Biogas slurry fertilizer fermentation production device and process thereof

The invention discloses a biogas slurry fertilizer fermentation production device which comprises a biogas slurry fermentation tank and an air compressor, the biogas slurry fermentation tank is connected with a biogas slurry pump, the biogas slurry pump is connected with at least one biogas slurry fermenter, and a steam inlet pipe is arranged on the biogas slurry fermenter; an outlet of the air compressor is connected with the aeration time controller through a pipeline, the aeration time controller is connected with the aeration flow pressure regulating valve, and the aeration flow pressure regulating valve is connected with at least one biogas slurry fermenter; and the biogas slurry fermenter is connected with the finished product tank through a pipeline. The method comprises the following steps: aerating biogas slurry in a biogas slurry fermentation tank by using an air compressor, adding an aerobic fermentation inoculant into the biogas slurry before aeration, and carrying out aerobic fermentation on the