CIE Waste water treatment and zero liquid discharge plants for Unit for separation of soluble salts from water in order to obtain water with low conductivity.

In nature there is an occurring phenomenon where a solvent (water) will move from an area of low solute (salt) concentration to one where there is an higher solute (salt) concentration through a membrane.
This process is referred to an Osmosis.

Reverse Osmosis (R.O.) is a water treatment process to produce purified/potable water by using applied pressure to overcome the osmotic pressure of the solution. By applying a pressure to the solution on one side of a semipermeable membrane you force the water through the membrane into the permeate stream to be used in a process or for drinking.

The high salt concentration stream is referred to as the reject which is either sent to waste or to be used in a second reverse osmosis (R.O.) stage.

Reverse Osmosis membrane

REVERSE OSMOSIS

Unit for separation of soluble salts from water in order to obtain water with low conductivity.