The diagram provides information about the construction of contemporary landfill that each household unit use in their daily lives to treat their waste
Overall, it is discernible from the picture that this linear man-made process contains four main stages, conmencing with the creation of a hole and ending with adding gases into it to decompose the waste.
In the first step, to create a pit, people manually dig the ground until an artificial cater is formed which contain the waste that household units discharge later on. Specifically, the pit that is shaped as prism, embeded into the ground which transcend a layer of natural rock. After that, the sides of this hole covered with a clay layer and then another layer of synthetic material is applied. On the bottom of the pit, a system of drainage pipes is installed and a drainage tank is placed underneath.
Next, trucks transport domestic waste to the landfill and release directly into the hole, subsequently, waste is decomposed and released a form of liquid into the drainage tank. After the hole exceeded its maximum capacity, the hold is completely shut by using a clay on the top. Finally, a pipe transfer natural gases into the sealed landfill to decompose the waste.