Desalination plants separate sea and brackish water into two flows consisting of a freshwater stream (permeate in reverse osmosis, condensate in thermal processes) with a low salt content and a stream with a high salt concentration (brine or concentrate). Every desalination technology requires energy for this separation process, which is supplied to the system by thermal or mechanical means (generally as electrical power). The thermal desalination process is based on evaporation and the subsequent condensation of the steam.
The following thermal desalination technologies of WABAG demonstrate special strengths:
- Multi Effect Distillation (MED)
- Thermal Vapour Compression (MED-TVC)
- Mechanical Vapour Compression (MED-MVC)
- Multi Stage Flash (MSF)
Another form of desalination is reverse osmosis (RO) in which the salt is filtered out by means of special membranes and potable water is produced immediately. The major advantage of RO is its extremely low power requirements.