Task 1. The diagram below shows how a simple water filter is constructed and how it functions to produce clean drinking water. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The picture depicts the construction and function of a rudimentary

water

filtration system, designed to meet the need

of

Change preposition

for

show examples

drinkable

water

.

Overall

, the purifying system can be set up easily by basic

equipments

Change the wording

equipment

types of equipment

pieces of equipment

show examples

and natural materials in just

some

Correct determiner usage

a

show examples

few steps which

are commencing

Wrong verb form

commences

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with the intake of raw

water

and

ending

Wrong verb form

ends

show examples

with the potable

water

being ready for consumption.

Firstly

, a

tank

and a storage drum are placed adjacent to each other and interlinked by a connecting hose. The former is positioned higher than the latter to make sure that

water

can flow through the pipe into the storage under the effect of gravity. The upper part of the initial

tank

is covered by a thin lid,

while

the lower portion is filled with three layers of purifying materials, namely sand, charcoal,

gravel

Correct word choice

and gravel

show examples

. The second drum is hollow and watertight, working as a reservoir for filtered

water

with a tap at the bottom of it. The process begins with untreated

water

being poured into the purifying

barel

Correct your spelling

barrel

. The

water

then

flows respectively through the layers of sand, charcoal and gravel. Once the

water

travel

Correct subject-verb agreement

travels

show examples

to the bottom of the first

tank

, mostly impurities and contaminants are captured, facilitating the purification process.

Subsequently

, the purified

water

is directed to the second

tank

, being stored and ready for consumption via a tap.