Pig house dung ditch air intelligent biological filtration device and method

Abstract

The invention relates to a pig house dung ditch air intelligent biological filtration device and method, and belongs to the field of husbandry environment engineering. The device and the method are applied to local air treatment of a pig house dung ditch. The device comprises an air extracting system and a biological filtration system connected with the air extracting system. The air extracting system comprises a dung ditch exhaust main pipe, a plurality of dung ditch exhaust branch pipes and a centrifugal fan, wherein the dung ditch exhaust main pipe is arranged on the side face of the dung ditch under the ground of a pig house, the dung ditch exhaust branch pipes are arranged on the dung ditch exhaust main pipe, and the centrifugal fan is arranged outside the pig house and connected withthe dung ditch exhaust main pipe. The biological filtration system is arranged outside the pig house and comprises a biological filtration tank, a spray system and a plurality of porous packing materials, wherein the biological filtration tank is connected with the centrifugal fan, the spray system is arranged at the top of the biological filtration tank, and the porous packing materials are arranged in the tank. Traditional total air treatment of the pig house is replaced by local air treatment of the pig house dung ditch, odor treatment capacity is reduced, and the construction cost of thebiological filtration device is saved.

Description

technical field [0001] The invention belongs to the field of animal husbandry environmental engineering, and relates to an intelligent biological filter device and method for manure ditch air in pig houses. Background technique [0002] my country is not only a big pig breeding country, but also a big pork consumer. Both the pig breeding and pork consumption account for about half of the global total. The development of pig farming is of great significance for ensuring market supply, increasing farmers' income, and promoting economic and social stability. . However, with people's attention to air pollutants and the continuous improvement of environmental protection requirements, the odor produced by pig breeding has become a major hidden danger affecting the living environment, and it is also a major challenge restricting the sustainable development of the pig industry. Therefore, how to reduce odor emissions and protect the surrounding human settlements without affecting pi...

AI Technical Summary

Problems solved by technology

[0006] The existing biological filtration device is directly connected to the main exhaust fan of the pig house, which exhausts all the dirty air in the pig house, and the exhaust air volume is usually very large (the discharge volume of a single pig house is as high as 20m 3 per second), even if calculated according to the minimum gas residence time (1 second), the packing volume will be as high as 20m 3 , which not only results in higher purchase cost of filler, but also takes up more pig farm land

On the other hand, the pig house odor mainly comes from the volatilization of pig feces and urine, and the feces and urine are mostly stored in the manure ditch. Therefore, the pig house odor mainly comes from the manure ditch and is mainly concentrated in The manure ditch, the concentration of gas and odor emitted by the main exhaust fan of the pig house is much lower than that of the manure ditch. Therefore, it is a waste of resources to introduce all the gas from the main exhaust fan of the pig house into the biological filter for treatment.

[0007] After the packing of the existing biological filtration device is used for a period of time, due to the long-term effect of the wind pressure, the packing is continuously compacted, and the volume of the packing is continuously reduced. This not only reduces the residence time of the gas, but also reduces the degradation effect under the condition of a certain exhaust air volume. , also increases the pressure drop of the fan, which is not conducive to the efficient use of the fan

In practical applications, when this happens, the packing is often severely compacted, and the user can only manually turn the packing or directly replace the packing, which is not conducive to the service life of the packing and the automatic management of the pig farm.

Images