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The image depicts a diagram illustrating the process of desalination, where saltwater is taken from the sea, passes through pre-treatment filters, gets forced through a membrane at high pressure, undergoes post-treatment with lime, chlorine, and fluoride, is stored, and finally integrated into the water supply system, while byproducts such as filter backwash and seawater concentrate are returned to the sea; a close-up view shows water molecules passing through a filter while impurities and salt are blocked.
Given the complexity of the image, the above description may not be entirely accurate.
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The illustration below demonstrates how sodium chloride is removed from sea water to produce purified water.
First of all, the saltwater is taken from sea then carried to pre-treatment filter, where it is removed impurities from water by this. After this the impurities are returned to the sea. From this, pre-treated water is produced.
Afterwards, this liquid small molecules are forced through the membrane to the next stage. Big molecules of salt and impurities can not pass through these small holes, consequently they are returned to the sea. The water is treated with chemicals then, drinkable water is stored before distributed for use.
The water is drinkable,because the impurities and salt are removed from them and it is treated by chemical.
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