name the three stages in the process of water treatment.
sedimentation,filtration and chlorination.
1 of 8
describe the sedimentation stage
water is first stored in setting tanks, where larger particles sink to the bottom. Water can be drawn off leaving the sediment behind.
2 of 8
describe the filtration stage
the water is then passed through a system of filters which remove small particles.But bacteria can pass through the filters.
3 of 8
describe the chlorination stage
chlorine is added to the water which kill the bacteria leaving the water fit for delivery.
4 of 8
describe the importance of conserving water
we need a supply of drinking water-humans can only live for about a week without any water.Water is needed on farms to grow food.Amount of water-important in any habitat so if reduced habitat will change etc.Water important in many industrial proce
5 of 8
name ways of conserving water
having a shower rather than a bath,not letting water run unnecessarily e.g. when cleaning teeth.repairing dripping taps.collecting rainwater to use for watering the garden or washing a car.
6 of 8
is all water on our planet clean?
water in rivers and oceans polluted.-dumping of sewage plastics etc are having an effect on the quality of the water in the water cycle.
7 of 8
finished:)x
x
8 of 8
Other cards in this set
Card 2
Front
describe the sedimentation stage
Back
water is first stored in setting tanks, where larger particles sink to the bottom. Water can be drawn off leaving the sediment behind.
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