【摘要】 利用计算机图像处理系统分析溶气气浮工艺中的气泡的性质。研究了气泡直径随操作压力、取样时间的变化规律,以及气泡大小对气浮处理效果的影响。结果发现,随着压力由250kPa增加至350kPa,气泡直径由120~180μm逐渐变小至60~90μm,气浮处理效果越来越好;随着停留时间由10min延长至30min,气泡直径逐渐由60~90μm变大至120~180μm,气浮处理效果反而越来越差。溶气压力为350kPa,分离时间为10min时,气浮效果最好。更多还原

【Abstract】 A computer image-processing system was used in studying the characteristics of the air bubbles in dissolved air floatation process. The rule of changes of the diameters of air bubbles with pressure and sampling time, as well as the effect of the sizes of air bubbles on the result of air floatation treatment were studied. The result showed that with the increasing of pressure from 250 kPa to 350 kPa, the diameters of air bubbles were gradually decreasing from 120~180 μm to 60~90 μm, the result of air floatation treatment becoming better and better; with the extension of the retention time from 10 minutes to 30 minutes, the diameters of air bubbles were gradually increasing from 60~90 μm to120~180 μm, while the result of air floatation treatment were getting poorer and poorer. The result of air floatation was the best when the pressure of dissolved air was 350 kPa and the time for separation was 10 minutes.更多还原