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介绍５０Ｌ气升式发酵罐用于生物肥料发酵生产的工业性试验。采用菌体光密度、活菌数等指标对细菌的生长情况进行了测定，并用溶氧电极法对该设备的传质性能进行测定。证明用５０Ｌ气升式发酵罐发酵生产生物肥工业化是可行的。
Introduce 50L airlift fermenter for industrial test of biofertilizer fermentation. The bacterial growth was measured by the density of bacteria and the number of viable cells. The mass transfer performance of the device was also measured by the electrode of dissolved oxygen. It is feasible to use 50L airlift fermenter to produce bio-fertilizer by fermentation.