The diagram shows the process of water treatment

The image above depicts the

process

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of

water

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treatment.

Overall

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, there are 10 stages from the source to the faucet in the houses.

The first step is

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intake screens that collect the

water

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by pumps, normally from a river or lake.

Then

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, there is a flash mix including oxidants and

poly aluminium

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polyaluminium

chloride. The next

process

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is flocculation, followed by a settling basin, where the

water

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rests for a

while

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to share some particles. Afterwards, the

water

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is chlorinated using chlorine and passes through a filter membrane that removes solids and other materials.

Then

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, the

water

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is disinfected with some chemical products

such

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as chlorine, lime, sodium hydroxide and fluoride. In the

last

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stage, the clean

water

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flows by another pump until reaches the houses' sinks, ready to be consumed. In all the steps, pipes and pumps

to

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apply

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pull the

water

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keeping it in a continuous

process

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.

This

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process

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is only for sweet

water

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. For salted

water

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, from oceans, there is another

process

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.