中文摘要：

针对现有超声协同臭氧降解农药的研究多集中在20kHz至50kHz的频段内，而效果一直不够理想，以及目前民用的超声协同臭氧蔬果药残降解装置较少的问题，设计了一种160kHz超声协同臭氧蔬果药残降解仪。超声波发生器采用SG3525芯片驱动半桥式功率放大电路，并运用小范围扫频技术。臭氧发生器使用市场上量产的小型臭氧机。本文利用该降解仪进行了乙酰甲胺磷农药降解实验，对160kHz超声波协同臭氧的农药降解效果进行了初步研究，结果表明仪器对降解乙酰甲胺磷有效。

英文摘要：

Ultrasonic/O3 combined process was employed to degrade pesticide wastewater with low frequency ultrasound （from 20 to 50 kHz） in the past few years. But the inefficiency of this process hindered its popularization in civilian fields. Medium frequency ultrasound has better effectiveness in sonochemistry. Thus, a vegetable ＆ fruit cleaning device with 160 kHz ultrasonic and ozone combined was investigated and designed in this paper. The half-bridge power amplifier circuit driven by SG3525 chip and the small range frequency sweep technology were used on ultrasonic generator of this deVice. The ozone generator of this device was made by a kind of mass-produced small ozone machine on the market. Experiments were conducted to degrade acephate utilizing this device. The results preliminarily demonstrated the feasibility of pesticide degradation using 160 kHz ultrasound and ozone, and verified the effectiveness of this device.