本文利用激光粒径分析仪，研究了在鼓泡塔反应器中电解质溶液对气泡大小的影响。实验结果表明，气泡表面吸附电解质离子后改变了气泡表面的性质，抑制了气泡的聚并，使气泡的平均直径减小。还发现气泡大小与电解质溶液的离子强度有关，而与离子的类型关系不大，并得到气泡直径与离子强度的关联式。 In this paper, the effect of electrolyte solution on bubble size in a bubble column reactor was studied using a laser particle size analyzer. The experimental results show that the adsorption of electrolyte ions on the surface of the bubbles changes the properties of the surface of the bubbles, inhibits the aggregation of the bubbles and reduces the average diameter of the bubbles. It is also found that the bubble size is related to the ionic strength of the electrolyte solution, but not to the type of ions, and the correlation between bubble diameter and ionic strength is obtained.