The invention discloses a
biological waste fermentation and
biogas synergistic heat production and
fertilizer supply method, and relates to the technical field of biological resource treatment, and the method comprises the following specific steps:
biological waste classification pretreatment, material proportioning mixing and crushing, anaerobic
fermentation synergistic
biogas recovery,
fermentation material decomposition regulation and control, and
flora inoculation and after-
ripening. The
utilization rate of the raw materials is effectively improved through classification pretreatment of the raw materials, such as
impurity cleaning of weeds, normal-temperature soaking of
cellulase and stirring and scattering of excrement, and in the material matching, mixing and crushing stages, the uniformity and high efficiency of the fermentation raw materials are ensured by controlling the
mass ratio of the weeds to the excrement and the crushing particle size, so that the fermentation efficiency is improved. In the anaerobic fermentation process,
biogas is recycled to serve as recycling energy, heat released by fermentation is collected through the heat exchange component to be used for
heat supply, multi-stage utilization of energy is achieved, meanwhile, clean and safe utilization of the biogas is guaranteed through gas-liquid separation and desulfurization treatment, and
greenhouse gas emission is reduced.