Livestock carcase harmless disposal technology and biological organic fertilizer processing method

Abstract

The invention relates to a method for conducting harmless disposal on various livestock carcases through a method of comprehensively utilizing and combining the physical technology, the chemical technology and the biological technology, and processing the livestock carcases into biological organic fertilizer. The livestock carcases can be processed into biological organic fertilizer rick in nitrogen, phosphorus, potassium and various microelements by further conducting enzymolysis through protease, lipase and the like and conducting compost thermophilic fermentation and drying after conducting sterilization, deordorization and gelatinization through a high-temperature and high-pressure steam explosion technology with the livestock carcases as main raw materials and with crop straw as adsorption carriers and filler. The biological organic fertilizer has the beneficial effects of being capable of holding water and fertilizer and being released slowly, durable, and the like. The biological organic fertilizer can be safely and trustingly used for organic vegetables, fruit and other products due to the fact that the detection shows that the biological organic fertilizer is free of pathogenic bacteria and antibiotic drug residues. No emission of sewage or germs or drug residues or poisonous gas is caused in the whole process, and the dual effects of protecting the environment and utilizing resources to the maximum extent are achieved.

Description

technical field [0001] The invention belongs to the field of environmental protection technology and resource utilization, and specifically relates to a technology for harmlessly treating various livestock and poultry carcasses and processing them into bio-organic fertilizers by comprehensively utilizing a method combining physics, chemistry and biotechnology. Background technique [0002] With the increasing demand for meat, eggs, milk and other foods in our country, the scale of animal husbandry in my country has continued to grow, and ten thousand pig farms and ten thousand cattle farms are blooming everywhere. The death of livestock and poultry or the killing of livestock and poultry due to epidemic prevention frequently occurs due to outbreaks of epidemics and epidemics. Therefore, a large number of livestock and poultry carcasses need to be harmlessly treated. According to statistics, the number of livestock and poultry carcasses that need to be harmlessly treated every ...

AI Technical Summary

Problems solved by technology

②The decomposition method of the corpse well, similar to the deep burial method, has many disadvantages and risks, and it cannot be completely harmless.

③ For incineration, open land far away from residential areas and water sources should be selected, and an incinerator should be built in the downwind of residential areas, and coal, firewood and other fuels should be used to incinerate livestock and poultry carcasses. The high temperature generated by incineration can kill infectious pathogens. Bacteria and viruses are all killed, and the burned waste gas contains toxic and harmful gases and dust such as dioxins and nitrogen oxides. It needs to be dedusted and purified by special equipment and processes before it can be discharged into the atmosphere. This method requires a large investment and high cost , is no longer suitable for low-profit farming

Patent CN 101182247 B, 2010.09.29 discloses a new method for the harmless treatment and utilization of sick and dead livestock and poultry, but there are several problems in actual operation that seriously restrict its popularization and application, such as: ① drying and carbonization process will Produce a large amount of toxic and harmful gases with foul smell (such as amines, phosphine, hydrogen sulfide, dioxin, etc.) to pollute the environment; ② biogas (mainly composed of methane CH 4 ) is mainly based on the fermentation of organic matter containing carbon and hydrogen. Adding animal materials with high nitrogen, phosphorus and sulfur content will not only increase the biogas production, but will produce toxic and harmful gases, especially phosphine and hydrogen sulfide. Once leaked, it is very dangerous. Although the follow-up process has undergone desulfurization and purification treatment, the effect is not very satisfactory. In addition, the residues of antibiotics and other drugs left in livestock and poultry carcasses will inhibit the fermentation of methane bacteria to produce gas, so animal carcasses are not suitable for biogas fermentation.

Patent CN 103396181 B, 2014.10.08 discloses a method for producing bio-organic fertilizers from sick and dead livestock and poultry, which requires long-term high-temperature cooking and high-temperature stir-frying. Although it can kill pathogenic microorganisms in corpses and degrade drug residues such as antibiotics, the energy consumption Extremely high, and a large amount of odorous gases such as dioxin, ammonia, hydrogen sulfide, etc. are released into the air during high-temperature cooking and high-temperature stir-frying to pollute the environment

Patents CN 103396180 B, 2015.05.06 and CN 103694009 B, 2015.07.08, both of which use composting fermentation method, antibiotics and other drug residues in livestock and poultry carcasses will inhibit the activity of composting fermentation microorganisms, delay the fermentation process, and the fermentation time is long up to 35-50 days, although the fermentation temperature of 55-60°C for more than 30 days can kill almost all pathogenic microorganisms, but in the initial stage of fermentation, uninactivated pathogenic microorganisms will inevitably spread into the atmosphere to spread the disease, and during the fermentation process there will be Toxic and harmful gases with foul odors such as ammonia, hydrogen sulfide, and phosphine continue to be discharged into the atmosphere to pollute the environment

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