Water desalination

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More generally, desalination refers to the removal of salts and minerals from a target substance, as in soil desalination , which is an issue for agriculture. Saltwater is desalinated to produce water suitable for human consumption or irrigation. The by-product of the desalination process is brine. What are the methods of water desalination? How does desalination make fresh water?

How much does a water desalination plant cost? In ancient times, many civilizations used this process on their ships to convert sea water into drinking water. Today, desalination plants are used to convert sea water to drinking water on ships and in many arid regions of the worl and to treat water in other areas that is fouled by natural and unnatural contaminants.

Scientists are studying ways to use desalination on a global scale, but you can desalinate water yourself with just a mug, a bowl, and some sunlight. Water desalination processes separate dissolved salts and other minerals from water. Feedwater sources may include brackish, seawater, wells, surface (rivers and streams), wastewater , and industrial feed and process waters. Waves to Water prize will offer competitors up to $2. Improvements to thermal desalination technologies and low-cost, integrated designs for solar-thermal collection and storage can reduce the cost of desalination , while also enabling smaller and more portable systems.

IDE, the Israeli company that built Ashkelon, Hadera and Sorek, recently finished the Carlsbad desalination plant in Southern California, a close cousin of its Israel plants,. Solar desalination is a technique to desalinate water using solar energy. Sunlight may provide heat for evaporative desalination processes, or for some indirect methods, convert to electricity to power a membrane process. Salt dissolves very easily in water , forming strong chemical bonds, and those bonds are difficult to break. Energy and the technology to desalinate water are both expensive, and this means that desalinating water can be pretty costly.

The Carnegie Mellon team used 3D solid modeling to calculate. With the advances of desalination technologies, sea water has become an interesting water source to cope with fresh water shortage. This process can be applied wherever a reliable source of water is needed. With the large demand of salt in many geographical areas, producing salt. Thermal seawater desalination has been practiced on a large scale for more than years initially in the Middle East, where it is still the dominant desalting technology.

IDA Water Security Handbook. Our Planet 1team explains. Sea water desalination , in fact, is one of the most expensive sources of fresh water.

The water sells—depending on site conditions—for between $0and $5per acre-foot (the amount used by two five-person U.S. households per year).