Large Seawater Reverse Osmosis Plant
Large Desalination System
Check our complete Large SWRO package here
- High rejections membranes
- Energy recovery by turbine or pressure exchanger to maximize cost savings
- All equipment mounted on stainless steel 304 skid
- Standard control with RO micro-controller and conductivity display
- Advanced control with flow, pressure, pH and conductivity transmitters for data monitoring, normalisation and SCADA

The system includes:
* Antiscalant dosing station* 5 microns filter
* High pressure pump
* Energy recovery turbine or Pressure exchanger
* SW membranes 8 " membranes
* Fiber glass pressure vessels
* Standard or advanced instrumentation
| Type SWRO-L | 5 | 10 | 20 | 30 | 50 | 70 | 100 |
| Permeate flow * l/h | 5 | 10 | 20 | 30 | 50 | 70 | 100 |
| Feed flow l/h (45% Recovery) * |
11 | 22 | 44 | 67 | 111 | 156 | 222 |
| Salt Rejection at 25° C | ~ 95% | ||||||
| Connections Feed | 2" | 3" | 4" | 5" | 61/2" | 7 1/2" | 10" |
| Permeate | 1 1/2" | 2" | 3" | 3 1/2" | 4 1/2" | 5" | 6" |
| Concentrate | 1 1/2" | 2" | 3" | 4" | 5" | 6" | 7" |
| Power HPP with energy recovery ** |
15 - 20kW | 30 - 40kW | 50 - 70kW | 95 - 110kW | 150 - 200kW | 200 - 250kW | 280 - 360kW |
| Dimensions mm | |||||||
| Length | 4000 | 4000 | 6000 | 7000 | 8000 | 8000 | 8000 |
| Width | 1000 | 1000 | 1200 | 1500 | 1500 | 2000 | 2000 |
| Height | 1600 | 1600 | 1600 | 1800 | 1800 | 1800 | 1800 |
| Rinse tank volume (L) | 300 | 550 | 1000 | 1500 | 2500 | 3500 | 5200 |
* under standard conditions: TDS 35.000 ppm, temperature = 25° C, pH = 8
** Also available in 50Hz or 60Hz
SWRO plants with 2 passes are also available byadding a BWRO plant in serie to further purify SWRO permeate and maximise Boron removal in warm and very salty waters.
These data are given for information purpose only. They are subject to modofications depending on the water quality.
Seawater RO units always required a pre-treatment, that 's why Lenntech offers large SWRO packages including pre-treatment and post-treatment.
Back to Reverse Osmosis Plants
Seawater desalination
What is reverse osmosis?
Reverse Osmosis membrane cleaning
For more information or quotation, please contact us:
Feedback Form or call us on +31 152 610 900