Composite microbial preparation for degrading high-oil-content kitchen waste and preparation method and application thereof

Abstract

The invention provides a preparation method of a composite microbial preparation for degrading high-oil-content kitchen waste. The composite microbial preparation comprises acinetobacter johnsonii, candida utilis, phanerochaete chrysosporium, bacillus subtilis and geobacillus stearothermophilus. The method comprises the following steps of S1, inoculating strains subjected to activation culture to a fermentation culture medium according to the mass percent of 5%, and performing fermentation culture, and S2, mixing the thalli cultured in the step S1 to prepare liquid mixed bacteria, mixing the liquid mixed bacteria with a solid adsorption carrier according to a mass ratio of 1: (1.5-2), and carrying out carrier adsorption and drying to obtain a composite microbial preparation. The liquid mixed bacteria comprise 30 to 40 percent of acinetobacter johnsonii, 10 to 20 percent of candida utilis, 10 to 15 percent of phanerochaete chrysosporium, 10 to 20 percent of bacillus subtilis and 10 to 20 percent of geobacillus stearothermophilus. Macromolecular compounds such as animal fat, vegetable fat and cellulose which are not easy to decompose in the kitchen waste can be efficiently and rapidly decomposed, and the degradation rate of protein and starch is maintained.

Description

technical field [0001] The invention relates to the technical field of environmental protection microorganisms, in particular to a composite microbial preparation for degrading high-oil-containing kitchen waste, a preparation method and an application thereof. Background technique [0002] With the improvement of living and production standards and the rapid development of society, the catering industry is booming, but the situation of environmental pollution and energy crisis caused by food waste is becoming increasingly severe. With the widespread development of waste separation actions, management methods for food waste treatment in various places have been introduced one after another, and the society's demand for food waste treatment is getting higher and higher. At the same time as my country's urbanization, the amount of food waste generated is increasing year by year. According to statistics, since 2014, the annual output of food waste in my country has exceeded 60 m...

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Problems solved by technology

[0005] The above-mentioned technologies all belong to the technology of using traditional microbial strains in the agricultural field to mix a certain proportion and then treat food waste. At present, various composite microbial agents can play a certain role in the treatment of food waste, but with the in-situ treatment of food waste For the application of equipment, especially the promotion of miniaturized food waste treatment equipment, there are still some problems with the current compound microbial preparations: First, in the process of processing high oily food waste, due to the high content of animal fat and vegetable oil, general microbial The degradation rate of the bacterial agent is slow, which leads to a long cycle for the equipment to treat food waste, low efficiency of food waste reduction, and a large amount of oily food waste leachate; secondly, high oil will interact with protein, starch, and moisture in the food waste After being stirred into blocks, the specific surface area of ​​the food waste in contact with the air during the fermentation process is reduced, and the aerobic degradation rate of microorganisms is reduced. The food waste treatment equipment cannot function well, and the reduction of food waste treatment is low. The initial material of organic fertilizer is not up to standard

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