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为了去除饮用水中的有毒有害有机物,以苯酚为目标物,采用强电离放电技术产生高质量浓度羟基自由基(·OH)等活性粒子来处理含苯酚饮用水,研究了苯酚初始质量浓度、羟基溶液比值质量浓度和水温这3个因素在静态实验中对苯酚降解效率的影响,并分析了苯酚降解的反应动力学和上述3个因素对苯酚降解速率的影响;通过中试实验考察了苯酚降解效率随注入功率和处理时间变化的规律。实验结果表明:·OH等活性粒子对苯酚氧化降解反应符合表观拟1级动力学,苯酚降解效率和苯酚降解速率随羟基溶液比值质量浓度增加而提高,随苯酚初始质量浓度增加而降低,水温对苯酚降解效率影响较小;在中试实验中,提高注入功率可提高苯酚降解效率,当注入功率为600 W、处理时间为5 min时,通过高效液相色谱法(HPLC)未检测到饮用水中的苯酚及其降解的中间产物,苯酚降解效率高达100.00%。
In order to remove the toxic and harmful organic compounds in drinking water, phenol was used as the target substance, strong ionization discharge technology was used to produce high-concentration hydroxyl radical (· OH) and other active particles to treat phenol-containing drinking water. The effects of initial concentration of phenol, Solution ratio of mass concentration and water temperature of these three factors in the static experiment on the phenol degradation efficiency, and analysis of the reaction kinetics of phenol degradation and the above three factors on the phenol degradation rate; through the pilot test was investigated phenol degradation The efficiency changes with the injection power and processing time. The experimental results showed that the oxidation kinetics of · OH such as OH was in accordance with the apparent first order kinetics. The phenol degradation efficiency and phenol degradation rate increased with the increase of the concentration of hydroxyl solution, but decreased with the increase of initial phenol concentration. The phenol degradation efficiency was less affected. In the pilot experiment, increasing the injection power could improve the phenol degradation efficiency. When the injection power was 600 W and the treatment time was 5 min, no drinking was detected by high performance liquid chromatography (HPLC) Phenol in water and its degradation intermediates, phenol degradation efficiency as high as 100.00%.