响应面法优化Fenton处理高浓度制药废水  

Optimization of Fenton process of high-concentration pharmaceutical wastewater based on response surface methodology

作　　者：马金叶 黄星星 卢兆明 刘春 张国珍[1,2,3] MA Jin-ye;HUANG Xing-xing;LU Zhao-ming;LIU Chun;ZHANG Guo-zhen(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Key Laboratory of Yellow River Water Environment in Gansu Province,Lanzhou 730070,China;Engineering Research Center for Comprehensive Utilization of Water Resource in Cold and Arid Regions of Ministry of Education,Lanzhou 730070,China)

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]甘肃省黄河水环境重点实验室,甘肃兰州730070 [3]寒旱地区水资源综合利用教育部工程研究中心,甘肃兰州730070

出　　处：《应用化工》2022年第S02期62-67,共6页Applied Chemical Industry

基　　金：甘肃省科技重大专项计划项目(20ZD7FA005);饮用水中微塑料的污染特性及控制机理研究(52060012);兰州交通大学天佑创新团队(TY202005)。

摘　　要：针对兰州某药厂高浓度制药废水难生物降解的特点,采用Fenton法对其进行预处理,考察了H_(2)O_(2)投加量、n(H_(2)O_(2))∶n(Fe^(2+))、进水pH值、H_(2)O_(2)投加次数、反应时间对Fenton试剂氧化处理制药废水的影响。在此基础上,以制药废水中COD去除率为响应值,建立响应值与5个自变量的二次多项式方程模型。通过Box-Behnken响应曲面可知,双氧水投加量的影响最为显著。结果表明,Fenton试剂氧化处理制药废水的优化工艺条件为:H_(2)O_(2)投加量5 mL/L、投加次数3次、n(H_(2)O_(2))∶n(Fe^(2+))=12∶1、进水pH_(3)、反应时间90 min。经实验验证,响应面的预测值与实验值基本相符,研究结果表明Fenton法对高浓度制药废水中的有机物具有良好的去除效果。Aiming at the high-concentration pharmaceutical wastewater of a pharmaceutical factory in Lanzhou that is difficult to biodegrade,the Fenton method was used to pretreat it,and the H_(2)O_(2) dosage,n(H_(2)O_(2))∶n(Fe^(2+)),pH value of the influent water,H_(2)O_(2) dosing times and were investigated.On this basis,taking the COD removal rate in the pharmaceutical wastewater as the response value,a quadratic polynomial equation model with the response value and five independent variables was established.According to the Box-Behnken response surface,the influence of the dosage of hydrogen peroxide is the most significant.The results show that the optimal process conditions for Fenton reagent oxidetion treatment of pharmaceutical wastewater are:H_(2)O_(2) dosage 5 mL/L,n(H_(2)O_(2))∶n(Fe^(2+))=12∶1,inlet water pH_(3),H_(2)O_(2) dosage 3 times,reaction time 90 min.Verified by the experiment,the response predicted value is consistent with the experiment,the results showed that Fenton method for high concentration pharmaceutical wastewater has good removal effect of organic matter.

关 键 词：制药废水 FENTON氧化 响应面法 COD去除率 工艺优化 

分 类 号：X703.1[环境科学与工程—环境工程]