Desalination is the process of removing salt from sea water so that it can be used for drinking, or for watering crops. Define desalination (noun) and get synonyms. What is desalination (noun)? desalination (noun) meaning, pronunciation and more by Macmillan Dictionary. Removal of salt (sodium chloride) and other minerals from the sea water to make it suitable for human consumption and/or industrial use. The most common desalination methods employ reverse-osmosis in which salt water is forced through a membrane that allows water molecules to pass.
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Desalination: Definition & Process
desalination definition Key Desalination Processes Desalination is used in areas where fresh water is scarce, like on ships in the ocean or in water-starved areas like the Middle East or Africa. When large quantities of fresh water are desalination definition, desalination might not be as cost effective as using fresh water sources because the process is very energy intensive.
But if an area is scarce of water, desalination might prove more economical than transporting water from very far away. The removal of dissolved minerals, or salts, from water can occur through different processes. Salts are usually left behind when water changes from one phase to another.
But salts can also be removed from water without any phase change. Phase Transition Processes When you freeze salty water, an interesting phenomena occurs. The water freezes, but the salts remain behind. You don't get salty ice cubes.
Desalination - Wikipedia
You get ice cubes that taste like ice cubes! The same thing happens when you boil or distill water. When water changes from liquid to a gas, the salts are too desalination definition to carry in gas form, and they remain behind.
You get salt-free steam that you can later collect by allowing the steam to condense on a cold surface. This is the process behind a solar still, which is a device that uses energy from the sun to evaporate water and has a surface that the water vapor can condense on.
The condensed water that's collected is pure and free of any minerals. Desalination desalination definition control pressure, temperature and brine concentrations to optimize efficiency. Nuclear-powered desalination might be economical on a large scale.
Unfortunately, that includes some of the places with biggest water problems.
Thus, it may be more economical to transport fresh water from somewhere else desalination definition to desalinate it. In places far from the sea, like New Delhior in high places, like Mexico Citytransport costs could match desalination costs.
Desalinated water is also expensive in places that are both somewhat far from the sea and somewhat high, such as Riyadh and Harare. By contrast in other locations transport costs are much less, such as BeijingDesalination definitionZaragozaPhoenixand, of course, coastal cities like Tripoli.
In Decemberdesalination definition South Australian government announced it would build a seawater desalination plant for the city of Adelaide, Australia, located at Port Stanvac.
The desalination plant was to be funded by raising water rates to achieve full desalination definition recovery. The facility would producecubic metres of drinking water per day, enough to supply abouthomes. The board of directors of Tampa Desalination definition Water was forced to buy the plant from Poseidon in to prevent a third failure of the project.
The facility reached capacity only in desalination definition These structures can have the same impacts to the environment as desalination facility intakes[ according to whom? According to EPA, water intake structures cause adverse environmental impact by sucking fish desalination definition shellfish or their eggs into an industrial system.