通过自行搭建的微气泡粒径在线测量评价平台与气浮柱处理含油污水实验平台，系统讨论了微孔材料孔径对所产生的微气泡粒径分布以及含油污水处理效果的影响。研究结果表明，微孔材料表面的微孔本质上由材料按压成型后自然形成的不规则微孔通道，并非均匀且排列整齐分布；当微孔孔径分别为0.2、1.0、3.0 μm时，产生的微气泡平均粒径分别为39.42、43.89、45.07 μm，微孔孔径越小，产生的微气泡平均粒径越小，越有利于油水分离效率的提高。

The effects of micro-porous material pore diameter on the generated micro bubble diameter and treatment efficiency of oily sewage are researched through using the online measurement and evaluation system of micro bubble diameter and the experimental system for oily sewage treatment by flotation column.The experimental results show that the micro-pores on the surface of micro-porous medium are essentially irregular pore channels naturally formed by pressing modeling of materials,which is far from uniform or orderly distribution.When the micro-pores diameter are 0.2 μm,1 μm and 3 μm,the average diameters of the micro bubbles generated are 39.42 μm,43.89 μm and 45.07 μm respectively.The smaller the micro-pore diameter,the smaller the average diameter of micro bubble is,and the more conducive to the improvement of oil-water separation efficiency.

蔡小垒(1987-),男,博士生,研究方向为油气水多相流高效分离技术与设备