摘要
本文报道了功率超声诱导化学降解低浓度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pH值、外加Fe^2+或H_2O_2等因素对其超声化学降解的影响.试验结果表明,甲胺磷水溶液的初始浓度为1.0×10^(-4)mol·l^(-1),pH_0为2.5,介质温度30℃,Fe^2+加入量为50mg·I^(-1),溶液中充入氧气饱和,经80W·cm^(-20)功率超声辐射2h,其COD_(cr)平均去除率达99.3%,甲胺磷的平均降解率为99.6%.
A new method of ultrasonic destruction of simulated wastewater containing methamidophos was reported. The effects of power intensity, sonication time, medium temperature, initial pH, Fe2+ and H2O2 on ultrasonic destruction of wastewater containing methamidophos were studied. The result showed that the average of removal rate of CODCr and methamidophos could reach 99.3% and 99.6% under the reaction conditions. The reaction conditions were as following: initial concentration of methamidophos was 1.0×10-4mol·l-1, pHo was 2.5, medium temperature was 30℃, power intenity was 80W·cm-2, sonication time was 2h, the weight of Fe2+ was 50mg·l-1 , the solution was saturated by oxygen.
出处
《环境化学》
CAS
CSCD
北大核心
2000年第1期84-87,共4页
Environmental Chemistry
关键词
甲胺磷
农药
声化学降解
废水处理
超声波诱导
methamidophos, wastewater, sonochemistry decomposition, ultrasonic wave, effect of sound cavitation.
