You should spend about 20 minutes on this task. The diagram below shows how a modern landfill for household waste is designed. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The illustrations above show the transversal surface of a

landfill

, and they

also

display how to process household

waste

with the

landfill

. The design of the

landfill

evidently takes into consideration the stability of the

landfill

.

Additionally

, the design effectively balances the need to dispose of household

waste

and protect the environment. In the construction phase, workers dig out a

hole

which is supported by natural rocks to ensure stability. The wall of the

hole

is lined with clay and synthetic lining in order to prevent leachate from contaminating the surrounding soil.

Moreover

, there are drainage pipes at the bottom of the

hole

, which directly lead to a drainage tank for storing

waste

liquid. During the use process, workers cover the

hole

with a layer of clay after trucks dump household

waste

into it.

Due to

gases produced during

waste

decomposition, ventilation pipes are inserted into the clay cover to release gases from decomposition.