Method for producing biogas through mixing gibberellin fungus dreg and kitchen waste and carrying out anaerobic fermentation

The invention relates to a method for producing biogas through mixing gibberellin fungus dreg and kitchen waste and carrying out anaerobic fermentation. The method comprises the steps: (1) removing relatively large hard impurities from the kitchen waste, carrying out uniform mixing, then, crushing the mixture by a crusher, and sieving the crushed mixture by a sieve with the grain size smaller than 5mm; adopting sludge rich in active methanobacteria as inoculation sludge, carrying out standing, removing supernatant, and adding the concentrated sludge into a mixed substrate at a starting stage of fermentation according to the ratio of 30g/L; (2) mixing the gibberellin fungus dreg with the kitchen waste, and enabling the C/N ratio to be (13 to 28): 1; (3) carrying out fermentation on the mixed substrate in a CSTR (Continuously Stirred Tank Reactor) while adjusting the temperature to 10 to 80 DEG C and the organic load to 1gVS/(L.d) to 10 gVS/(L.d), so as to degrade organic matters in a fermentation system and pr