| Lenntech engineers design and build tailor-made reverse osmosis and nanofiltration plants.
Our skid-mounted reverse osmosis plants range from tapwater, brackish water to seawater desalination and cover all type of application including drinking water, irrigation water and process water.
Compact BWRO plant < 500L/h
Small size BWRO plant < 1500L/h
Medium size BWRO plant < 3500 L/h
Large size BWRO plant < 70 m3/h
SWRO small plants < 2 m3/h
SWRO large plants < 100 m3/h
Plants above 70 m3/h must be multiple-skid mounted.
Turnkey and tailor made RO plants.
In most cases, a RO plant must be preceded by a proper pretreatment to avoid membrane fouling by sediments, hardness, organic matter, bacteria, silica, metal oxides or even chlorine.
Also, RO permeate water is often more acidic than the feed water due to dissolved carbon dioxide. Common post-treatment are pH neuralisation and remineralisation
General design data for Reverse Osmosis Plants:
|
TWRO
Tap water |
BWRO
Brackish water |
SWRO
Sea water |
| Salinity |
< 1500 ppm |
< 8000 ppm |
35000 - 45000 ppm |
| Recovery |
80% |
65-80% |
35-45% |
| Working pressure |
< 15 bar |
15-25 bar |
50-75 bar |
| Membrane types |
Tap/Brackish 4" or 8" |
Seawater 4" or 8" |
| Flux |
30-35 l/h.m2 |
25-30 l/h.m2 |
15-20 l/h.m2 |
| Specific energy at 25 oC |
< 0.75 kWh/m3 |
1.5 kWh/m3 |
5 kWh/m3 or 2-3 kWh/m3 with energy recovery |
| Configuration |
Skid mounted or containerized (10 to 40 ft) |
What is reverse osmosis?
Reversed Osmosis membrane cleaning
Seawater desalination
Reverse Osmosis membranes
Reverse Osmosis membrane cleaning | 
