中文摘要：

臭氧在水和废水处理中的应用非常广泛。笔者综合研究了臭氧发生器关键控制参数对臭氧气泡尺寸、流速和臭氧溶解浓度的影响。结果表明,曝气头孔径越小,氧气源输出压力和氧气流速越低,产生的臭氧气泡越小,上升速度越慢,有利于提高臭氧溶解浓度。实验的最佳制备条件为：微孔曝气头,氧气输出压力为0.1 MPa,流量为0.5 L/min,温度为7℃。产生的气泡直径为1.30 mm,初始上升速度为0.18 m/s,平衡溶解质量浓度能达到（26.84±0.20）mg/L。

英文摘要：

Ozone has been widely adopted in water and wastewater treatment. In this study,the effects of key parameters of ozone generator on the ozone bubble size,flow rate and concentration is deeply discussed. The results show that smaller aerator aperture results in lower oxygen output pressure and flow rate,which consequently decreases the bubble size and bubble rising velocity. It is useful to improve the dissolved ozone concentration. The bubble diameter,initial rising velocity and dissolved ozone concentration can reach 1. 30 mm,0. 18 m / s and（ 26. 84 ± 0. 20） mg / L,respectively,under the following conditions： microporous aerator,an oxygen output pressure of 0. 1 MPa,a flow rate of0. 5 L / min and a temperature of 7℃.