The given diagram depicts the structure and process of a contemporary landfill designated for domestic waste disposal.
Overall, the process encompasses three main stages: construction, use, closure, all of which are conducted in an environmentally responsible manner.
In the construction stage, a large and deep pit is excavated into natural rock to provide space for waste disposal. The pit is lined with a layer of clay and an unspecified synthetic material. At the base of the pit, a drainage tank and a network of pipes are installed to prevent the contamination of the surrounding soil.
During the usage stage, household waste is deposited into the pit. When waste accumulates, it seeps to the bottom, where the drainage tank and pipes are located, to prevent any resultant liquid from escaping into the environment. In the closure stage, when the pit reaches its capacity, it is sealed with a clay cover to block off any additional waste or environmental exposure. A pipe is built to channel gas emitted from the decomposition of the waste, ensuring proper ventilation and maintaining environmental safety.