how is water purified before it is supplied to our homes ? wrote the different steps in sequence. class 9 ncert
Answers
Answer:
yess itis puribied
Explanation:
1st step the water is coming from ocean and then the water is supplied to the water tank and then it is purified with the help of machines hope it help
There is 5steps for water purification.
Screening, coagulation, sedimentation, filtration and disinfection.
1) Screening: Water from the river or land passes through the screen as it enters the water treatment plant.
2)Coagulation: This floc pulls the dirt particles, making it eventually heavy enough to sink to the bottom of the water storage tank.
3)Sedimentaion: Water and floc flow into moisture deposition. When the water sits there, the heavy floc settles down on the bottom, where they remain until the removal.
4)Filtration: Water passes through a layer of gravel, sand and may be charcoal, which works to filter the remaining particles. The pebble layer is usually about 1 foot and the sand layer is about 2½ feet deep.
5) Disinfection: There is 5steps for water purification. Screening, coagulation, sedimentation, filtration and disinfection.