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Praseodymium was selected as a promoter for SnO2/Ti electrode to improve the electrocatalytic performance by electrodeposition in pharmaceutical wastewater treatment; the micrograph and the structure were characterized by SEM and XRD. Mixture uniform design was used in the optimization of the electrolytic conditions; mathematical model was established according to the rate of wiping COD off, which revealed the relationship between the current intensity, time of electrolysis, the amount of doped Pr, and the ratio of area (SnOJTi:Al). On the basis of the analysis of the empirical model, the optimized parameters had been obtained; the rate of wiping COD off was up to 94.9%, it decreased from 392 to 20 mg/L. Experimental results showed that the electrocatalytic performance of the electrode doped with Pr was superior for the treatment of pharmaceutical wastewater. 相似文献
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自2010年起,大港油田公司就将"天然气快发展"作为重要战略部署,天然气公司管道气、CNG、LNG业务快速拓展,员工队伍不断扩编。天然气公司车队员工也在快速递增,主要增量以外雇司机为主。针对外雇司机群体的特点,我们在工作中逐 相似文献
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均匀设计法在Pr改性SnO2/Ti电催化电极处理制药厂废水中的应用 总被引:1,自引:1,他引:0
为了提高制药厂废水处理效果,采用均匀设计方法优化自制Pr改性SnO_2/Ti电催化电极处理制药厂废水的降解条件。以COD去除率为考察指标,建立了COD去除率与电流强度、时间、Pr的掺杂量、面积比(SnO_2/Ti:Al)之间的数学模型。在回归分析的基础上,筛选出降解条件的优化参数,此时废水的COD去除率达94.9%。实验结果表明,采用均匀设计法得出最佳降解条件的配方,用Pr改性SnO_2/Ti电极和装置处理制药厂废水,处理效果良好。 相似文献
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近几年来,我国公路建设在设计与施工方面取得了很大的进步,还研究出了一批用于路基工程的新材料及新技术。路基强度是道路的根本,只有按照一定的施工工艺精心施工并采取合理的检测控制手段,才能保证施工的质量。文章将从施工测量、路基施工及其质量控制等方面来做具体的分析。 相似文献