With the development of our country's economy, the society puts forward strong demands on the safety of livestock and poultry products and the protection of the environment. The control of drug residue and disease in livestock and poultry products has become the focus of attention of the whole society. Health and epidemic prevention, market globalization, and green barriers have caused the domestic chicken industry to face strong pressure. In the event that all the immunizations and medications have failed, the epidemic prevention level of facilities and equipment has once again become chicken disease experts and environmental experts. The technical focus of the CEOs of chicken companies. From the perspective of epidemic spread, relying on traditional environmental control technologies and facilities and management to prevent epidemics is ineffective or has little effect. Therefore, the technical system that can control the above factors in a unified manner should be a comprehensive epidemic prevention system that includes epidemic prevention and environmental control technologies and the new structure of their facilities, real-time disinfection and sterilization technology for feed and drinking water. In terms of domestically built henhouses, almost all chicken farms must be rehabilitated from the new requirements for disease prevention. New chicken farms should adopt new quarantine technology systems to meet the requirements for the construction of environmentally safe chicken farms.
The requirements for the construction of an environmentally safe chicken farm: The basic requirement for the construction of an environmentally safe chicken farm is that the chicken house can control the total amount of pathogenic microorganisms in terms of air, feed, drinking water, and excrement, and it can be used in air, temperature, light, Several aspects of sound protection of livestock and poultry comfort. Therefore, the design and construction of environmentally safe chicken farms should proceed from the following directions:
1 Air Quality Control Technology
1.1 Quality Control of Gas into the House Many contagious diseases spread through the air. When the airborne dust contains epidemic viruses, it spreads easily in a group of chickens. The speed of air flow in neighboring chicken houses and chicken farms When it is larger, it will be infected in a very short time. Therefore, the air entering the house must be purified and sterilized. For the installation equipment of environmentally safe housing, the best equipment at present is the DJM 110A type animal house inlet air purification sterilizer. The purifier is based on the principles of dust removal, sterilization and disinfection of the DC corona electric field, and thoroughly purifies the air entering the turkey house to obtain sterile, non-toxic and dust-free clean air. This system has almost no resistance to airflow into the house. It can be matched with the natural draft exhaust pipe, positive pressure air supply system and negative pressure air delivery system.
1.2 Gas Quality Control in the House The control of air quality in the house mainly refers to the air quality control in flat-raising and caged chicken houses. The air quality in the house is mainly affected by the content of dust and harmful gases. It is a key link in the design of an environmentally safe house.
The dust in the house is mainly due to chicken skin, feathers, and cough. Droplets generated when tweets. However, the sources of dust in flat- raising and caged chicken houses are different, and the mat grass in flat-raised houses can also generate large amounts of dust. The total dust concentration in the air of a typical poultry house is approximately 420mg/m3. Dust can cause irritation to the respiratory tract and cause infection, and a large number of pathogenic microorganisms attached to the dust are carriers of spread disease. Therefore, the continuous exhalation of dust in the respiratory tract can continue to place pathogenic microorganisms in the human-infected area, which is one of the main causes of the environment that causes immunity and drug failure.
The harmful gases in the shed mainly include: 1 Produce S, NH with a foul odor. , Volatile fatty acids (VFA), etc.; (2) Volatile odors such as unsaturated aldehydes and skatole contained in dust in the air; (3) Odors from the continuous decomposition of organic matter in the dust by microorganisms attached to the dust. The odorous substances produced in the process of decomposition and decomposition of feces have the greatest impact on the formation of malodorous gases in caged chicken houses. Regardless of the concentration of harmful gases, the persistent effects of harmful gases in the chicken house will cause damage to some organs of the chicken body and resistance to diseases. This is another major environmental cause of immunization and drug failure.
At present, the comprehensive technical equipment that can reduce the concentration of harmful gases and remove dust is only a type of equipment for the electric house purification and epidemic prevention system of livestock and poultry houses. It can establish a space electric field control network in a chicken house, and the space electric field control network is reasonably suspended by a certain number of insulators in accordance with the law of the influence of the chicken club structure on the electric field strength of the space, between the insulators by the electrode wire. Connected together, the space electrode network is powered by the main power supply. The strong electric field, high-energy charged particles, and trace ozone generated between the space electrode and the ground and the building structure can be very effective in dust removal, defogging, dehumidification, and killing of pathogenic microorganisms in the air and on the surface of the object.
The space electric field control network generally removes the dust in the house from 80% to 100%. The air humidity can be reduced by 3% to 12%. The removal efficiency of harmful gases is generally 40% to 60%, and the CO2 removal efficiency is 30. % to 40%. The main indexes of air quality in the house can meet the primary and secondary indicators specified in GB3095-1996. The removal efficiency of colonies in the air in flat chicken houses was 82% to 99%. For environment-safety caged chicken coops, not only a space electric field control network is set above the chicken house, but also a space electric field control electrode must be provided in the excrement. Such an all-dimensional space electric field control system can achieve the removal efficiency of microbe colonies in the air. 90% to 99%.
1.3 The gas quality control at the exhaust outlet The exhaust port is also a population of contaminated toxic dusty gas into the turkey house. Therefore, in order to prevent inadvertent external air from entering the house from the gas outlet pipe due to changes in meteorological conditions, an electric gas purifier must be installed at the exhaust port. The gas control of the air outlet is also performed by a gas electric purifier installed at the roof. The purifier can be installed on the roof of a livestock house and communicated with the house by a gas outlet pipe. Its dust removal and sterilization process and the various indicators are the same as the gas electric purifier installed at the air inlet. The 600m shed requires approximately 8 gas purifiers and requires a power of 24W. In order to increase the air flow into the turkey house, an exhaust canister can be installed at the top of the gas electric purifier to increase the pullout force, or can be made by adding a sunlight-absorbable high pull-out plastic film at the interface end of the roof gas electric purifier. The exhaust pipe, which can be pulled by a hydrogen balloon. Exhaust pipe length is generally 6 ~ 12m, this type of exhaust pipe is very suitable in summer, can reduce the temperature 2 ~ 3 °C, if you plant near the air intake and the use of feed corn as a natural cooler, It can make the temperature difference between inside and outside reach 4 °C ~ 5 °C, comparable to the wet curtain cooling system.
1.4 Control of the gas quality of the manure outlet of the manure channel For the caged chicken house, the manure outlet of the manure channel is also the location of gas exchange between the house and the house, and it is also the channel for pathogenic microorganisms to enter the house. Therefore, gas-electric purifiers must also be installed as excrement outlets for fecal passages in environmentally safe poultry houses.
This kind of house is also a fully enclosed chicken house. The 600m2 fully-enclosed chicken house with a comprehensive omni-directional static control scheme combining natural induced wind with space electric field purification, disease prevention and epidemic prevention technology requires electric power of about 80 to 110 W, and generally does not exceed 130 W. In terms of energy consumption, This scheme is far more energy-efficient than the combination of positive-pressure and negative-pressure air-supply systems and space-based electric cleaning, disease prevention and epidemic prevention technologies. In the absence of an outbreak, the control of air quality can be done in an intermittent cycle. For example, if you work for 15 minutes and break for 60 minutes, your daily power consumption will be even lower.

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