What are the Technical Specifications and Requirements of a RO Plant?
From feed water, reverse osmosis (RO) can remove up to 99 % of dissolved salts, colloids, particles, organics, bacteria, and pathogens.
Reverse osmosis is a method that removes a wide variety of salts from water to produce high-purity water. It is thus regarded as a considerably safer method of creating clean water for many commercial and industrial purposes.
Technical specifications of a Reverse Osmosis (RO) Plant
The technical specifications/features of a reverse osmosis (RO) plant can be as follows or as determined by the tendering authority-
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S. No |
Description of the RO Components |
RO Plant Specifications depending upon capacity |
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250LPH |
500LPH |
1000 LPH |
2000LPH |
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1. |
Raw Water Feed Pump |
Type |
Centrifugal |
Centrifugal |
Centrifugal |
Centrifugal |
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Flow rate |
1500 L/h |
1500 L/h |
2000 L/h |
3300 L/h |
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Discharge Capacity |
2.5 kg/cm2 (min.) |
2.5 kg/cm2 (min.) |
2.5 kg/cm2 (min.) |
2.5 kg/cm2 (min.) |
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Motor Rating |
0.5 HP (min.) |
1.0 HP (min.) |
1.0 HP (min.) |
2.0 HP (min.) |
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Electricity |
220 V, Single phase |
220 V, Single phase |
220 V, Single phase |
415 V, Three phase |
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Quantity |
1 |
1 |
1 |
1 |
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2. |
Pressure Sand Filter or PSF (Capacity below 500 LPH) |
Capacity |
1500 L/h |
1500 L/h |
NA |
NA |
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Min. Operating Pressure |
1.5 kg/cm2 |
1.5 kg/cm2 |
NA |
NA |
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Media |
Support bed + Carbon |
Support bed + Carbon |
NA |
NA |
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Quantity |
1 |
1 |
NA |
NA |
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2i. |
Dual Media Filter or DMF (For capacity> 500 LPH) |
Capacity (min.) |
NA |
NA |
2000 L/h |
3300 L/h |
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Operating Pressure(Min) |
NA |
NA |
3.5 kg/cm2 |
3.5 kg/cm2 |
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Type of Valve |
NA |
NA |
Single- multiport |
Single- Multiport |
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Media |
NA |
NA |
Anthracite + SupportBed. |
Anthracite + Support Bed. |
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Bed depth (min.) |
NA |
NA |
800mm |
800mm |
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Quantity |
NA |
NA |
1 |
1 |
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3. |
Activated Carbon Filter or ACF |
Capacity |
1000 L/H |
1200 L/H |
2000 L/H |
3500 L/H |
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Min. Operating Pressure |
1.5 kg/cm2 |
1.5 kg/cm2 |
1.5 kg/cm2 |
1.5 kg/cm2 |
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Media |
Activated Carbon + sand |
Activated Carbon + sand |
Activated Carbon + sand |
Activated Carbon + sand |
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Quantity |
1 |
1 |
1 |
1 |
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4. |
Antiscalant Dosing System |
Dosing Pump |
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Type |
Electro- magnetic |
Electro- magnetic |
Electro- magnetic |
Electro- magnetic |
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Capacity |
1.5 L/h |
1.5 L/h |
1.5 L/h |
1.5 L/h |
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Discharge Pressure |
4 kg/cm2 |
4 kg/cm2 |
4 kg/cm2 |
4 kg/cm2 |
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Quantity |
1 |
1 |
1 |
1 |
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Dosing Tank |
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Capacity |
100 L |
100 L |
100 L |
100 L |
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Material of Const. |
HDPE |
HDPE |
HDPE |
HDPE |
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Quantity |
1 |
1 |
1 |
1 |
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5. |
Micron cartridgefilter (For removing SS>5 micron) |
Capacity |
1000 L/h |
1200 L/h |
2000 L/h |
3300 L/h |
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Material of Cartridge |
Polypropylene |
Polypropylene |
Polypropylene |
Polypropylene |
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Filter Rating |
5 micron |
5 micron |
5 micron |
5 micron |
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Length |
10” |
20” |
20” |
20” |
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Quantity |
1 |
1 |
1 |
1 |
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6. |
High Pressure Pump |
TypeofPump |
Vertical Multistage centrifugal |
Vertical Multistage centrifugal |
Vertical Multistage centrifugal |
Vertical Multistage centrifugal |
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Capacity |
1000 L/h |
1200 L/h |
2000 L/h |
3300 L/h |
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DischargePressure (Max.) |
11 kg/cm2 |
13 kg/cm2 |
13 kg/cm2 |
13 kg/cm2 |
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Material of Construction |
SS 304 |
SS 304 |
SS 304 |
SS 304 |
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Electricity |
220 V, Single phase |
220 V, Single phase |
220 V, Single phase |
415 V, Three phase |
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Quantity |
1 |
1 |
1 |
1 |
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7. |
Reverse Osmosis Membrane |
Permeate capacity |
250 L/h |
500 L/h |
1000 L/h |
2000 L/h |
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Membrane Type |
Spiral wound TFC- polyamide |
Spiral wound TFC- polyamide |
Spiral wound TFC- polyamide |
Spiral wound TFC- polyamide |
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Size |
Dia. 4’’ X 40’’ long |
Dia. 4’’ X 40’’ long |
Dia. 4’’ X 40’’ long |
Dia. 4’’ X 40’’ long |
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No. of Membrane |
1 |
2 |
5 |
9 |
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No. of Membrane Housing |
1 |
2 |
2 |
3 |
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SkidMaterial of Construction |
Mild Steel – Powder Coated |
Mild Steel – Powder Coated |
Mild Steel – Powder Coated |
Mild Steel – Powder Coated |
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8. |
UV system |
Capacity |
250 L/h |
500 L/h |
1000 L/h |
2000 L/h |
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Quantity |
1 |
1 |
1 |
1 |
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9. |
Instrument List |
Pressure gauges |
3 No’s. |
3 No’s. |
5 No’s. |
5 No’s. |
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Range |
0 – 21 bar |
0 – 21 bar |
0 – 21 bar |
0 – 21 bar |
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Size |
4’’ |
4’’ |
4’’ |
4’’ |
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Pressure switches |
2 No’s. |
2 No’s. |
2 No’s. |
2 No’s. |
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Range |
0-450 psi |
0-450 psi |
0-450 psi |
0-450 psi |
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Conductivity meter |
1 (Panel Mounted) |
1 (Panel Mounted) |
1 (Panel Mounted) |
1 (Panel Mounted) |
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Rotameter |
2 |
2 |
2 |
2 |
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Level switch |
2 |
2 |
2 |
2 |
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Digital TDS Meter |
1 |
1 |
1 |
1 |
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10. |
Electrical Control Panel |
Starters, overload relays, single/three phase controller for pump |
Should be provided of adequate capacity |
Should be provided of adequate capacity |
Should be provided of adequate capacity |
Should be provided of adequate capacity |
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Voltmeter, Ammeter, MCB’s |
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