What are the Technical Features of Commercial RO Plants?
Depending on the type of membrane utilized and the quality of the raw water supply, rejection rates of salts from water are typically in the range of 95–99.5%. The variety of membranes are currently available which can be used in the Commercial RO Plants to produce permeate water with a variety of characteristics. Low Energy Membranes, which are used in the production of standard-designed ROs, produce permeate water with a quality of about 10 micro Siemens from input water within a 500–700 micro Siemens range.
Constituents of Commercial RO Plants
The system typically includes a pressure pump, housing and a membrane. Pure water (or permeate), which is collected and sent to service is forced under pressure into the housing. Reject water (or concentrate) is gathered from another outlet and sent to the drain, with some of the recycled concentrated water going back into the pump's inlet. As a result, a recovery ratio of roughly 75% can be reached without significantly fouling the membrane because the amount of water that is discharged to the drain is maintained to a minimum. Recirculation enables a higher water flow through the pump, lessening the strain on its bearings and maintaining the pump's cooler.
Technical Features of Commercial RO Plants
|
S. No. |
Description |
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 |
|
Flow rate |
1500 Lt/Hour |
1500 Lt/Hour |
2000 Lt/Hour |
3300 Lt/Hour |
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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 (PSF) {For capacity below 500 LPH} |
Capacity |
1500 Lt/Hour |
1500 Lt/Hour |
NA |
NA |
|
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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|
3. |
Dual media filter (DMF) {For capacity above 500LPH} |
Capacity (min.) |
NA |
NA |
2000 Lt/Hour |
3300 Lt/Hour |
|
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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|
4. |
Activated carbon filter (ACF) |
Capacity |
1000 Lt/Hour |
1200 Lt/Hour |
2000 Lt/Hour |
3500 Lt/Hour |
|
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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|
5. |
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 Lt/hour |
1.5 Lt/hour |
1.5 Lt/hour |
1.5 Lt/hour |
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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 Lt |
100 Lt |
100 Lt |
100 Lt |
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|
Material of Const. |
HDPE |
HDPE |
HDPE |
HDPE |
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|
Quantity |
1 |
1 |
1 |
1 |
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|
6. |
Micron Cartridge Filter (For removing suspended particles >5 micron) |
Capacity |
1000 Lt/hour |
1200 Lt/hour |
2000 Lt/hour |
3300 Lt/hour |
|
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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|
7. |
High Pressure Pump |
Typeof Pump |
Vertical Multistage centrifugal |
Vertical Multistage centrifugal |
Vertical Multistage centrifugal |
Vertical Multistage centrifugal |
|
Capacity |
1000 Lt/hour |
1200 Lt/hour |
2000 Lt/hour |
3300 Lt/hour |
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|
Discharge Pressure (Max.) |
11 kg/ cm2 |
13 kg/ cm2 |
13 kg/ cm2 |
13 kg/ cm2 |
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|
Material of Construction |
SS |
SS |
SS |
SS |
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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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|
8. |
Reverse Osmosis Membrane |
Permeate capacity |
250 Lt/hour |
500 Lt/hour |
1000 Lt/hour |
2000 Lt/hour |
|
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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|
9. |
UV system |
Capacity |
250 Lt/hour |
500 Lt/hour |
1000 Lt/hour |
2000 Lt/hour |
|
Quantity |
1 |
1 |
1 |
1 |
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|
10. |
Instrument List |
A) Pressure gauges |
3 Nos. |
3 Nos. |
5 Nos. |
5 Nos. |
|
Range |
0 – 21 bar |
0 – 21 bar |
0 – 21 bar |
0 – 21 bar |
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|
Dial Size |
4 inches |
4 inches |
4 inches |
4 inches |
|
|
|
B)Pressure switches |
2 Nos. |
2 Nos. |
2 Nos. |
2 Nos. |
|
Range |
0-450 psi |
0-450 psi |
0-450 psi |
0-450 psi |
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|
C) Conductivity meter |
1 (Panel Mounted) |
1 (Panel Mounted) |
1 (Panel Mounted) |
1 (Panel Mounted) |
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|
D) Rotameter |
2 |
2 |
2 |
2 |
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|
E)Level switch |
2 |
2 |
2 |
2 |
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|
F) Digital TDS Meter |
1 |
1 |
1 |
1 |
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|
11. |
Electrical Control Panel |
Starters, overload relays, single/three phase controller forpump |
Should be provided of adequate capacity |
Should be provided of adequate capacity |
Should be provided of adequate capacity |
Should be provided of adequate capacity |
|
B)Voltmeter, Ammeter, MCB’s |
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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|
C)PLC & Touch Panel |
Mustbe provided |
Must be provided |
Must be provided |
Must be provided |
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|
D) Feed/ Product water conductivity meter |
Mustbe provided |
Must be provided 
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