Method and system for preparing restaurant-kitchen wastes into livestock and poultry feed

Abstract

The invention discloses a method and a system for preparing restaurant-kitchen wastes into a livestock and poultry feed, wherein the method comprises the following steps: carrying out sorting preprocessing on restaurant-kitchen wastes so as to obtain biodegradable restaurant-kitchen wastes; carrying out solid-liquid separation on the obtained biodegradable restaurant-kitchen wastes; adding bran, corn flour and coarse meal into the obtained product so as to obtain a mixed material; adding composite fungicides into the mixed material according to the inoculum concentration (8-20 wt%) so as to ferment the mixed material; and finally, drying and cooling the fermented mixture, then packing the obtained object so as to obtain a livestock and poultry feed product. The system comprises a feed device, a wet sorting machine, a pressafiner, an agitated mixer, a fermentation tank, a low-temperature drying machine, a crusher and a finished product material storage tank which are sequentially connected; and the system has the advantages that the growth of putrefying bacterias and the reproduction of pathogenic microorganisms in restaurant-kitchen wastes can be inhibited, and the freshness retaining effect and organoleptic quality of the livestock and poultry feed are good; meanwhile, the protein content of the livestock and poultry feed can be improved; in addition, the system is low in used equipment cost, small in energy consumption, high in production efficiency and beneficial to environmental protection.

Description

technical field [0001] The invention relates to a feed processing method and a system thereof, in particular to a processing method and a system for making livestock and poultry feed from food waste through microbial fermentation. Background technique [0002] Food waste refers to food waste and food residues from families, schools, public canteens of institutions, and the catering industry. . In terms of chemical composition, there are starch, cellulose, protein, lipids and inorganic salts, etc., and its characteristics are as follows: 1. The content of organic matter such as crude protein and crude fiber is high, and the value of development and utilization is high, but it is perishable and produces stench; 2. 1. High water content, inconvenient to collect and transport, and easy to cause secondary pollution if not handled properly; 3. The content of oil and salt is higher than other domestic waste, which has a greater impact on the quality of resource-based products and ...

AI Technical Summary

Problems solved by technology

In terms of chemical composition, there are starch, cellulose, protein, lipids and inorganic salts, etc., and its characteristics are as follows: 1. The content of organic matter such as crude protein and crude fiber is high, and the value of development and utilization is high, but it is perishable and produces stench; 2. 1. High water content, inconvenient to collect and transport, and easy to cause secondary pollution if not handled properly; 3. The content of oil and salt is higher than other domestic waste, which has a greater impact on the quality of resource-based products and requires a lot of processing costs. Therefore, kitchen waste The disposal and whereabouts of the surplus has become an urgent problem to be solved

[0003] There are two main ways to make food waste into livestock and poultry feed. One is to obtain swill powder directly through dehydration, drying, and sterilization, but there is a safety problem of protein homology; Fermentation of bacteria to produce single-cell protein feed. The feed obtained in this way has good palatability, is conducive to digestion, and has no obvious threat to pigs and humans. However, for the bacteria used to produce protein feed by fermentation of kitchen waste, molds are mostly used. , Yeast, because the pH value suitable for the growth of mold and yeast is 6.5-7, it is conducive to the growth of spoilage bacteria and the reproduction of pathogenic microorganisms in the kitchen waste, resulting in the deterioration and odor of the kitchen waste, making the prepared livestock and poultry The feed protein content is low, the fresh-keeping effect is poor, and it also has a foul smell, and the sensory quality is poor

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