Fenton氧化法降解HMX废水中有机物的氧化反应动力学

Oxidation Reaction Kinetics of Degrading Organic Matter in HMX Wastewater by Fenton Oxidation Method

用Fenton氧化技术研究了降解HMX废水中有机物的工艺及氧化反应动力学。结果表明,适宜的降解工艺条件为:H2O2投加量2mol/L,H2O2与Fe2+摩尔比为40∶1,pH值为3,反应温度20℃,反应时间1.5h。在上述条件下HMX废水的COD去除率为68.5%。在研究的温度范围内,用Fenton氧化法降解HMX废水中有机物的氧化反应为一级反应,反应的活化能和指前因子分别为7.03kJ/mol和0.067 7min-1。

The technology and oxidation reaction kinetics ot degractmg orgamc studied by Fenton oxidation method. Results show that the appropriate degradation process conditions were deter- mined as： dosing quantity of H2O2 is 2tool/L, molar ratio of H2O2/Fe2＋ , 40 ： 1; pH value, 3, reaction tempera- ture 20℃ and reaction time 1. 5h. Under the above-mentioned conditions, the COD removal efficiency of HMX wastewater is 68.5%. The oxidation reaction of degrading organic matter in HMX wastewater with Fenton oxida- tion method in the studied temperature range is found to be of the first order. The activation energy and pre-exponen- tial factor of the reaction are 7.03 kJ/mol and 0. 067 7 min-1 , respectively.