Fermentation and turning is a core step in organic fertilizer production. Its purpose is to replenish oxygen to the materials, regulate temperature and humidity, promote microbial reproduction, ensure thorough decomposition of raw materials, and improve the quality of organic fertilizer. Currently, commonly used fermentation and compost turning equipment on the market can be mainly divided into the following categories based on the operating scenario, production capacity, and material characteristics, to suit different production needs.
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Trough-type compost turners are the mainstream equipment in large-scale organic fertilizer plants. They are track-type structures and require pre-set fermentation troughs for operation. Their turning depth can reach 1.8-2.5 meters, with a large and uniform processing capacity. They can achieve continuous operation through PLC automatic control, odor is easily collected, and they are unaffected by weather. They are suitable for standardized production with a capacity of tens of thousands of tons. However, initial investment in infrastructure costs is required, the site is fixed, and modifications are difficult.
Windrow compost turners emphasize flexibility and convenience. They do not require the construction of fermentation troughs and can operate in open areas, greenhouses, or irregular sites, even adapting to complex terrains such as mud and slopes. It features a self-propelled design, allowing for remote operation by a single person and convenient expansion. However, its turning depth is relatively shallow, only 1-1.5 meters, limiting its capacity, and its open-air operation is significantly affected by weather conditions.
The large wheel compost turner is a highly efficient piece of equipment in large-scale organic fertilizer production. Its core utilizes a large-diameter disc structure paired with high-strength turning teeth, making it suitable for large-scale windrow fermentation. It has a wide working width, covering a large area in a single turn, with a turning depth of 1.2-1.8 meters. This allows for rapid turning of deep materials to the surface, ensuring sufficient oxygen contact and effectively shortening the fermentation cycle. This equipment can adapt to windrows of varying widths and is highly adaptable to different materials, handling both loose and moderately moist viscous materials. It boasts high stability and a low failure rate, making it suitable for medium and large-scale organic fertilizer plants. The only drawback is its large size, requiring a certain degree of flatness in the work area.
Furthermore, chain type compost turning machines are suitable for large-scale processing of highly moist and viscous materials, offering strong turning force and high efficiency, and multiple tanks can be used together. Tank fermentation equipment, on the other hand, emphasizes environmental friendliness and high efficiency, operating in a fully enclosed environment with no pollution and a short fermentation cycle, but its investment and maintenance costs are extremely high.
Choosing the right compost turning equipment requires considering the production scale, site conditions, and material characteristics. These devices each perform their specific functions, solving the pain points of low efficiency and uneven composting associated with traditional manual turning, promoting the development of organic fertilizer production towards large-scale, automated, and standardized processes, and providing strong support for the green and sustainable development of agriculture.
