![](/picts/css/logo-eau.png)
TRESCH
TRAITEMENT DES EAUX
ZI de Chassieu
3, rue Blaise Pascal
69680 CHASSIEU
Tél. +33 (0)4 37 60 25 25
Fax +33 (0)4 37 60 25 26
Contact us
SEE THE PLAN
You are here :
Home
Equipments
Membrane technology
MEMBRANE TECHNOLOGY
A membrane is a barrier of a few hundred nanometres to a few millimetres thick, which is selective and which under a transfer force will enable or inhibit the passage of certain components between two environments it separates. They are used to separate and/or concentrate particles, molecules, micro-organisms or ionic species in solution in a liquid. The advantage of these processes rests in cold operation and in their low energy and chemical product consumption.
![Technologie membranaire traitement eaux](/lib/picts/pages1b/tresch-materiel-technomembranaire-02.png)
A membrane is a barrier of a few hundred nanometres to a few millimetres thick, which is selective and which under a transfer force will enable or inhibit the passage of certain components between two environments it separates. They are used to separate and/or concentrate particles, molecules, micro-organisms or ionic species in solution in a liquid. The advantage of these processes rests in cold operation and in their low energy and chemical product consumption.
There are 4 pressure gradient membrane processes: micro-filtration (MF), ultra-filtration (UF), nano-filtration (NF) and reverse osmosis (RO). They are distinguished by the size and type of species they may separate.
Micro and ultra-filtration enable the total elimination of suspended matter to a disconnection threshold of 0.01µ. They are used essentially in surface water clarification or effluent recycling.
Nano-filtration is an intermediate process between ultra-filtration and reverse osmosis which is used to reduce divalent ions, disconnection threshold 0.001µ.
Nano-filtration is used for softening, partial desalination of brackish water or drinking water production.
Reverse osmosis is the highest-performing membrane technology. It is able to eliminate all dissolved matter. It is mainly used to desalinate sea water and produce demineralised water.
![unité membranaire traitement de l'eau](/lib/picts/pages1b/tresch-materiel-technomembranaire-01.png)
TRESCH TRAITEMENT DES EAUX can offer you compact and modular membrane units which are fully automated and tested in our workshops:
- Frontal or tangential micro and ultra-filtration
- Nano-filtration
- Single or double run reverse osmosis