RO Plant Sand Filter
Greenly is Chennai’s manufacturer and supplier of high-performance sand filters built specifically for Reverse Osmosis (RO) plants.
- Manufactured in Ambattur, Chennai
- Sized to your site and water
- Installation and service support
How a Sand Filter Fits into Your RO Process
Pre-filtration
Raw water enters a bed of graded sand and gravel.
Particle Capture
Suspended solids, silt, and turbidity lodge in the media while clean water passes through.
Back-washing
Flow is reversed at set intervals to dislodge trapped debris, keeping the filter at peak performance.
Membrane Protection
By keeping coarse matter out, the RO membranes remain unclogged, delivering higher flow and lower operating pressure.
Key Benefits of Greenly Sand Filters
| Benefit | Why It Matters for Your RO Plant |
|---|---|
| Effective Water Purification | Removes particles down to 20 µm, improving permeate quality. |
| Higher RO Efficiency | Fewer solids mean lower pressure drop across membranes and higher recovery rates. |
| Durability | FRP or mild-steel vessels with corrosion-resistant internals; 20-year design life. |
| Low Operating Cost | Simple back-wash routine minimises consumables and labour. |
| Customisable Designs | Flow rates from 1 m³/h to 200 m³/h; configurable nozzle plates, valves, and media grades. |
| Regulation-Ready | Conforms to BIS drinking-water standards and ISO 9001 manufacturing. |
Applications
Pre-Treatment for RO Plants
Reduces fouling and cleaningfrequency.Stabilises downstream flow and pressure.
Borewell Water Conditioning
Removes sand, silt, iron flakes common in Chennai groundwater.Ideal for villas, apartment complexes, and small industries.
Surface-Water & Municipal Supply
Handles high turbidity during monsoon season.Used by municipal RO plants and packaged-drinking-water units.
Industrial Water Circuits
Food & Beverage: Ensures ingredient-grade water.Pharma & Healthcare: Meets ultrapure feed-water specs.Power & Cooling Towers: Prevents scale and bio-fouling.
Waste-Water Recovery & ETPs
Acts as a polishing step before RO in grey-water recycling, dye-house effluent, and landfill leachate treatment.
Desalination Pre-Treatment
Removes marine sediments and organic debris in coastal seawater RO systems.
Choosing the Right Sand Filter
| Factor | What to Check |
|---|---|
| Flow Rate | Peak and average demand in m³/h. |
| Feed-Water Quality | Turbidity, SDI, iron, oil/grease. |
| System Compatibility | Inlet/outlet sizes, working pressure, automation level. |
| Maintenance Window | Frequency allowed for back-wash and media replacement. |
| Space Constraints | Vertical vs horizontal vessels; skid-mounted options available. |
Why Partner with Greenly
End-to-End Support
Site audit → design → fabrication → commissioning → AMC.
Competitive Pricing
Direct-from-manufacturer rates with no middle-men.
Spare Parts On-Call
Valves, headers, and media available ex-stock in Chennai.
Innovation
Optional PLC-controlled back-wash and differential-pressure sensors for predictive maintenance.
Choose with confidence
Choosing the right filtration systems
- Identify the problem: turbidity, iron, smell, colour or chlorine.
- Match the filter size to flow rate (m³/hour) rather than tank size.
- Plan backwash water and a drain point near the filter.
- Use filtration ahead of RO or softeners to protect them.
- Agree a media replacement schedule at installation.
Shop
Filtration Systems you can order online
Prices and stock shown in the shop. For bulk orders or help choosing, ask us.
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 RO Plant Sand Filter
Still unsure? Ask us directly or call +91 95000 55565.
How often should the sand filter be back-washed?
Typically when the differential pressure reaches 0.7 bar or every 7–10 days, whichever comes first.
What micron size does a sand filter remove?
Standard grading captures particles down to 20 µm; dual-media upgrades can reach 10 µm.
How long does the filter media last?
With proper back-washing, sand media lasts 3–5 years before partial top-up is needed.
Is FRP better than mild steel?
FRP is corrosion-proof and lighter, ideal for coastal climates; mild steel offers higher pressure ratings and is preferred for large industrial flows.
Which filter do I need for borewell water?
Most borewell water needs a sand or multi-grade filter for suspended solids, and an iron removal filter if iron is present. A water test tells us which stages are needed.
What does an activated carbon filter remove?
Carbon filters reduce chlorine, odour, colour and many organic compounds. They are often used after a sand filter and before RO or softening.
How often should filter media be replaced?
Sand media lasts longer than carbon. Replacement depends on water quality and backwash practice; we share a schedule when the filter is installed.
What is backwashing?
Backwashing reverses the flow through the filter to lift and flush out trapped dirt. Regular backwashing keeps pressure drop low and media working.
Can you build filters for agriculture and industry?
Yes. We build sand filters for drip irrigation, industrial process water and RO pre-treatment in sizes to suit the flow.
Do you supply replacement media and cartridges?
Yes. Sand, carbon and other media, cartridges and membranes are available as spares.
Start a conversation
Tell us what you need
Share a few details about RO Plant Sand Filter 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