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ROTEK compact commercial reverse osmosis system is a durable piece of equipment which, with proper care and maintenance will last for many years. BW series systems are part of a family of reverse osmosis units designed for operation with brackish feedwaters having TDS values below 10,000ppm. It is specially designed for brackish water desalination with automatic permeate flushing system and pre-filtration systems on one single frame. Flushing time can be adjustable from PLC inside the system. Models are available with permeate outputs of between 1,500 and 5,000 litres/hour as shown in the specifications tables. |
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Product Features
■304 grade stainless steel perimeter frame.
■Integrated PLC control with TDS monitor and schematic panel.
■Automatic membrane flush (with permeate water) at every 12 hours continuous operation.
■Flow meters for permeate (treated product) and reject (waste) streams.
■Liquid filled pressure gauges for feed water pressure and membrane discharge pressure.
■Feed water inlet cartridge filter.
■Feed and Permeate Flush water inlet solenoid valves.
■Low feed water pressure sensor with automatic shutdown.
■High pressure FRP membrane pressure vessels.
■High performance, low pressure membranes.
■Raw water / permeate water flush feed pump.
■Compact design with all pre-filters and dosing system on one frame. |
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Model
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BW 9000 |
BW 12000 |
BW 15000 |
BW 18000 |
BW21000 |
BW30000 |
Capacity |
GPD / LPD |
9000 / 1500 |
12000 / 2000 |
15000 / 2500 |
18000 / 3000 |
21000 / 3500 |
30000 / 5000 |
Working Pressure |
PSI / BAR |
200 - 300 / 14 - 20
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Raw Water Feed Pump |
Injection type S.S pump + pressure tank
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Sand Filter |
Control Valve |
Automatic Timer Control Valve |
Size & Capacity |
13"x54"(70L) |
14"x65"(100L) |
16"x65"(120L) |
18"x65"(150L) |
21"x62"(200L) |
21"x62"(200L) |
Carbon Filter |
Control Valve |
Automatic Timer Control Valve |
Size & Capacity |
13"x54"(70L) |
14"x65"(100L) |
16"x65"(120L) |
18"x65"(150L) |
21"x62"(200L) |
21"x62"(200L) |
Dosing System |
Anti-scalant Dosing System x 1 set (dosing pump + chemical tank + level switch) |
Pre-Filter |
BB Housing + PP 5um Cartridge |
High Pressure Pump |
Multi-Staged Vertical Pump |
Membrane Housing |
High pressure FRP end port type, 2100 kPa (300 PSI) rating |
RO Membrane |
4040 x 6 |
4040 x 8 |
4040 x 10 |
4040 x 12 |
8040 x 4 |
8040 x 6 |
Frame
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Parts |
Stainless steel main frame, rollers, brackets
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Size |
2170mm x 690mm x 1560mm ( L x W x H )
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Feed Water Specifications (minimum)
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Hardness |
< 1 ppm |
Hydrogen Sulphide |
0 ppm |
Free Chlorine |
0 ppm |
Manganese |
< 0.05 ppm |
T.D.S. |
< 10,000 ppm |
Organics |
< 1 ppm |
Turbidity (SDI) |
< 5 |
Temperature |
+ 5 to + 40°C |
pH |
3 - 11 |
Silica |
< 1.0 ppm |
Iron |
< 0.01 ppm |
Pressure |
> 300 kPa |
R.O. Operating Parameters
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Min. Pressure |
BAR (35 PSI) |
Max. Pressure |
BAR (300 PSI) |
Max. Hardness |
1 ppm |
Min. Salt Rejection |
96% |
Max. Salt Rejection |
99% |
Max. TDS |
2000 ppm |
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