基于响应曲面法的US/UV/Fenton联合处理抗生素制药废水优化  

Application of response surface methodology for optimization of US/UV/Fenton combination process for antibiotic pharmaceutical wastewater

作　　者：高爱舫[1,2] 李爱国[1] 张莹[1] 崔京华[3] 

机构地区：[1]石家庄经济学院水资源与环境学院,石家庄050031 [2]河北省水资源可持续利用与开发重点实验室,石家庄050031 [3]河北化工医药职业技术学院机电工程系,石家庄050026

出　　处：《安全与环境学报》2014年第3期180-183,共4页Journal of Safety and Environment

基　　金：河北省高等学校科学技术研究优秀青年基金项目(Y2011110);河北省首批青年拔尖人才计划项目

摘　　要：利用US/UV/Fenton联合技术处理抗生素制药废水,选择FeSO4投加量、紫外光照射时间和超声波时间为自变量,以废水COD去除率为响应值,基于Box-Behnken响应曲面法,研究了各变量及交互作用对制药废水COD去除率的影响,并通过对回归方程的求解和响应曲面分析得到多元二次多项式方程的预测模型。结果表明,FeSO4投加量、紫外光照射时间和超声波时间与COD去除率存在显著的相关性,各影响因子显著性由高到低为超声波时间、紫外光光照时间、FeSO4投加量,FeSO4投加量与超声波时间的交互作用显著。所得预测模型回归性好,预测废水最大COD去除率为75.3%,最佳条件组合为:FeSO4投加量0.01 mol/L,紫外光照射90 min,超声波120 min。在此条件下进行验证试验,实际值与模型预测值具有良好的一致性,偏差为0.58%。The present paper is engaged in a study on the removal rate of COD of antibiotic pharmaceutical wastewater by ultrasound/ultraviolet/Fenton combination process. As is known, US/UV/Fenton hybrid method is an effective process in reducing COD and enhancing the economic efficiency and feasibility of the biological techniques. The US/UV/Fenton process was influenced by various factors. Therefore, it is really of great need to optimize the reaction conditions in hoping to obtain the maximum COD removal efficiency. To achieve the said objectives, we have made an investigation of the effects of the independent variables and their interactions on the removal rate of COD of antibiotic pharmaceutical wastewater with the US/UV/Fenton combination method and the response surface method. In proceeding with our research, we have selected the FeSO 4 dosage, the ultrasound time and UV irradiation time as the three independent variables, and have chosen the removal rate of COD of wastewater as the response value. Furthermore, we have developed a predictive polynomial quadratic equation model by analyzing the response surface plots and their corresponding contour plots and solving the quadratic equation. In conclusion, we have found the predicted model of highly significant correlation （ p 〈0.0001）. What is more important, the ANOVA and the response surface analysis results indicate that the factors we have selected are significantly correlated with the removal rate of COD of wastewater, which tends to follow the descending order： ultrasound time 〉UV irradiation time 〉the FeSO 4 concentration with the combined effect of ultrasound time and the FeSO 4 dosage being remarkable.In the optimal reaction conditions, the highest COD removal rate can be made as high as to 75.3%. Moreover, it has been made sure that the optimal conditions of US/UV/Fenton process can be determined by using the ultrasonic time in 120 min, the UV irradiation time in 90 min and the FeSO 4 concentration being 0.01 mol/L. And, the last, but not the lea

关 键 词：环境工程学 抗生素类制药废水 US UV Fenton联合处理 响应曲面法 方差分析 

分 类 号：X787[环境科学与工程—环境工程]