响应曲面法优化电催化降解PNP废水运行条件  

Optimization of the Operating Conditions of Electrocatalytic Degradation of PNP Wastewater by Response Surface Methodology

作　　者：李大彬 LI Da-bin(Jingzhou Ecological Environment Monitoring Center,Department of Ecology and Environment of Hubei Province,Jingzhou 434023,China)

机构地区：[1]湖北省生态环境厅荆州生态环境监测中心,荆州434000

出　　处：《当代化工》2021年第7期1517-1521,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金(项目编号:2117326);湖北省自然科学基金重点项目(项目编号:2013CFA107)。

摘　　要：针对废水高毒性、可生化性差等特点,采用三维电催化氧化法处理PNP废水,重点考察电压、初始p H和反应时间对废水COD去除率的影响,并采用BBD响应曲面法优化运行条件。结果表明:运行条件的显著顺序为反应时间>电压>初始p H,其中反应时间和电压之间的交互作用显著。在电压为26.32 V、反应时间为80.63 min、pH为4.96的条件下,COD去除率的最大预测值为92.14%,与实际值89.72%的相对偏差仅为2.6%。The three-dimensional electrocatalytic oxidation method was used to treat p-nitrophenol wastewater with highly toxic and poorly biodegradable properties. The influence of voltage, initial pH and reaction time on the removal rate of COD was investigated. The Box-Behnken Design(BBD) of response surface method(RSM) was adopted to optimize the operating conditions. The results indicated that the significant order about operating conditions was as follows: reaction time>voltage>initial pH, and the interaction between reaction time and voltage was significant. The response surface method predicted that the maximum COD removal rate was 92.14%,whose relative deviation from the actual value of 89.72% was only 2.6%, when the voltage was 26.32, the reaction time was 80.63 min, and the pH was 4.96.

关 键 词：响应曲面法 PNP废水 三维电催化氧化 COD去除率 

分 类 号：X703.1[环境科学与工程—环境工程]