Equivalent Population

Designed and constructed by ACCIONA

Designed and constructed by ACCIONA, with a capacity to produce 10,000 m3/day of drinking water through the reverse osmosis system.

In 1999, an extension to the facility was built increasing its capacity to 25,000 m3/day, thus guaranteeing the supply of water to 100% of the Community (100,000 inhabitants). In November 2002, a reconversion of the facilities was completed allowing for a production of 33,000 m3/day and thus tackle the predicted increase in demand.

General Information

  • Project: Southeast SWRO
  • Entity: Association of Southeast Gran Canaria.
  • Location: Santa Lucía, Gran Canaria. Spain.
  • Flow: 33,000 m3/day.

Key points

  • Seawater catchment is carried out using 17 wells with 150 m depths.
  • Dosage of hypochlorite, ferric chloride and sulphuric acid.
  • Pumping through 2 vertical centrifuge pumps with a flow of 550 m3/h.
  • The plant has 4 sand filters (after the first expansion).
  • The safety filtration has 4 cartridge filters (after the first expansion) plus one in reserve.
  • Two high pressure groups plus one reserve group with divided chamber multi-stage pumps, 950 kw motor and Francis turbines for energy recovery.
  • For reverse osmosis, it has 4 frames with a capacity of 7,500 m3/day.
  • Reconversion. Since the marine aquifer was at its limit, the reconversion consisted of increasing the conversion factor, meaning obtaining more product flow from the same supply flow (8,000 m3/day).
  • Remineralisation system based on the injection of CO2 and Nutritious lime Hydroxide, which allows for the adaptation of the pH and the hardness of the product water.

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