Method for cleansing and deodorizing air in livestock and poultry house in multistage manner

Abstract

The invention relates to a method for cleansing and deodorizing air in a livestock and poultry house in a multistage manner. The method uses a system for cleansing and deodorizing air in the livestockand poultry house in the multistage manner. The system is arranged on the upper portion of the livestock and poultry house and comprises a waste gas collecting chamber (3), a primary cleansing chamber (7) and a secondary cleansing chamber (12) and is characterized in that the waste gas collecting chamber (3) is the bottommost layer of the system and comprises a space formed by a bottom chemical adding water tank (4), an upper chemical adding water curtain (10) and walls on four sides, the bottom of the primary cleansing chamber (7) is the upper chemical adding water curtain (10), the upper portion of the primary cleansing chamber (7) is a microbial curtain (11), and the primary cleansing chamber (7) is sealed by peripheral walls; the bottom of the secondary cleansing chamber (12) is the microbial curtain (11), the upper portion of the secondary cleansing chamber (12) is provided with multiple chimney-shaped air outlets (14), and the secondary cleansing chamber (12) is sealed by peripheral walls. The method has the advantages that the system is added to the upper portion of the livestock and poultry house, air discharged by the livestock and poultry house is deodorized by the chemical adding curtain in a concentrated manner and then sterilized by the microbial curtain, and the deodorized and sterilized air is discharged out of the livestock and poultry house.

Description

technical field [0001] The invention relates to the air dust removal and deodorization technology of livestock and poultry houses, in particular to a method for multi-stage cleaning and deodorization of air in livestock and poultry houses. Background technique [0002] The exhaust gas produced by animal breeding places includes not only carbon dioxide exhaled by animals, but also ammonia, hydrogen sulfide, methyl mercaptan, methyl sulfide, trimethylammonia, styrene, ethanol, methyl disulfide, etc. produced by normal metabolism of animals. A foul-smelling gas. Large air odor, dust, and germs in livestock and poultry houses have always been a headache for intensive animal husbandry, which not only affects the surrounding environment, but also has adverse effects on animals such as pigs and poultry, which generally reduces production efficiency and seriously causes Disease outbreaks and sudden death have caused huge losses to the farms. At present, the most common deodorizati...

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Problems solved by technology

[0003] (1) Due to the large amount of exhaust air in the breeding house and continuous throughout the year, the newly installed activated carbon device will soon reach saturation and lose its deodorizing ability, thus requiring frequent and continuous updates, and the cost is high;

[0004] (2) Activated carbon generally has a higher adsorption rate in acidic solution than in alkaline solution, and the pH value will affect the state and solubility of the adsorbate in water, thereby affecting the adsorption effect, so the use of activated carbon adsorption method The effect is restricted by the environment;

[0005] (3) When a variety of adsorbates coexist, the adsorption capacity of activated carbon to a certain adsorbate is worse than that when only this kind of adsorbate is contained. The air composition of the livestock and poultry house is responsible. Greatly reduced;

[0006] (4) In practical applications, due to the limitations of high regeneration or replacement costs and inconvenient operation, many activated carbon deodorization and water curtain washing facilities are rarely regenerated or updated after initial installation, and their deodorizing and washing performance is poor. Moreover, with the increase of adsorbed substances, the resistance of the activated carbon fixed bed to the exhaust air is also increasing. While the exhaust efficiency is continuously reduced, the energy consumption of the exhaust air is also continuously increased.

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