The illustrations provide information about a developed landfill for household pollutants.
Overall, the design includes three particular stages which are construction, use and closure. This process starts from an original dumpsite and finishes with the gradual reduction of wastes.
In the first step, an artificial storage is prepared underground which is right on a layer of natural rock. After that, a thick coverage of clay is put in the bottom of the hole, being the foundation for a drainage system. This system contains a filter tank with some drainage pipes, with the pipes leading to the outside of the man-made hole. In addition, the whole construction is covered by a synthetic substance.
Moving to the usage stage, when the residential waste is discarded into the disposal area, the fermentation process soon begins with the leakage of waste liquid, which therefore will be stored in the drainage tank. After undergoing layers of clay and natural rocks under, this mixture is considerably filtered and infiltrates into the soil. In the final step, with the gradual reduction of the pollutant in the hole, a substantial layer of clay is filled on the top of the tank, preventing gases from being emitted into the atmosphere. This gas follows the pipes, escaping to the soil outside.