 |
| > 750 m³/day | ₹4.9 Cr | 11.2 |
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 Common Effluent Treatment Plant
Still unsure? Ask us directly or call +91 95000 55565.
Do SMEs still need individual consent?
No. Consent is clubbed under the CETP operator, easing compliance.
Is CETP suitable for high TDS waste?
Greenly integrates RO and MEE units to handle textile/chemical streams with TDS ≥ 6,000 mg/L before discharge.
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.
Is STP sludge hazardous?
Domestic sewage sludge is generally non-hazardous. After dewatering it can often be used as manure, subject to local rules.
Start a conversation
Tell us what you need
Share a few details about Common Effluent 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