The provided diagram illustrates the stage-by-stage process of how a modern landfill is formed for household waste.
Overall, the process consists of three main stages – construction, use, and closure – beginning with some industrial features transforming a natural rock into a man-made hole and culminating in the closure of the landfill site.
Initially, during the construction stage, a large man-made hole is dug into the natural rock. This is followed by placing clay and synthetic lining to form a double layer at the bottom of the hole, alongside five round drainage pipes and a rectangular drainage tank.
After that, the constructed hole is filled with household waste delivered by trucks. As the rubbish compresses, liquid waste drains through the pipe system. In the closure stage, the landfill is covered by a thick clay cover to seal the waste completely. Ultimately, a gas pipe is installed deep into the waste in order to extract excessive gas gathered there.
