水中致嗅物电氧化处理法及机理研究

Study on Electrooxidation of Odorant Component in Water

文章研究了利用电氧化法处理南方某运河水中的致嗅物的氧化机理及影响致嗅物去除率的因素。研究了影响电氧化去除效果的电解时间、极板距离和电解电压。氧化时间存在一个最佳值,达到最佳值后再延长反应时间,致嗅物的去除率不变。在电极板距离相差不是很大的情况下,极板间距对致嗅物的去除率影响较小。电极电压对致嗅物的处理效果的影响是呈现随着电压增加致嗅物的去除率降低,达到12 V时,除嗅效果达到极限值,电压继续增加去除率略有所变化。从实验现象和数据可判断电氧化机理是直接氧化,是水分子在阳极表面产生OH自由基,OH对吸附在阳极表面的有机物产生氧化作用,从而将还原性致嗅物分解。

The electrooxidation was used to remove odor in water.The electrooxidation had a best reaction time,in which the reaction reached a equilibrium and the ratio of odor removal changed no more.Electrode plate interval had little effect on the ratio.Electrode voltage could greatly effect the ratio.Increasing with it the ratio decreased greatly until 12 V,then changed gently.So 12 V was the best value.The mechanism of electrooxidation was that the hydroxyl radicals were composed on anode,and then hydroxyl radicals reacted with odorant component.