Air deodorization in pig farms should consider these aspects

Many pig farms open their doors in the morning and people automatically evacuate because there is always an unpleasant odor. Currently, the most important aspect of environmental protection in pig farms, such as air deodorization, is undoubtedly the standardized treatment and resource utilization of feces and sewage. If pig farms want to meet the needs of surrounding environmental protection, government department visits, and daily staff, it is necessary to solve the odor problem.

Deodorizing the air in pig farms is not only to reduce the odor, but also to promote the respiratory health of pigs. Excessive ammonia concentration can lead to diseases such as cough and bronchitis. Pig farms are not indifferent to odors. They often plant trees and grass for greening, and install negative pressure ventilation systems in pig houses. This is something that most farms can achieve, but odors are not easy to eliminate. Farmers still hope to find a cost-effective, practical, and effective method for air deodorization in pig farms.

The public is very concerned about odors

A study found that a pig farm with an annual production of 100000 pigs emits about 159 kilograms of ammonia into the atmosphere per hour, which affects the health of livestock and poultry, as well as the normal lives of farm employees and even residents around the farm. According to GB18596-2001, the standard value for odor concentration in livestock and poultry breeding industry is 70. In fact, most pig farms emit odors far exceeding these indices.

The emotional impact of this foul odor is greater than its actual impact. Complaints about the foul odor are mainly from ordinary people, but few employees say they stopped working because of the odor, and there is no news that they got sick due to the influence of pig odor. It is precisely because of this idea that some pig farms are not actively deodorizing the air in pig farms. But ordinary people may not be able to tolerate the stench of pig farms.

Laying the foundation for air deodorization in pig farms from a hardware perspective

The air deodorization in pig farms starts with emission reduction facilities, which is the standard for large pig farms and can also adapt to the complex conditions of different pig farms. The first method is to remove feces and dirt in a timely manner, reduce indoor dust and microorganisms, try to separate feces and urine as much as possible, and replace soaking feces with dry cleaning feces, because soaking feces treatment method causes feces to stay in the pigsty for a long time, produces anaerobic reactions, has a large amount of odor, and the pollution concentration of feces water mixture is high.

Improving the environment of pig farms

Professor Wu Yinbao from South China Agricultural University said that air deodorization in pig farms can be achieved by planting green trees such as Robinia pseudoacacia and Eucalyptus trees around the pig pens, forming a protective barrier that can absorb ammonia. The ventilation system adopts wet curtain ventilation, which dissolves ammonia in water and reduces ammonia emissions through the wet curtain.

Air deodorization in pig farms can be achieved by adding shading nets to the sewage tank to reduce the spread of odors. In the process of wastewater treatment, odors are mainly generated in solid-liquid separation wastewater tanks, pre-treatment acidification tanks, etc. Sunshade nets can be used to cover sewage and acidify ponds to reduce the spread of odors, and can also be sprayed on feces containing deodorizing microorganisms, which can decompose these microorganisms. Follow Weisen to learn more about air deodorization in pig farms.