气质联用测定超声波降解废水中的苯酚含量及机理研究

采用GC-MS分析了水中苯酚在通氧条件和未通氧条件下的超声波降解过程.通过分解产物考查了苯酚在水中的超声波降解机理.分析结果表明,复合氧化工艺过程US/O2中比在单独超声波辐射(US)氧化下的苯酚去除率有所提高,说明协同效应存在.在相同的降解时间下,有氧降解比无氧降解苯酚去的除率高出2%～4%,并在降解中间产物检测到了乙酸乙酯.

Using GC-MS to Analyze the Degradation of Phenol in Waste-water by Ultrasonic Wave

This paper describes the analysis of the degradation process of phenol in wastewater with ultrasonic wave techniques, as well as the degradation mechanism, with oxygen-used and oxygen-free by GC-MS method. The results show that the US/O_2 technology is superior to single US technology in the degradation of phenol. The removal rate of phenol by using US/O_2 is 2%～4% higher than that by using single US under the same condition. This can be explained by the synergetic effect of US/O_2. From the GC-MS of the products during the degradation process, the intermediate product detected is mainly ethyl acetate.