The results showed that the produce of butyric acid culminate in the column 19,while that of caproic acid in the column 22.The number of the microbe was maximun in the column 7,while on the column 19,it was minimum,following an ascend trend.

• 结果发现,丁酸在19号柱达到峰值,己酸在22号柱达到峰值; 微生物数量在7号柱达到峰值后下降,在19号柱最低,随后又有上升趋势;