The given illustration displays the process of converting organic waste into fertilizer. Overall, there are five steps in total, which can be categorized into two main phases: pre-processing and composting.
In the pre-production stage, a plastic container, which has the capacity of two cubic meters, is punctured to create three ventilation holes on each side to facilitate proper airflow. Inside the container, three distinct components including newspaper, grass and food waste are respectively layered into each 15-cm tall pile. Following this step is the concoction process in which nitrogen and hot water are added to the aforementioned mixture, triggering a chemical reaction that catalyzes the decomposition.
Once the container is sealed by a lid, the decay process commences. During this stage, a substantial amount of heat is generated and released through multiple air vents of the container due to the chemical reaction where organic materials begin to break down. After a period of six months, the fully processed compost can be collected and utilized as fertilizer for gardening purposes.