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.