Water is vital for life, but must be cleaned in order to be consumed safely. Today it is not always possible to drink water straight from the reservoir. It should be treated to become potable. The next video shows the purification process of drinking water.
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Water weeds.
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Large stones.
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Pieces of wood.
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Tiny particulates.
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The water is cascaded down a tower so that air enters.
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The water is sprayed to expose it to the air.
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All of the above.
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Sand and seaweed.
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Fine pieces of matter and a coagulant.
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Activated carbon and organic materials.
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Pieces of wood and large stones.
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Metals and salts
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Organic materials
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Stones
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Weeds
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Remove organic materials.
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Remove small particles.
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Disinfect the water of bacteria.
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Balance the acidity and alkalinity of the water.
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All of the above
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To prevent pipe corrosion, which can occur if the water is too acid.
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To prevent the formation of limescale in the pipes if the pH is too alkaline.
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In this video, students will learn about the various stages of the treatment of potable water from storage reservoirs. At each stage of the process, a vertical section shows the water contents – the type and size of the particles, and how they are separated from the water. The video illustrates a daily life application of the mixture separation process. The questions address the purpose of water purification and the particles separated at each stage of the process. Estimated time for the activity: 5-6 minutes
Separation process, water solubility
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