The diagram below shows how salt is removed from sea water to make it drinkable. Summarize the information by selecting and reporting the main features and make comparisons where relevant.

It is clear that

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the production of filtered

water

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from the

sea

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requires a series of stages, including the use of salt

water

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. The diagram shows the process involved in the production of how salt is removed from

seawaterwater

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seawater

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to make it drinkable. First of all, the salt

water

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is intaked by a tube from the

sea

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. After that, it is carried along to the pre-treatment filter, where it is filtered in a large

water

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tunk

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tank

to which filtered backwash is returned to the

sea

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. From

this

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, filtered

water

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flows

in

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into

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the second tank. At the next stage of the process,

water

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is forced through the membrane at high pressure , the

sea

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water

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concentrated and returned to the

sea

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. Following that, the purified

water

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is going to post-treatment with lime,chlorine and fluoride . The processed

water

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in the

last

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two steps of producion line , it is moved onto storage.

Then

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it is taken to the integrated

water

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supply system .