湿式氧化工艺处理高浓度苯酚废水试验研究

以高浓度苯酚废水为研究对象,采用湿式氧化（WAO）工艺对其进行CODCr降解试验。考察了反应温度、反应压力、废水pH值、苯酚初始质量浓度及反应时间等对WAO处理效果的影响。在此基础上,采用正交试验方法获得了相应的工艺参数,在废水初始pH值为12,初始CODCr的质量浓度为20 000 mg/L,反应温度为240℃,反应压力为4 MPa,反应时间不少于80 min的条件下,CODCr去除率可达89%。研究结果可为含酚废水WAO处理工艺的工程设计提供依据。

Experimental research on wet air oxidation process treating high concentration phenol wastewater

With high concentration phenol wastewater as the research object, a test on wet air oxidation（WAO） process degrading CODCrwas carried out. The influences of reaction temperature, pressure and time, pH value of wastewater and initial mass concentration of phenol on the efficiency of WAO process were investigated.According to the test results, the corresponding technological parameters was obtained through an orthogonal experiment, which were： the initial pH value and mass concentration of CODCrof the wastewater were 12 and 20 000mg/L respectively, the temperature, pressure, and time of the reaction were 240 ℃, 4 MPa, and not shorter than80 min respectively, the removal rate of CODCrcould reach 89%. The study results could provide basis for engineering design of phenol-containing wastewater treatment using WAO process.