The manure handling system of the pig farm

11 months ago

The pits under the slatted floor can be divided into deep pits and shallow pits.

The manure handling system of the pig farm

The pits under the slatted floor can be divided into deep pits and shallow pits.

The deep pit system is widely used in the Midwestern United States and can be used at all stages of production. The deep pit is generally 2.5m. Some pits are discharged by gravity or by the suction of the side of the sump.

Some rely on the mechanical action of the scraper to transport it out, and some are driven by people. The car goes in and removes the manure. The size of the deep pit is sufficient to store 1 year of manure and is used centrally in agricultural production.

Shallow pit treatment is most widely used in the southeastern United States, similar to the blisters that we commonly use. The septic tank is 0.6m deep and has a certain slope at the bottom for defecation.

The farm will clean the manure once every 5-7 days, and each time the manure is completed, a few centimeters of water will be added to the septic tank. On the one hand, it is difficult to prevent the drying of feces, and on the other hand, the feces are covered under the surface of the water to reduce the overflow of odorous gases such as ammonia.

When the pig's urine and water are spilled in the septic tank for a period of time, the process unit is generally used for solid waste separation, anaerobic digestion and sedimentation.

In Canada, where the planting industry is developed, a large amount of fertilizer is needed. After the anaerobic and aerobic fermentation, the manure is applied to the land by organic fertilizer, and the manure treatment is mainly composting.

Composting is a biological treatment. During the fermentation process, a large number of microorganisms convert the feces into a hygienic, biologically stable product that meets hygienic standards.

The pig manure sewage is generally piped to the sewage treatment tank. In many large-scale pig farms, special tanks without roofs can be seen. Immediately after the sedimentation of the manure in these pools, a large flotation device with high efficiency flocculation is used to recycle the effluent BOD and then recycle.

There are also many pig farms that use anaerobic and aerobic fermentation. After the sewage treatment reaches the standard, it is used for crop fertilization or as irrigation water to achieve a virtuous cycle of pig production and planting production.

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