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化工学报  2014 

紫外/氯耦合处理饮用水中氨氮的响应面优化

DOI: 10.3969/j.issn.0438-1157.2014.03.039, PP. 1049-1055

Keywords: 光化学,优化,数学模拟,紫外/氯耦合,氨氮去除,中心复合设计

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Abstract:

基于响应面优化法,研究紫外/氯耦合处理饮用水中氨氮的效能。考察氯氮质量比、紫外辐射时间和pH值3个影响因素及其交互作用对氨氮去除的影响,采用二阶方程进行数学模拟,并优化工艺条件。结果表明,紫外/氯耦合技术能有效去除氨氮,三因素均对氨氮的去除影响显著,各因素的交互作用也显著存在。数学拟合模型的相关系数较高(R2=0.992),模型回归性好。满足饮用水氨氮出水要求(0.5mg·L-1)的最优工艺条件为:氯氮质量比4.00,紫外辐射时间6.00min和pH值7.5。验证实验结果与预测值的偏差仅为0.64%,响应面拟合方程可用于氨氮去除率的预测和最优工艺条件的确定。紫外/氯耦合技术是一种新型的氨氮去除方法,具有投药量小、去除效率高、操作简单等优点。

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