Develop a school policy to improve water management

Abstract

Desalination – turning salty water into drinking water C alled the ‘blue planet’ or the ‘water planet’ the Earth’s surface is 70% covered with water. Unfortunately, a very tiny percentage of that water is fit to drink. But what if we could make it drinkable? Cities are growing and more people are populating the Earth, requiring ever more water for drinking, cooking, washing and growing food, driving industry and generating electricity. This places increasing pressure on existing water supplies, pressing countries to look for alternative sources of water. Through the years this growing demand for water has led to the development of a sophisticated process called desalination which turns seawater or other brackish water (like salty groundwater) into water that is fit for drinking and other uses. Desalination used to be an expensive process that used a lot of energy, but improvements in the technology is making this a more attractive option, especially for coastal cities and towns. One of the remaining challenges is what to do with the brine (the waste that remains after treatment).

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