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干发酵通常是指发酵料液总固体浓度超过20％的发酵方法,由于固体浓度太高难以采用连续投料或半连续投料方式,绝大多数均采用批量投料。国外主要在处理城市固体废物时使用,例如:城市垃圾的“卫生坑填”,国内则在农村户用沼气池中使用。已有的研究和生产应用大多采用秸秆加粪便的混合原料,效果都较好。但粪便是一种逐日生产的原料,批量使用时需长期存放,农户常常是办不到,而且粪便经存放之后发酵的效果也不好。所以采用混合原料的干
Dry fermentation usually refers to the fermented liquid total solid concentration of more than 20% of the fermentation method, due to the high solid concentration is difficult to use continuous or semi-continuous feeding mode, the vast majority are used batch feeding. Foreign mainly used in the treatment of municipal solid waste, such as: urban garbage “sanitation pit filling”, while domestic use in rural household biogas digesters. The existing research and production applications mostly use straw and manure mixed materials, the effect is better. However, the excrement is a daily raw material that needs to be stored for long periods of use. Farmers often can not do it and the fermenting effect of the excrement is not good. Therefore, the use of mixed raw materials dry