Dry-type ecological fermentation bed should also be ventilated Laboratory Sterilizer,Laboratory Sterilizers,Laboratory Steam Sterilizer,Lab Sterilization Equipment ZHEJIANG FOMOS MEDICAL TECHNOLOGY CO.,LTD. , https://www.ifomos.com
All piggeries require constant ventilation to remove heat, moisture, dust, gases and pathogens from the pig house. The dry-sweeping piggery is no exception. This is especially important in cold Heilongjiang.
1. The principle of gas flow The gas flow has certain rules. Under the influence of no external force, the gas with high density is located in the lower part of the container, the gas with small density is located in the upper part of the container; after the gas is always heated, the volume expands, the density decreases, the gas moves upwards; the volume of the gas is always reduced after being cooled As the density increases, the gas moves downwards.
2, an important factor for good ventilation First, there is a certain flow rate through the gas in the pig house.
The second is that the gas entering the pig house should be evenly distributed to all areas in the pig house, and the fresh air should be fully mixed with the indoor air.
3. Dry-sweeping eco-fermentation pig bed technology in dry-sweeping piggery is to use the function of microorganisms to decompose the pig's excreta to generate a lot of heat, and at the same time the heat evaporates the moisture in the litter to the air. Through the exchange of gas in the pig house, the removal of water vapor and heat in the pig house is completed.
Fermentation of the dry-sweeping fermentation bed is an oxygen-consuming process. If the ventilation in the pig house is poor, microbial activity will be inhibited, and the ability to decompose the manure will decrease, which will result in the accumulation of large amounts of feces on the fermentation bed, and the activity of anaerobic bacteria species. Increased capacity, aggravated ammonia odor, increased carbon dioxide concentration in piggery, and other unfavorable factors.
The density of air carrying a lot of water vapor is small, and it will continue to move to the top of the pig house. Therefore, the exhaust hole of the pig house should be on the roof of the pig house. If there is no vent in the pig house, the hot and humid gas will condense into water droplets on the roof, causing the water droplets to drip back, causing secondary evaporation of the moisture in the fermentation bed, which increases the working strength of the dry-sweeping fermentation bed.
The exchange of gas is a fluid process and therefore there must be a constant flow of off-gas into the pig house. In Heilongjiang, because the average annual temperature is only 4.5 degrees - minus 6 degrees, most of the year is very cold, the air intake of the pig house should be higher, so that the cold air entering the pig house can be mixed with the air in the house first. After arriving at the body surface of the pig, the disease of the pig will not be caused by the cold air directly reaching the body surface of the pig.
4. Methods of Ventilation There are two methods for ventilation. One is natural ventilation and the other is forced ventilation.
5. Ventilation Design Natural ventilation is mainly dependent on the airflow through the pig house, that is, the flow of wind. Therefore, the design of the pig house should fully consider the use of natural ventilation. According to the geographical location of the farm and the local climate characteristics, the ventilation system of the pig house should be designed according to local conditions.
(1) The pig house should be built in an open, high place, away from any wind blocking obstacles.
(2) The distance between pig houses should be large, so that the spread of diseases between different pig houses can be reduced.
(3) The long axis of the pig house should be perpendicular to the local main wind direction.
(4) The span of the pig house should not exceed 15 meters.
(5) The design of vents is very important.
The pig house spans the vent hole of the roof The vent hole of the roof 10 meters 0.18 meters 0.09 meters 12 meters 0.20 meters 0.10 meters 13 meters 0.22 meters
The 0.11 meter vent must be of the correct size and must be installed in the correct position so that the incoming fresh air spreads evenly and mixes well with the air in the room.
friendly reminder:
All dry fermentation beds that are not "Golden Baby" brands are fake and shoddy products.
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Dry-type ecological fermentation bed should also be ventilated