The discharge of large amounts of manure has already affected the sustainable development of the environment, so the issue of manure treatment is imminent. In the face of such a large amount of fecal pollution and the rapid development of animal husbandry, it is necessary to conduct harmless treatment of fecal pollution in dairy farms. The following are several methods to help some enterprises effectively handle fecal pollution to achieve good economic benefits. At the same time, I hope to provide some theoretical basis for the treatment of cow manure.
Currently, livestock production has caused serious environmental pollution, especially the waste from large-scale cattle farms. Due to the fact that the fecal output of a cow is equivalent to the total fecal output of about 20 people, the correct and efficient treatment of feces has become an urgent issue to be resolved.
The discharge of large amounts of manure has already affected the sustainable development of the environment, so the issue of manure treatment is imminent. In the face of such a large amount of fecal pollution and the rapid development of animal husbandry, it is necessary to conduct harmless treatment of fecal pollution in dairy farms. The following are several methods to help some enterprises effectively handle fecal pollution to achieve good economic benefits. At the same time, I hope to provide some theoretical basis for the treatment of cow manure.
1. Harmless treatment and resource utilization of feces.
If properly converted, cow manure can be converted into valuable agricultural fertilizer or animal feed. The main methods of fertilizer recovery include:
① Fertilization and utilization. Converting manure into ecological fertilizer or adding certain substances to make it a soil remediation agent is also the most effective method at present.
② Feed utilization rate. It mainly refers to the processing of leftovers from cow dung processing for feed. However, some experts do not advocate using this method because of the relatively high risk of disease and environmentally friendly raw materials in cattle farm waste.
③ Energy utilization. Can be used in biogas and power generation engineering systems.
2. Special treatment methods for cow dung
How to collect, store, and transform cow dung on a cattle farm is a very important part. Failure to convert cow dung in a timely manner can lead to environmental pollution, soil degradation, and other problems. Therefore, effective methods should be taken to treat feces.
①Wet and dry separation. Dry and wet separation of cow manure is conducted, and it is divided into liquid discharge and solid discharge.
②Build biogas digesters. Build a matching biogas tank based on the number of cattle and liquid emissions from the cattle farm. Liquid emissions such as cow urine and flushing water enter the biogas digester to produce biogas for daily use, and biogas slurry is used for sprinkler irrigation and fertilizer application in planting and ranching.
③Cultivate earthworms. Solid emissions such as cow dung are used to cultivate earthworms. Before feeding, the cow dung pile is integrated into a ridge shape to serve as a feeding bed, and then earthworm seeds are placed. After 7 to 10 days, earthworms are collected using their photophobic properties and then processed.
3. Treatment method of feces from free-range households
Individual families can collectively build a manure treatment plant and collaborate with local crop growers to centrally treat manure. This not only facilitates the disposal of manure from cattle farms, but also improves crop yields through the production of fertilizers. The biogas produced can be used in people's daily life. Individual households can also reuse manure as fertilizer for agricultural crops.
Analysis of social and ecological benefits. Through the dry and wet separation of cow manure, liquid emissions enter the biogas digester for anaerobic fermentation, and the biogas is recycled for cattle farms to boil water and cook. Lighting, etc., while biogas slurry and biogas residue are high-quality farmyard fertilizers that are used for planting pastures and fertilizing, not only saving fertilizer, but also achieving "zero emission" of pollution. The construction of biogas digesters not only provides harmless treatment of wastewater, but also provides clean energy. At the same time, we should increase income, protect the ecological environment, improve agricultural living conditions, promote efficiency gains in agriculture and animal husbandry, increase farmers' income, and promote sustainable development of the rural economy.
At the same time, farmers have greatly increased the speed of local economic development through earthworm farming and grass planting, and have driven local farmers to become rich by working on farms. Local farmers have not only improved their living conditions but also purified the surrounding living environment through hard work such as working in cattle farms, planting forage grass, and raising earthworms. This can make nearby farmers no longer need to endure the stench of cow dung, and have a good economic income to improve their living standards.
Through harmless treatment of fecal waste, cattle farms can be comprehensively developed and utilized. Liquid manure can be used to produce biogas as a living fuel for people, and biogas residues can be used for planting crops and fertilizing. Solid emissions from feces can be used for farming.
Conclusion: While disposing cow dung, transforming garbage into usable resources not only effectively solves the pollution problem of cattle farms, but also creates many high-quality raw materials for other fields, bringing economic benefits. It not only solves the problem of crop fertilizer, but also effectively protects the environment where people live, realizes an ecological cycle, increases farmers' income, and achieves sustainable development of the rural economy.
Post time: Jun-27-2023