摘要
报道了用超声波降解摸拟废水中低浓度乐果的试验 ,探讨了超声波辐射时间、外加H2 O2 、溶液中乐果的初始浓度、溶液温度等因素对乐果降解效果的影响。试验表明 ,辐射时间延长 ,降解率增加 ;加入H2 O2 可明显提高乐果的降解率 ;在溶液初始浓度较低的范围内 ,降解速率随浓度增大而加快 ,浓度增大到一定值后 ,降解速率变化不明显 ;超声降解时溶液温度控制在 1 5～
A test for decomposing low concentration Dimethoate in simulated wastewater by ultrasonic wave is introduced.The effects of irradiation time,dosages of H 2O 2,initial concentration of Dimethoate and temperature on decomposition were explored.The results show that the longer irradiation time is ,the higher the degradation efficiency is;the degradation efficiency increases obviously with adding H 2O 2; in the lower concentration range of Dimethoate solution,the degradation efficicncy is enhancing with the increase of concentration;and the suitable temperature for degradation is between 15-16℃.
