The invention relates to the technical field of biological
agriculture, and particularly discloses a method for culturing
hermetia illucens and extracting
protein powder by using
food waste solids. The method comprises the following steps: firstly, performing
impurity removal, crushing and
solid-liquid separation treatment on the
food waste; then light-controlled segmented breeding is implemented, long illumination is adopted in cooperation with
blue light in the early stage to promote growth of larvae, short illumination is switched in the later stage, high-
protein-induced slow-release gel prepared through
food waste liquid
fermentation is fed, and automatic regulation and control of illumination and feeding are achieved through a spectrum sensor; and finally, carrying out low-temperature and low-pressure flash wall breaking, vacuum
freeze drying and screening treatment to obtain
protein powder, synchronously separating
grease, and fermenting the breeding residues to prepare the
organic fertilizer. According to the method, food waste liquid recycling and
hermetia illucens
larva protein directional enrichment are synchronously achieved, the breeding regulation and protein extraction technology is optimized, the protein
powder quality is improved, full-process
resource utilization of food waste is achieved, the technology adaptability is high, by-products can be recycled in a closed-loop mode, and the method has outstanding
waste recycling and industrialization application value.