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The diagram below hows how salt is removed from sea water to make drinkable.

The diagram below hows how salt is removed from sea water to make drinkable. 6QKB
The process of desalination includes seven stages which is started to take saltwater from the sea and ended with transportation of purified water to the supply system. At first, the saltwater is taken from the sea and passed through the pre-treatment filter which at this point salt and impurities are removed. By doing this, the filter backwash is came back to the sea. During this time, water is forced through membrane at high pressure. It should be noted that at this stage seawater concentrate is returned to sea. Afterwards, water is post-treated by adding various chemical elements such as lime, chlorine and fluoride which help to make freshwater before it is sent to the storage and finally, it is piped into integrated water supply system to be used by people. In conclusion, the water which results from this process is clean and drinkable due to the fact the salt is removed.
The process of desalination includes seven stages which is
started
to take saltwater from the
sea
and ended with transportation of purified
water
to the supply system.

At
first
, the saltwater
is taken
from the
sea
and passed through the pre-treatment filter which at this point salt and impurities
are removed
. By doing this, the filter backwash is
came
back to the
sea
. During this time,
water
is forced
through membrane at high pressure. It should
be noted
that at this stage seawater concentrate
is returned
to
sea
. Afterwards,
water
is post-treated by adding various chemical elements such as lime, chlorine and fluoride which
help
to
make
freshwater
before
it is
sent
to the storage and
finally
, it
is piped
into integrated
water
supply system to be
used
by
people
.

In conclusion
, the
water
which results from this process is clean and drinkable due to the fact the salt
is removed
.
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IELTS academic The diagram below hows how salt is removed from sea water to make drinkable.

Academic
  American English
3 paragraphs
151 words
6.5
Overall Band Score
Coherence and Cohesion: 7.0
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    Vary your linking phrases using synonyms
Lexical Resource: 5.5
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  • Check your work for spelling and word formation mistakes
Grammatical Range: 6.5
  • Use a variety of complex and simple sentences
  • Check your writing for errors
Task Achievement: 6.5
  • Answer all parts of the question
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    Present relevant ideas
  • Fully explain these ideas
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    Support ideas with relevant, specific examples
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