Desalination, desalination or water treatment are used as synonyms for machines capable of filtering seawater or brackish water to transform it into drinking water. If the average Mediterranean water has a salt concentration of approximately 37,000 ppm, the resulting water will have around 140-300 ppm. The WHO recommends that drinking water should be below 500 ppm.
Last Friday, April 26, Dessal's manager, Xavier Portillo, explained in a simple and entertaining way on the TV3 program "Tot es Mou" how one of our self-made desalination plants works. It is a modular DessaLine water treatment plant with 3 membranes that produces around 8,600 liters of fresh water per day. The consumption of the two pumps together is similar to that of a hair dryer.
The operation is simple:
- Sea water enters the system thanks to the low pressure pump.
- It goes through the basic filtration stage, which consists of a mesh filter and pre-filters. This removes any larger particles that the seawater may contain from the system.
- The high-pressure pump forces the seawater, after passing through the first stage of filtration, through the membranes in a process known as reverse osmosis. This is where the separation between water with a high salt concentration and drinking water takes place.
DessaLine desalination plants produce from 40 to 360 liters/hour, the number of membranes varies from one to three depending on the production and they are available in modular and compact versions. For a greater production of fresh water, we design and customize osmosis plants according to the needs of each client.
Dessal provides solutions for the supply of fresh water, always seeking alternatives that minimise environmental impact.
