CIMNE Nature and FWN visit the desalination plant of El Prat de Llobregat
In July, CIMNE Nature's Group and FWN teams visited the desalination plant's facilities, located at Llobregat river mouth and operated by Aigües Ter Llobregat (ATLL). The desalination plant, which started operating in summer 2009, is the biggest in Europe for drinking water production.
The plant was built in order to increase the water availability for supplying more than 120 towns, for more than 4,5 millions inhabitants. It is a modular desalination plant that can produce up to 2,300 liters of fresh water per second from seawater by reverse osmosis.
After the presentation of the new Cool Steam technology developed by FWN and CIMNE Nature Group, the team of ATLL (licensee of Generalitat de Catalunya) showed all the processes to which seawater is subjected within its cycle along the plant.
Seawater collection is carried out at 30 metres depth and 2,2 kilometres away from the coast and it is driven until the pumping station located on the beach, which propels seawater to the desalination plant located 3 kilometres away. Once inside the plant, seawater is pre-treated by flocculation-flotation process and run through open and closed filters.
After this process, freshwater is remineralized, by providing some minerals for it to be completely potable according with the legislation in force. The plant has pressure exchangers which allow an energy saving of around 50%.