Waste Water Treatment Plant
Greenly is widely recognised as India’s designer and manufacturer of advanced wastewater treatment plants.
- Manufactured in Ambattur, Chennai
- Sized to your site and water
- Installation and service support

What Is a Wastewater Treatment Plant?
A wastewater treatment plant (WWTP) is an engineered system that removes organic matter, pathogens, suspended solids, oil, grease, toxic chemicals and excess nutrients from used water before it is discharged or reused. Without treatment, wastewater from homes and factories would seep into drains, contaminate lakes and rivers, and threaten both ecosystems and human well-being.At its core, a WWTP relies on physical, biological and chemical processes—screens to trap debris, aeration to encourage bacteria that digest pollutants, clarifiers to settle sludge, and disinfection to destroy harmful microbes.
Core Technologies We Use
Extended Aeration (EA)
robust, energy-optimised variant of activated-sludge ideal for small to mid-scale communities.
Membrane Bio-Reactor (MBR)
combines biological degradation with ultrafiltration membranes for crystal-clear, pathogen-free output.
Moving Bed Bio-Reactor (MBBR)
bio-film carriers boost treatment capacity inside a compact tank, perfect for retrofits.
Sequential Batch Reactor (SBR)
time-sequenced fill-and-draw process that treats variable loads with minimal footprint.
Submerged Aerated Fixed Film (SAFF)
durable media allow high biomass concentration and extremely low maintenance.
Capacity Range We Offer
3–50 KLD
skid-mounted, plug-and-play units for villas, schools, quick-service restaurants and small workshops.
50 Kld–5 MLD
modular containerised plants for residential complexes, hotels, breweries and mid-size manufacturing.
5 Mld–100 MLD
civil-structure or prefabricated steel plants for industrial estates, smart cities and government utilities.
Advantages of Installing a Truewaters Wwtp
Save millions of litres each year by recycling treated water for gardening, cooling towers and process rinse.
Low Operating Cost
VFD-controlled aeration reduces power bills.
Value from Sludge
stabilised biosolids can be composted into nutrient-rich manure for landscaping or sold to farmers.
Regulatory Compliance
meet CPCB, DPCC and local norms effortlessly—avoid hefty fines and shutdown risks.
Compact Footprint
pre-engineered modules fit into tight basements or rooftops with minimal civil work.
ROI
competitive pricing plus water-purchase savings deliver payback in as little as 18 months.

Key Applications
Oil & Mining, Textile, Pharma, Food-Processing
other manufacturing sectors coping with stringent discharge limits.
Educational campuses
seeking green accreditations and lower utility costs.
Hospitality chains
aiming for LEED/IGBC certification and guest safety.
Large housing societies & smart townships
committed to zero-liquid-discharge living.
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.
Related solutions
More in Wastewater & Sewage Treatment
Questions, answered
FAQs about Waste Water Treatment Plant
Still unsure? Ask us directly or call +91 95000 55565.
How much space is needed for a 100 KLD sewage treatment plant (STP)?
A compact Greenly 100 KLD STP—built on the MBBR + MBR process—requires only about 120 m² (roughly half a badminton court). Our vertical-stacked tanks and integrated control room maximise capacity while minimising footprint.
Can treated wastewater be made safe for drinking?
Yes. When you add our optional RO + UV final-polish skid, the treated water meets WHO potable-water standards. Without the polish stage, it is ideal for flushing, cooling towers and landscape irrigation.
What is the routine maintenance schedule for a Greenly STP?
Standard O&M involves daily parameter checks, monthly membrane cleaning for MBR modules and quarterly sludge removal.
Do you handle government approvals for wastewater treatment plants?
Absolutely. Our compliance team prepares all paperwork and liaises with DPCC, CPCB and local authorities, ensuring your Consent to Establish (CTE) and Consent to Operate (CTO) are granted without delays.
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 Waste Water 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