Saline water


Saline water

Saline water is a general term for water that contains a significant concentration of dissolved salts (NaCl). The concentration is usually expressed in parts per million (ppm) of salt.

The salinity concentration level used by United States Geological Survey classifies saline water in three categories. Slightly saline water contains around 1,000 to 3,000 ppm. Moderately saline water contains roughly 3,000 to 10,000 ppm. Highly saline water has around 10,000 to 35,000 ppm of salt. Seawater has a salinity of roughly 35,000 ppm, equivalent to 35 g/L.

Because of scarcity of fresh water in some areas of the world, saline water is used by desalinating it. For example, in Colorado, water having up to 2,500 ppm of salt is used for irrigating crops. Saline water, known as saline, is also used in medicine as a sterile solution.

Normally, moderately or highly salinated water is of little use to humans. Humans cannot drink salinated water directly, nor is it suitable for irrigating crops.

Some industries also make use of saline water, such as mining and thermoelectric-power.

Saline water use in the United States

In the United States, 14 percent of all water used in 2000 was saline. [http://ga.water.usgs.gov/edu/salineuses.html Uses of saline water] , USGS] Almost all saline withdrawals, over 92 percent, were used by the thermoelectric-power industry to cool electricity-generating equipment. About three percent of the nation's saline water was used for mining and other industrial purposes.

Due to their proximity to the Atlantic and Pacific Oceans, states near the coast make the most use of saline water. Almost 40% of all saline water use in 2000 occurred in California, Florida, and Maryland.

The use of saline water, as with freshwater, has been trending downward since a peak in 1968. But, in the period between 1950 and 1968, the use of saline water increased at a much higher rate than freshwater use.

References


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • saline water — sūrus vanduo statusas T sritis ekologija ir aplinkotyra apibrėžtis Gamtinis vanduo, kurio mineralizacija yra nuo 25 iki 50 g/l (pagal kitas klasifikacijas – nuo 10 iki 35 (50) g/l). atitikmenys: angl. saline water; salt water; sea water vok.… …   Ekologijos terminų aiškinamasis žodynas

  • saline water —    Water that generally is considered unsuitable for human consumption or for irrigation because of its high content of dissolved solids. Generally expressed as milligrams per liter (mg/L) of dissolved solids, with 35,000 mg/L defined as sea… …   Lexicon of Cave and Karst Terminology

  • saline water — noun : water containing salt; especially : mineral water containing sodium chloride, sodium sulfate, and magnesium sulfate …   Useful english dictionary

  • Saline (medicine) — Saline solution for intravenous infusion. The white port at the base of the bag is where additives can be injected with a hypodermic needle. The port with the blue cover is where the bag is spiked with an infusion set …   Wikipedia

  • Water supply and sanitation in Saudi Arabia — differs from most other countries in three significant aspects. First, it relies almost exclusively on two sources that are absent in most other countries: desalination and fossil water. Second, given the substantial oil wealth of the country,… …   Wikipedia

  • Saline — may refer to: * Salinity salt content of a solution ** Saline water water containing significant concentration of salts * Soil salinity salt content of soil * Saline (medicine) a liquid with salt content to match the human body * Saline bath form …   Wikipedia

  • Water distribution on Earth — Contents 1 Distribution of river water 2 Variability of water availability 3 See also …   Wikipedia

  • Water resources — A natural wetland Water resources are sources of water that are useful or potentially useful. Uses of water include agricultural, industrial …   Wikipedia

  • saline — [[t]se͟ɪlaɪn, AM liːn[/t]] ADJ: usu ADJ n A saline substance or liquid contains salt. ...a saline solution. ...warm, saline water. Derived words: salinity [[t]səlɪ̱nɪti[/t]] N UNCOUNT The Atlantic Ocean had undergone changes in temperature and… …   English dictionary

  • Water crisis — For other uses, see Water crisis (disambiguation). Deforestation of the Madagascar Highland Plateau has led to extensive siltation and unstable flows of western rivers. Water crisis is a general term used to describe a situation where the… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.