To recycle brewery distiller’s grain and brewery sludge in Baijiu enterprises, an aerobic composting fermentation equipment was designed for treatment of brewery distiller′s grain and brewery sludge. Four different volume ratios (1∶1, 2∶1, 3∶1 and 4∶1) of brewery distiller′s grain to brewery sludge were analyzed. The results showed that the ratio of 2∶1 had the best effects and important indication parameters were at good levels. Moreover, the final seed germination index (GI) reached 0.88, which was significantly higher than those of others (P<0.05) and completely met the requirements of maturity. When the ratios were 3∶1 and 4∶1, the effects were at an average level, and the values of GI reached 0.72 and 0.66, respectively. The effect was weak when the ratio was 1∶1 as the final GI was only 0.45. In conclusion, the designed aerobic composting equipment was used for the first time to simultaneously treat brewery distiller′s grain and brewery sludge to produce organic fertilizer, which provides a new and effective method for solving such solid waste problems.
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