10 wells of 170 m in depth

Desalination of sea water through reverse osmosis to supply drinking water to the municipality of Jávea.

Jávea is the first reverse osmosis desalination plant in the world that dilutes rejected brine to minimise the environmental impact.

The catchment of sea water is carried out through 10 wells (7+3 reserve) of 170 m in depth.

General Information

  • Project: Jávea Ocean Water Treatment Plant .
  • Entity: Ayuntamiento Jávea.
  • Location: Jávea, Alicante. Spain.
  • Capacity: 26,000 m3/day.

Key points

  • Disinfection through the addition of sulphuric acid, sodium hypochlorite and ferric chloride.
  • Pumping of raw water through 5 pumps (4+1 reserve).
  • Sand filtration through 5 (4+1 reserve) metal filters.
  • Conditioning of filtered water through dosage of dispersant / anti-fouling agent.
  • Safety filtration systems composed of 5 pressure containers with a selectivity of 5 microns.
  • Metabisulphate dosage to neutralise the oxidation agent injected in the previous phase.
  • High pressure pumping and energy recovery using 5 turbo-pump groups (4+1 reserve) composed of a pump, motor and Pelton turbine.
  • 4 Frames with 101 pressure tubes per frame and 7 membranes per pressure tube.
  • 45% conversion.
  • Remineralisation through lime and CO2.
  • Treated water tanks of 2,500 m3 and 16,500 m3.
  • Dilution of the rejected brine with dilution of 4:1 with sea water to avoid any impact on the Poseidonia oceanica (sea grass habitat).

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