Arucas Moya SWRO

Due to the economic and social expansion, and in order to adapt to the growing water needs, in 1998 the Ministry of the Environment awarded ACCIONA the expansion of the Arucas-Moya desalination plant, consisting of the construction and commissioning of a new reverse osmosis frame and the improvement of the old installation.

In 2006, ACCIONA was awarded a new expansion of the plant, consisting of the increase of IDAM production to 15,000 m³/day, without the need to expand the civil works of the facility and incorporating the latest technology in energy recovery . In addition, this contract has a 15-year exploitation concession period.

The achievement of this work now allows a desalination plant in the forefront of the technique, which has a production capacity of 15,000 m³/d capable of meeting the needs and water demands of the area.

General information

Entity: Insular Council of Aguas de Gran Canaria
Location: Arucas, Gran Canaria. Spain
Flow: 15,000 m³/day
Type of contract: EPC + O&M
Population: 100,000 inhabitants

Key aspects

Design

Production: 2 x 7,500 m³ / day
Salinity: = 700 μS / cm
Specific consumption: 3.84 kWh / m³

Installation

Uptake: 6 wells + pitcher
Filtration: 1st Stage: 4 sand filters, 2nd Stage: 4 cartridge filters
Chemical Dosage: Sulfuric acid, sodium hypochlorite and sodium bisulfite
Turbo pumps: 2 (TBB-ERI) + 1 (TBB-Pelton Turbine)
Racks: 2
Membranes: 1,162 pcs (high rejection and low energy)
Remineralization: Carbon dioxide + calcium hydroxide
The capture of seawater is carried out through 6 coastal wells and
Throughout the process, the dosage of sulfuric acid, sodium hypochlorite and sodium bisulfite is necessary
The plant has a filtration system composed of 4 sand filters and 4 cartridge filters
It has 2 groups of high pressure plus 1 reserve
A booster pump is installed with a set consisting of 10 pressure exchange equipment, ERI PX-220, in each line, for energy recovery. In the high pressure reserve group, the Pelton turbine system is maintained
The production of the plant is achieved through 2 racks of reverse osmosis with a capacity of 7,500 m3 / d, respectively
It has a remineralization system based on the injection of carbon dioxide and lime hydroxide, which makes it possible to adapt the Langelier index to the requirements prescribed by the R.D. 140/2003

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