【摘要】 以偶氮染料阳离子红X-GRL为模拟污染物,采用单因素法筛选出温度、氧气分压、搅拌速度、pH、染料质量浓度5个相对重要的影响因素,利用响应面法在60~180℃、氧气分压为0~2倍理论需氧量、搅拌速度为100~700 r/min、pH值为2~10、染料质量浓度为500~2 931 mg/L范围内探讨了操作条件对染料去除率的影响,并分析了这些影响因素之间的相互作用.采用响应面法对实验结果进行了模型拟和,并对模型进行了实验验证.结果表明,响应面法的预测值与实验值吻合较好,在通过响应面法得到的优化工艺条件下处理X-GRL废水,染料去除率接近100%.更多还原

【Abstract】 Response surface methodology(RSM) was used to model and optimize the wet air oxidation process using one azo dye cationic red X-GRL as model pollutant.Mono-factor experiments were carried out to select the relatively important factors,based on which the process was optimized by RSM under the following conditions: 60～180 ℃,0～2 stoichiometric oxygen amount,100~700 r/min agitating rate,pH 2～10 and 500～2 931 mg/L pollutant.Then the optimized model was achieved and the interactions between the operation factors were systematically discussed.Additional experiments were performed to check the model,which showed that the predicted values agreed well with the experimental results.Almost 100% of the dye removal rate was obtained under the optimized operation conditions by RSM.更多还原