Method for treating and utilizing kitchen wastes and straws by using black soldier fly larvae

Abstract

The invention discloses a method for treating and utilizing kitchen wastes and straws by using black soldier fly larvae. The method comprises the following steps: mixing crushed straws with slurry prepared from the kitchen wastes, and adding bacillus subtilis and bacillus licheniformis to form mixed feed; paving the mixed feed in a black soldier fly larvae breeding trough for breeding the black soldier fly larvae; sieving the black soldier fly larvae and feed residues in the black soldier fly larvae breeding trough when the larvae enter the pre-pupa stage; directly using the black soldier flylarvae as feed for fishes and poultry or preparing the black soldier fly larvae into dried insects to serve as a protein feed raw material; fermenting and composing the feed residues to obtain organicfertilizer by an aerobic composting process. According to the method disclosed by the invention, cooperative treatment and utilization of the kitchen wastes and the straws can be realized; and the kitchen wastes and the straws meet the growth demand of the black soldier fly larvae and are transformed into animal protein feed and the organic fertilizer, so that a disposal method is greatly simplified and the efficiency is improved.

Description

technical field [0001] The invention relates to a method for processing and utilizing kitchen waste, in particular to a method for utilizing black soldier flies to process and utilize kitchen waste and straw. Background technique [0002] With the advancement of urbanization, the siege of cities by garbage is becoming a global trend. Garbage is an appendage of urban development. The operation of cities and people produces hundreds of millions of tons of garbage every year. On the one hand, there is the ever-growing urban garbage, and on the other hand, the unbearable stench of garbage, which has become a thorny problem in urban garbage disposal. Rapidly developing Chinese cities are experiencing the pain of "garbage siege". Statistics show that more than one-third of the cities in the country are surrounded by garbage. The total amount of urban garbage piled up in the country has reached 7 billion tons over the years, and the production volume has increased by about 8.98% e...

AI Technical Summary

Problems solved by technology

If the excess water is filtered out through solid-liquid separation, and then the black soldier flies are raised, the filtered liquid needs to be treated additionally, and the residue formed after the black soldier flies are raised with pure food waste solids in the subsequent treatment will also greatly increase processing cost

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