超声脱附──离子交换树脂再生新技术的研究

本文研究了用超声波强化再生阴离子交换树脂的工艺技术，发现在一定功率和频率下，色素的解吸速度大大提高。根据合成树脂稳定性的特点，选择高频低功率工作状态，以保证树脂不会因为超声空化作用引起破损。超声脱附适合在低温通气的液体介质中操作。没有超声波作用的色素脱附受到微孔扩散速率的制约，超声波的涡流能增大微孔扩散速度。

Ultrasonic Desorption-A New Regenersition Technology

The feasibility of using ultrasonic technology to enhance the difficult desorption of colorants from polymeric resin is discussed. It shows that the desorption rates of colorants are significantly increased by ultrasound at certain power and frequency. According to the feature of polymeric resin high frequency with low power ultrasound is selected to avoid the breakage of resin. The ultrasonic desorption is favored by decrease in temperature, aerated liquid mediun. The desorption rate obtained without ultrasound appeares to be limited by pore diffusion. The rate can be increased by acoustic vortex.