Question

Write the flow chart for purification of water at city water works.

Answer 1

》》》 water is collected in the reservoir
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》》》the water is sent to sedimentation tank to allow solids to settle
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》》》 it is then passed into 2nd tank that is loading tank, so that the suspended impurities are loaded to settle down as sediment
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》》》 Then water reaches the filtration tank


explanation

In filtration tank water passes through different layers of sand and gravel as shown in the above figure this is for adsorption of impurities.
The clear water reaches a chlorinated tank where water is mixed with bleaching powder/chlorine to kill bacteria and then supplied to houses.

Answer 2

Answer:

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