Clear water from the sun
Pakistan will face a shortage of clean drinking water in the coming years. Pakistan is currently at the eighth position among the countries that bear the losses of climate change. In this regard, there is a need to clean available water using simple, easy and affordable technology.
In this case, the method of purifying water with sunlight is useful for domestic use. This method is called solar distillation. The method is very simple. You convert the water into vapor form by the sunlight which removes all the harmful particles, salts etc. from the water as well as the bacteria and germs from the ultraviolet rays in the sunlight. Then these vapors are cooled and re-liquefied and collected. This process makes the water completely safe for drinking.
You keep the water in a box with a glass lid as shown in the picture. You place the box in direct sunlight at an angle or a slight slope. At the bottom of the slope is a pipe that is connected to a vessel or storage. In the box, the water evaporates from the sunlight on the glass lid and here again drops down the pipe and collects in a separate container.
With such a solar distiller, you can purify at least six to seven liters of water on a clear day, which is enough to meet the needs of a typical household. You can make this kind of solar distiller at home.
Important Note: Normal water that we drink contains some minerals that are essential for human health, however water purified in this way is plain water without minerals. This water is perfectly safe to drink, however you can make up for any salt or mineral deficiency from other sources such as food.
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