**2. Desalination**

It can be defined as any process which removes excess salts and minerals from water (or) the chemical process of changing seawater into potable water are called desalination. These processes may be used for municipal, industrial or any commercial uses. In major desalination methods the feed water is treated and two streams of water are obtained


Salt water or feed water sources may include sea water, brackish, wells, surface (rivers and streams), wastewater, and industrial feed and process waters. With advancements in technology, desalination processes are becoming cost effective compared to other methods of producing usable water to meet the growing demands. The water that is obtained after desalination should be remineralised to be fit for human consumption. The concentrated brine obtained in desalination process must be disposed of in a proper manner.
