Sunday, 5 April 2020

Clay water filter for safe drinking water

Short description on clay water filters

Water filters are used to clean water of bacteria that can make people ill. This means that all drinking water can be cleaned and that the water does not need to be boiled before drinking. This filter is made using bowls of clay which have been fired in an oven. These bowls have a special base which is different than the rest of the bowl. Water can pass slowly through this base.


Installation of clay water filter

 * Take Two clay pots for water filter
 * Before using pots clean them.
 * Place the empty clay pot with tap on ground.
 * Add water which need to be filtered in another pot and place it on the pot.
 * Place the lid on the upper clay pot.
 * After few hours, you can open the tap for drinking water.

Why clay for Water filters

Clay is made up of millions of very small particles which are joined together. The clay particles when joined together, form even smaller holes between them. Water will pass through these holes very slowly. The size of the holes depends on what type of clay is used, different types of clay have different sized particles and different sized holes between them. Unclean water carries a lot of bacteria, but the size of the bacteria is larger than these holes at the base of the clay bowls. As the water flows through the holes in the clay, the bacteria becomes separated from the water. This makes the water safe enough to drink. Hence, Clay is a good material to be used as a water filter.

These clay water filters must be fired in a proper oven to work well. The temperature of the firing also affects the size of the holes, because clay shrinks as it is fired, so the holes become even smaller. The effect can be as follows:

• If the holes in the clay are too small, the water will take a long time to flow through.
• If the holes in the clay are too large, bacteria will not be stopped and the water will not be clean

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