功率超声波诱导降解水体中乙酰甲胺磷

STUDIES ON DEGRADATION OF ACEPHATE IN AQUEOUS SOLUTION BY ULTRASONIC IRRADIATION

本文报道了功率超声诱导化学降解低浓度乙酰甲胺磷农药模拟废水的新方法。考察了声强、辐射时间、介质温度、初始 p H值、外加 Fe2 + 或 H2 O2 等因素对其超声化学降解的影响。试验结果表明乙酰甲胺磷水溶液的初始浓度为 1 .0× 1 0 -4 - 1 0 .0× 1 0 -4 mol/L,p H为 2 .5～ 1 0 .8,介质温度30～ 35℃ ,Fe2 +的加入量为 1 5mg/L,溶液中充入氧气至饱和 ,经 40 W/cm2功率超声辐射 1 h,乙酰甲胺磷的平均降解率为 99.9%。

A new method of ultrasonic destruction of simulated wastewater containing Acephate was reported. The effects of power intensity, sonication time, medium temperature, initial pH, Fe 2+ and H 2O 2 on ultrasonic destruction of wastewater containing Acephate were studied. The results showed that the average value of removal rate of Acephate could reach 99.9% under the reaction conditions. The reaction conditions were as following: initial concentration of Acephate was 1.0×10 -4 -10.0×10 -4 mol/L, pH 0 was 2.5-10.8, medium temperature was 30℃, power intensity was 40W/cm 2, sonication time was 1h, the weight of Fe 2+ was 15mg/L, the solution was saturated by oxygen.