The composting process and the importance of screening.

The goal of composting is to convert biogenic waste, such as green waste or organic waste, into a high-quality natural soil fertilizer for agriculture, horticulture, and soil production. Currently, the demand for composting is growing due to the high costs of chemical fertilizers and new demands for the quality of products produced. Green waste composting uses all waste generated in the maintenance of branches from urban roads, landscaping, horticulture, and agriculture. In order for these waste materials to reach an adequate level of quality, they go through several stages: The first stage is shredding. This part already has a huge influence on composting. It reduces its size so that the material is decomposed in a homogeneous manner, achieves a better air void ratio, and consequently increases the processing speed to reach the degree of compost. After shredding the raw material, the chopped material is placed in windrows to begin the aerobic conversion of the material. The material starts to gain temperature and the "rotting" process begins. At this stage, it is very important to turn the material so that there is aeration and control of the temperature and humidity of the pile, and therefore control the composting. After the material reaches the compost form, it can be sifted. Sieving serves to fractionate the particle size and also the important function of separating materials that are not yet composted, impurities such as plastics, irons, and stones. With the sieving of the compost, it is possible to generate a better added value to the material. The sifted compost is ideal for enriching the soil, especially in agriculture, and can be used as a substrate in gardens, flower beds, and vegetable gardens. A modern waste management involves materials separated by their particle size. Know Lippel's Rotary Sieves at: https://www.lippel.com.br/peneiras-rotativas/