[     Product listing ](/solutions/technologies "  Product listing")

 

 

 

#### Processes for Sea Water Desalination

**ENTROPIE can offer sea water desalination systems based on either of the leading technologies depending on fresh water needs**



    [CONTACT AN EXPERT](https://www.veoliawatertechnologies.com/en/contact)

 



 

 



 [Overview](#1) [Applications](#2) [Product range and Resources](#3) 

 

 

## Overview

 

 

 

[**ENTROPIE** ](http://www.entropie.com)is the world leading specialist in sea water desalination through low temperature distillation processes such as :

- Multiple Effect Distillation (MED)
- Multiple Effect Distillation with Thermal Vapour Compression (MED-TVC)
- **Multiple Effect Distillation with Mechanical Vapour Compression (MED-MVC)**

A Multi Effect Desalination MED unit is an evaporator where sea water is evaporated in one or more ( up to 14 ) evaporation stages at low temperature (< 70°C ) in order to produce clean distillate water.

  
MED process is designed to produce distilled water with steam or waste heat from power production or chemical processes, and/or to produce potable water.



 

 

 



 

 

   ![](/sites/g/files/dvc2851/files/styles/media/public/image/2019/08/Turkmenbaschi-push.jpg.webp?itok=FnKnunO7)   





 

 





   ![](/sites/g/files/dvc2851/files/styles/media/public/image/2019/07/Damietta-push.jpg.webp?itok=sM1O32jc)   





 

 





 

 

 

 





### MED-MVC Process Scheme

   ![](/sites/g/files/dvc2851/files/styles/default/public/image/2019/08/MED-MVC-Diagram.jpg.webp?itok=DyEE5K4_)   



- When no steam is available, it is still possible to use the MED process by adding a Mechanical Vapour compressor (MED-MVC).
- In such case the vapour is recycled from the cold cell to the hot one by means of a centrifugal compressor driven by an electric engine.
- A maximum capacity of 5,000 m3/day can be obtained with current compressor technology



 

 

 



 

 

 

## Applications

 

 

 

### The technology

  
When no steam is available, it is still possible to use the MED process with a Mechanical Vapour Compressor (MED-MVC). In such case the vapour is recycled from the cold cell to the hot one by means of a centrifugal compressor driven by an electrical engine (refer to sketch). The electrical consumption of such system is in the range of 8 to 15 kWh/m3. Due to current limitation in compressors technology the maximum capacity of MED-MVC units is 5000 m3/day per unit.

   ![](/sites/g/files/dvc2851/files/styles/default/public/image/2019/08/Sketch4.jpg.webp?itok=JIoZnlW4)   



### The Advantages

- **Range up to 5 000 m3/day**
- **Are environmentally clean** : 100 % electrical process (no external heat source)
- **Have high energy efficiency** : electrical energy consumption ranging from 8 to 15 kWh/m3
- **Sea water consumption is reduced** with only make up water necessary (no need of cooling water)

   ![](/sites/g/files/dvc2851/files/styles/default/public/image/2019/08/43%20photo%20damietta%202%20%282%29.jpg.webp?itok=jWArcL7i)   





 

 

 



 

 

 

## Product range and Resources

 

 

 

  Product range

   

 

 



 [   ![](/sites/g/files/dvc2851/files/styles/vwt_product_content_push/public/image/2019/07/Ras-Az-Zwar-push.jpg.webp?itok=8MwStG2l)   





 

### Multiple Effect Distillation - MED TVC

Multiple Effect Distillation with Thermal Vapour Compression

 

 

Evaporation - Distillation - Crystallization

 

 

 

 ](/technologies/multiple-effect-distillation-med-tvc) 



 

 [   ![](/sites/g/files/dvc2851/files/styles/vwt_product_content_push/public/image/2019/08/MED-push.jpg.webp?itok=rgvMu6C_)   





 

### Multiple Effect Distillation (MED)

Thermal sea water desalination

 

 

Evaporation - Distillation - Crystallization

 

 

 

 ](/technologies/multiple-effect-distillation-med) 



 

 

 



 

 

 

 





 

 

 

 

 

  Resources

   

 

 



 

 [PDF

  MED Brochure  (2.02 MB)  

    ](/sites/g/files/dvc2851/files/document/2023/05/Brochure%20MED%20desalination%20new.pdf)