Analysis on the current research situation of organic fertilizer fermentation tank

The traditional methods for treating livestock and poultry manure are mainly stack fermentation and tank fermentation, which have advantages and disadvantages. The advantage of both methods is that they can effectively treat livestock and poultry manure and reuse manure resources. However, in the process of decomposing manure, a large amount of polluting gases will be generated, resulting in environmental pollution. Harmless treatment equipment for livestock and poultry manure: The organic fertilizer fermentation tank conducts closed fermentation inside the tank, which can effectively reduce secondary pollution and improve and promote microbial metabolism. During the fermentation process, measures such as mixing and ventilation of materials are taken to achieve rapid fermentation of livestock and poultry manure. It has a short fermentation cycle, a high degree of mechanization, and reduces environmental pollution. It can also manually control the moisture, temperature, oxygen concentration, and other conditions of livestock manure during the fermentation process. The fermentation process is not affected by weather. Therefore, it is of great significance to study the organic fertilizer fermentation tank for livestock and poultry manure treatment equipment.
1、 Composition and working principle of organic fertilizer fermentation tank
The organic fertilizer fermentation tank is mainly divided into three parts, with a hydraulic station, a vortex air pump, a heating system, and a mixing shaft distributed on the lower base; The middle part of the tank is a double layer heat insulation tank. The inner wall of the tank is lined with 304 stainless steel plates, effectively extending the life of the tank and reducing the residue of decaying clinker. In the middle, there is an insulation layer filled with polyurethane foaming agent. The outer wall is made of thickened steel plates to support the tank and equipment automatic control systems, export devices, etc. The upper part is composed of weather sheds, detection platforms, ventilation facilities, and other devices. The auxiliary equipment is an automatic dump elevator, Exhaust gas filtration and deodorization system and heat exchange system device. During operation, the bucket elevator lifts the organic waste and automatically puts it into the tank. The organic waste is mixed evenly through stirring blades in the tank. A special heat exchanger uses the heat of exhaust gas to heat fresh air and allow it to enter the tank. Hot air is blown out of the holes on the blades, and the warm air accelerates the aerobic fermentation of the organic waste and the evaporation of water. After the material matures and degrades under the action of microbial agents, the hydraulic power system opens the blanking valve and uses a belt conveyor to output the fermented material. The gas discharged after fermentation is collected and blown through the deodorization system before reaching the standard.
The organic fertilizer fermentation tank adopts the principle of aerobic fermentation by aerobic microorganisms, which enables microorganisms to utilize the organic matter and residual protein in livestock and poultry feces and carcasses to rapidly reproduce under a certain temperature, humidity, and sufficient oxygen environment, thereby achieving harmless treatment of livestock and poultry wastes.
2、 Fermentation process of organic fertilizer fermentation tank
Taking the organic fertilizer fermentation tank produced by Bolong Animal Husbandry Machinery in Hebi City as an example, the fermentation tank processing process includes a mixing section, a high-temperature aerobic fermentation section, and an automatic material collection section. Among them, high-temperature aerobic fermentation is the most important part. It fully utilizes the activity of microorganisms in the feces to decompose organic matter, generating high-temperature piles of materials for decomposition, effectively killing pathogens, bacteria, and other harmful substances. During the fermentation process, the water content continues to decrease, and the volume decreases, thereby fermenting into organic fertilizer.
3、 Characteristics of Organic Fertilizer Fermentation Tank
Compared to traditional compost fermentation, organic fertilizer fermentation tanks have the following advantages: the tank body is closed, the fermentation process is not affected by the natural environment, preventing waste generated by fermentation from leaking out, and eliminating secondary pollution; The traditional fermentation method is greatly affected by the weather, and the fermentation in the fermentation tank is less affected by the external environment, which can ensure the fermentation throughout the year; The operation is simple, and the fermentation tank adopts electrical control, which is easy to learn and effectively saves labor costs.
To sum up, fermentation tank is an ideal treatment mode for treating livestock and poultry wastes, which can rapidly generate organic fertilizer, reduce secondary pollution, fully return organic fertilizer to the field, and form an environmental protection mode of green circular development.