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响应面法优化UV/H2O2光氧化法处理高浓度LAS废水

Keywords: LAS废水,UV/H2O2,响应面法

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Abstract:

采用响应面法对UV/H2O2光氧化法处理高浓度LAS废水的工艺参数进行了系统研究。根据Box-BehnkenDesign(BBD)设计原理,以初始pH与H2O2投加量、反应时间和温度为主要影响因素,设计4因素3水平共29个实验点的实验方案,并建立了二次响应面拟合模型。方差分析表明,初始pH与H2O2投加量、反应时间和温度以及初始pH和H2O2投加量、H2O2投加量和温度之间的交互作用,对实验结果具有显著性影响。实验得到的光氧化高浓度LAS废水最佳工艺条件,pH为4.0,H2O2投加量为40mmol/L,反应时间为90min,温度为25℃,在此条件下,LAS的平均去除率为98.1%。

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