Reverse Osmosis Plants

30 m3/h TWRO plant (stainless steel)

20 m3/h BWRO plant

3 m3/h BWRO plant

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:

	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)