How to treat dead pigs harmlessly

Suitable for small pig farms. The self-built corpse pool is a sealed body, with an inclined inlet at the top and a sealed cover at the inlet. There are corrosive and bactericidal substances such as strong acid and alkali in the "corpse pool". After the pig died, it was thrown into the pool through the feeding port and sealed and buried until it was completely decomposed. Advantages: simple treatment, little harm and low cost. Disadvantages: poor anti-seepage, anti-leakage, anti-odor, and pollution risk to soil and groundwater. The volume is limited, and once the treatment volume becomes larger, it will not be competent.

Second, incinerators

Suitable for large pig farms. Inject fuel, turn on the power supply and start the combustion-supporting switch. When the temperature in the furnace reaches the spontaneous combustion temperature, put the dead pig into the furnace, turn off the combustion-supporting switch and start the spontaneous combustion switch until it is completely carbonized. Carbide is buried far away from water sources and residential areas. Advantages: no peculiar smell and odor, and high treatment efficiency. Disadvantages: complicated mechanical structure and high maintenance cost.

Third, fermentation composting method

At present, it is more common in the midwest of the United States, and it is suitable for popularization and application in China. In a closed environment, through high-temperature sterilization and aerobic biodegradation, the dead pig carcasses are transformed into raw materials for producing high-quality organic fertilizers. Advantages: all microorganisms grow naturally, and no additives are needed except animal carcasses and fillers; Easy to learn and manage; Low investment and operating costs; Suitable for large and small farms; Turn waste into treasure, protect the environment and recycle resources.

(a), technical points

1, filler selection: peanut shell, corn stalk, corn stalk silage, hay, chaff, waste paper, leaves, etc.

2. Water content requirement: 20-50%. It is advisable that the sawdust is not lumpy in appearance and cannot squeeze out water. Low moisture content and low decomposition rate; High moisture content and strong rancid smell.

3. Porosity: 40%, allowing oxygen to enter the reactor. Large porosity leads to low decomposition rate and low reactor temperature; Small porosity also leads to low decomposition rate, low reactor temperature and strong odor.

4. Temperature requirements: 37.7℃-65.6℃. Keeping the temperature above 55℃ for at least 5 days is the key to eliminate pathogens.

5. Site selection requirements: stay away from the pigsty for more than 60 meters, avoid water sources, consider the main wind direction, do a good job in biological safety, and cooperate with large-scale aquaculture construction.

(II) Operation and management

1. At the beginning, the ground was paved with a layer of sawdust with a thickness of 30 cm. After stacking a layer of corpse, a 30 cm gap near the wall should be filled with sawdust, and the surface of corpse should be covered with sawdust of at least 20 cm.

2. Composting cycle is 6 months. In the third month, mechanical secondary turning is carried out to redistribute excess water and introduce new oxygen supply, and the effect is good.

3. Temperature and humidity control: In the composting process, water is sprayed to maintain humidity in dry weather, and the stacking temperature is controlled by a long needle thermometer.

Harmless treatment of dead pigs has always been a difficult point in the development of pig industry, and fermented compost is not a simple corpse accumulation. Choosing appropriate treatment methods for pig farms of different sizes can effectively solve this problem.