Al Zawrah desalination plant in Emirate of Ajman The Al-Zawrah desalination plant in the Emirate of Ajman is operated by Cadagua and has already produced the first 3 million m3. The contract for the plant was awarded to the Ferrovial Agroman subsidiary at the end of 2010 by the Federal Electricity and Water Authority (FEWA), which is responsible for the supply of drinking water and electricity to the North of the United Arab Emirates. The contract, worth €41 million, includes the design, manufacture, supply, construction, installation, testing and commissioning of the plant. The facility has a treatment capacity of 45,560 m3/day, the equivalent of the daily water consumption of a population of around 230,000.
The plant is located in an area called Al Zawrah, within the FEWA Complex of Facilities in the Emirate of Ajman. It is situated around 370 m from the coastline and occupies a surface area of approximately 12,000 m2. The Al-Zawrah III desalination plant is designed for a daily output of 10 million imperial gallons (45,460 m3/d) of drinking water through a process of reverse osmosis.
This is the equivalent of 16.5 cubic hectometres per annum. The plant is equipped with energy recovery devices and features leading-edge pre-treatment, including DAF (dissolved air flotation) and ultrafiltration.The plant is made up of a number of buildings: one to house the collection pumps, one for the dissolved air flotation system; another large building for ultrafiltration pre-treatment, osmosis membranes and all ancillary services, and a further building to house the chemical products required for treatment of the water. These buildings are complemented by a number of electrical and control rooms, as well as laboratories, offices and workshops. Seawater is collected directly from the sea, without the use of intermediate chambers, by means of two seawater intake pipes, with a length of 1,200, of which 800 m is subsea.A cylindrical screen is arranged at the mouth of each intake to prevent the entrance of fauna and bulky or foreign elements.
Article published in: FuturENVIRO April 2015