The diagram illustrates the process of producing compost, a type of natural fertilizer, from recycled organic waste.
Overall, the process consists of five main stages, beginning with the preparation of a plastic container and ending with the production of compost after several months.
In the first stage, a 2m³ plastic container is prepared by making several air holes on its sides to allow oxygen circulation. Next, layers of organic waste, including food scraps, grass, and newspaper, are placed inside the container until it is about one-third full.
After that, nitrogen and hot water are added to the mixture to promote bacterial activity and speed up decomposition. It is important that the water remains hot throughout this stage to ensure effective breakdown of the waste.
In the following stage, the container is sealed tightly with a lid to trap heat generated during the composting process. Finally, after approximately six months, the materials decompose completely and turn into compost, which can then be used as fertilizer in the garden.