While it is hot, transport the culture material that has been completed before fermentation to the bed frame, close the doors and windows, and use the pipeline steam generator to pass the steam into the shed to increase the temperature. When the temperature rises to 63℃, press the fire to control the temperature. If necessary, open the doors and windows to cool down , Maintain the temperature at 60℃ for 12~24h. After that, open the vent and cool down to 50°C for 5~7d, and finally ventilate and cool down to discharge waste gas and residual ammonia produced during the fermentation process
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