新型微电解联合催化氧化处理高浓度制药废水

研究了利用新型多元微电解联合催化氧化技术处理高浓度制药废水。在制药废水pH=3.5时,随着微电解处理停留时间的延长,其COD去除率不断上升,最高可达60%。催化氧化过程中使用双氧水为氧化剂,最佳添加量和反应pH分别为0.2%、3.0。为保证微电解稳定高效,进行了两级微电解+催化氧化处理制药废水的中试研究。结果表明,两级微电解耦合催化氧化处理制药废水中试COD去除效果稳定,微电解停留3 h时,最高去除率可达68.5%。

New type of micro-electrolysis combined with catalytic oxidation for the treatment of highly concentration pharmaceutical wastewater

The application of a new type of diversified micro-electrolysis combined with catalytic oxidation process to the treatment of highly concentrated pharmaceutical wastewater has been studied. When the wastewater pH is 3.5 , the COD removing rate increases continuously with the extension of staying time of micro-electrolysis(ME). The re-moving rate can be as high as 60%. In the process of catalytic oxidation ,hydrogen peroxide is used as the oxidant , and the optimal dosage is 0.2%and pH is 3.0. Furthermore,to ensure that ME is stable and highly efficient,a research on a'two-step ME+catalytic oxidation' pilot test has been carried out. The final results show that the COD treatment effect of this process is stable. When the staying time of ME is 3 h ,the highest removing rate can reach 68.5%.