Question

desalination in UAE
please help if you are from UAE or know about UAE.

Answer 1

HI THERE!

HERE IS AN EXPLANATION ON :

Desalination in UAE

Uae's drinking water is obtained from desalinating the water from the seas. Drinking water is provided to the whole of UAE by desalination of sea water.

It is important for UAE to come to a desalination solution for long term water needs due to lack of freshwater sources in UAE.

The most efficient desalination plants today use reverse osmosis combined with preheating the water with waste heat from a power plant. And although they require heat, they can use the waste heat from other processes, such as thermal desalination plants and power plants. That allows them to produce fresh water with just low-grade thermal energy, and salt water.

HOPE THIS HELPS YOU!

:)

Answer 2

Answer:There are two sources of water in UAE: Desalinated seawater and groundwater. While groundwater is used for agriculture in Al Ain and Liwa, drinking water is provided entirely from desalinated seawater across the Emirate. In 2008, groundwater contributed 71% to total water demand for all purposes, desalinated water 24% and treated wastewater 5%.

Seawater desalination

There were eight seawater desalination plants in Abu Dhabi owned and operated by eight joint ventures: Tawilah A, Tawilah B, the five Umm al Nar plants and the Al Mirfa plant. These joint ventures between the government and foreign companies, which are allowed to own up to 40% of the shares, are called Independent Water & Power Producers (IWPPs). They operate under Build-Own-Operate (BOO) contracts with the government and their energy is supplied by fossil fuels. In the model green city called Masdar City, four smaller pilot desalination plants that will use solar power are nearing completion as of early 2015.

Groundwater

90% of groundwater in Abu Dhabi Emirate is saline, in some cases up to eight times as much as seawater. There are only two freshwater aquifers. Natural groundwater recharge is estimated at about 300 million cubic meters per year. Brackish groundwater is mostly used for the irrigation of date palms which are relatively salt-tolerant. Recharge dams have been built on wadis in order to prevent flood water to flow into the sea, recharging it instead to aquifers. Unplanned and uncontrolled groundwater withdrawals, especially for agriculture and forestry, total over 2,000 million cubic meters per year and have resulted in declining groundwater levels and quality.