Lenntech Water treatment & purification Lenntech Water treatment & purification

Reverse Osmosis

30 m3/h TWRO plant (stainless steel)

20 m3/h BWRO plant

3 m3/h BWRO plant

LennRO Systems

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 pre-treatment 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:

Tap water
Brackish water
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

About Lenntech

Lenntech BV
Distributieweg 3
2645 EG Delfgauw

tel: +31 152 610 900
fax: +31 152 616 289
e-mail: info@lenntech.com

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