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At present, there are two main ways to make food waste into feed: dehydrated feed and biochemical protein feed.

1. Dehydration feed technology: Dehydration treatment methods for producing dry feed include: conventional high temperature dehydration, fermentation dehydration, and frying dehydration. The main problem with this approach at present is that the animal protein in the feed may cause a potential, uncertain risk of disease after being consumed by the same animals, that is, homologous contamination. In addition, when the salt content of the feed is greater than 1.8%, for adult livestock The growth of the feed will have a certain impact, and the salt content of this feed is generally more than 2 times the value. It can be seen that the quality of feed products obtained in this way is not guaranteed, the safety is not easy to control, and there are irreversible safety hazards.

2. Biochemical protein feed technology: using kitchen waste as raw material, through microbial solid fermentation treatment, to produce bacterial protein feed, the treatment process is roughly as follows: after pretreatment (dehydration, impurity removal, crushing, desalination, etc.), solid The material is subjected to solid fermentation treatment, modulation and drying by adding probiotics, and finally protein feed is obtained. The liquid material is separated from oil and water to finally obtain industrial oil and wastewater.

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