Manufacturer and Supplier of RO Plant Sand Filter in Chennai
Greenly is Chennai’s trusted manufacturer and supplier of high-performance sand filters built specifically for Reverse Osmosis (RO) plants. Whether your system is residential, commercial, or industrial, our filters safeguard water quality by removing sediments and suspended particles before the water reaches the RO membranes—maximising efficiency, extending membrane life, and cutting maintenance costs.
How a Sand Filter Fits Into Your RO Process
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Pre-filtration: Raw water enters a bed of graded sand and gravel.
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Particle capture: Suspended solids, silt, and turbidity lodge in the media while clean water passes through.
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Back-washing: Flow is reversed at set intervals to dislodge trapped debris, keeping the filter at peak performance.
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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
Local Expertise: Over 500 installations across Tamil Nadu.
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.
Frequently Asked Questions
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.