In the rural pig industry, environmental inspections are becoming more and more stringent. Many pig farms have installed pig manure treatment equipment. After the pig manure is separated from solid and liquid, the dry manure must undergo aerobic composting to sell at a good price. In order to reduce the cost of composting, the fermentation time of composting should be shortened as much as possible. In the process of aerobic fermentation in farms, the choice of filler is very important.
The filler can provide carbon source, increase the porosity of the stack, and adjust the moisture content of the material. Fresh pig manure has high water content, is easy to agglomerate, and has less free space, which is not conducive to aeration and oxygen supply. Therefore, it is easy to make fermentation in an anaerobic state and produce odor, which cannot achieve the purpose of aerobic digestion. Simple pig manure has relatively few carbon sources, which is not conducive to the growth and reproduction of microorganisms. The moisture of fresh pig manure is generally 70-80%. For composting, the humidity is too high and must be adjusted. In the fertilizer production process, pig manure is a commonly used organic fertilizer raw material. However, the process of fertilizer production has certain requirements for moisture.
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In rural areas, there is a large amount of unused corn stover, which can be used as a filler for pig manure fermentation. In addition, wood chips, sawdust, and rice husk are also ideal conditioners. In the United States in recent years, many composting plants have used waste paper as a filler. Like corn stover, furfural residue and mushroom residue are also common solid wastes, which are produced in a large amount and easily cause environmental pollution. If they can be used reasonably in high-temperature composting, waste can be turned into treasure.
In addition, in order to reduce the production cost of organic fertilizer produced by pig farms, especially the use of deep tank fermentation to produce organic fertilizer, the compost composting time is often shortened in production, so corn stalks or other fillers cannot be added too much to the extent that carbon The source is too high.
Pig manure fermented composting is just that organic fertilizer granulator is generally used for fertilizer granulation. The organic fertilizer granulator has a high granulation rate, complete models, and can also be customized.