In the prophase fermentation of organic compost production, turning-over is to turn and re-compost compost materials manually or by turner machine. Turning over not only ensures the oxygen supply of materials to promote the uniform degradation of organic matter, but also enables all materials to be turned over and re-stacked. Turning over not only ensures the oxygen supply of materials to promote the uniform degradation of organic matter, but also enables all materials to stay in the high temperature area of the compost for a certain time to meet the needs of sterilization and harmlessness of materials. The dump process can be carried out in situ, and the material can be moved from the site to the nearby or further places for re-stacking.
Strip stacking composting is the simplest method in organic fertilizer fermentation production. Generally, the size of strip stack is 2-6m wide, 1.5-3m high, and the length is not limited. This kind of specification is suitable for fermentation and turner machine turning materials. Windrow compost turner machine manufactured by Zhengzhou Tianci Heavy Industry Machinery Co., Ltd., which can be used in the production process of batch fermentation on the ground.
The turning times of the compost turner machine depend on the oxygen consumption of microorganisms in the material, and the turning frequency is higher in the early stage than in the later stage. The frequency of turning is also limited by other factors, such as maturity, type of turning machine, generation of bad odor, demand for space and changes in various economic factors. Generally, the heap is turned over once every three days, and the heap must be turned over immediately when the temperature exceeds 60 ℃.