Fermentation tank ferments pig manure into organic fertilizer

Environmental protection is the cornerstone of the development of the livestock and poultry breeding industry, and it is also the lifeline of the breeding industry. It is of great significance to effectively and reasonably dispose of pig manure and utilize it as a resource to reduce environmental pollution. The traditional fermentation method for livestock manure is composting. It can be divided into tank fermentation and stack composting, both of which can effectively treat organic manure and quickly treat livestock manure. However, during the decomposition process using these two methods, a large amount of polluting gases such as carbon dioxide, carbon monoxide, methane, etc. will be released, resulting in environmental pollution. With the increasingly high national requirements for environmental impact assessment in the aquaculture industry, building beautiful villages and improving the living environment have become mandatory topics, and doing a good job in protecting the ecological environment is of great significance.
Currently, there are nine common modes of pig manure resource utilization, and here are four common modes. The first is the "manure collection shed, sedimentation tank+planting" mode, which is cleaned by machine or manual, and then transferred to the manure collection shed for composting. Adding auxiliary materials to the manure collection shed for aerobic fermentation or anaerobic composting can be used as compost products for organic fertilizer for crops. Pig manure and urine are transferred through pipelines to a sedimentation tank for sedimentation, which is used to irrigate crops. The treatment cost of this method is relatively low, but in summer, it is easy to produce a bad smell, breed a large number of diseases and insects such as mosquitoes and flies, and the fermentation is not thorough, which can easily cause crop root burning and yield reduction.
Secondly, the treatment of pig manure is often used in the form of "biogas digesters, manure collection sheds, and planting". Pig manure is first collected in batches and transferred to a manure collection shed for fermentation. The mixture of pig urine is transferred to a biogas tank through a sewage ditch for anaerobic fermentation. The biogas slurry can be used for crop irrigation, biogas residue can be used as organic fertilizer, and the biogas generated by fermentation can be used as renewable energy for domestic heating and power generation. This method makes full use of pig manure resources and effectively utilizes pig manure. However, the cost of biogas treatment is high, and there are significant safety hazards in the repair and inspection of biogas digesters, with a low popularity.
The third mode is the "fermentation bed+planting" mode, where a mat with fermentation bacteria is laid inside the enclosure, and feces and urine are excreted on the mat. After being arched and trampled by livestock and poultry, it is thoroughly mixed. Over time, pig manure is fermented into organic fertilizer. This mode can effectively avoid the trouble of frequent cleaning of feces and reduce artificial investment, but it is necessary to control the breeding density. In summer, the phenomenon of high temperature and high humidity is prone to occur in captivity.
The fourth mode is the "fermentation tank+organic fertilizer" mode. After pig manure is collected, it is transferred to the organic fertilizer fermentation tank. This equipment adopts a vertical closed tank structure and the principle of aerobic fermentation. It is suitable for the treatment of different feces, livestock and poultry carcasses, kitchen garbage, and domestic sewage sludge. The bucket elevator lifts the organic waste and automatically puts it into the tank. It is evenly mixed in the tank through mixing blades. Warm air accelerates aerobic fermentation and water evaporation. After an average of 7 days, Organic waste is converted into high-quality organic fertilizer. This method is mainly carried out in a closed space without pollution, and livestock manure can be quickly converted into organic fertilizer.
To sum up, there are various ways to treat livestock and poultry manure, but in the final analysis, it is how to realize the resource utilization of livestock and poultry manure. Compared to the first three modes, the organic fertilizer fermentation tank is relatively simple. With simple operation and high resource utilization, it is currently a good choice for pig manure treatment.