Classification and characteristics of composting method for harmless treatment of dead livestock and poultry

Since the development of composting methods, many composting methods have appeared to meet the composting needs of different composting materials. According to the different composting methods, it can be roughly divided into three types: frequent composting, static composting and fermentation barn composting. However, as far as composting of animal carcasses is concerned, static composting mode or (1) static composting in fermentation barn is the first choice to treat animal carcasses, which has simple equipment requirements, low investment cost, high maturity and good stability, and can also be built into a pyramid shape. Strip static compost is turned once every 3~7 days, and pyramid static compost is turned once every 3~5 months. Before the pathogenic microorganisms in infected animals are completely killed, frequent stacking may lead to the spread of pathogenic microorganisms, pollute stacking equipment and even infect stacking personnel. In addition, frequent pile turning will disturb the flora around animal carcasses and interfere with the degradation of animal tissues. 2) The composting system of fermentation bin has small floor space, small space limitation, good biological safety and is not easily affected by weather conditions. The temperature, ventilation, moisture and other factors in the composting process can be well controlled, thus effectively improving the composting efficiency and product quality. However, it is difficult to accommodate large animals such as cattle and horses, so it is only suitable for the treatment of small infected animals.