过氧化氢工业生产污水处理

Treatment of hydrogen peroxide industrial production waste water

介绍了过氧化氢工业生产污水来源和常规处理方法,重点指出氢化塔、氢化白土床和后处理白土床吹扫蒸汽排水所产生的污水难处理的原因,并提出以下解决方法:先用碳酸钾处理悬浮于工作液之下、污水之上的油类絮凝物,可回收部分工作液,再通过明矾净水法结合碳酸钾法处理污水,将污水中的油类絮凝物或工作液油珠完全析出,转化为工作液。经过整个预处理过程,可获得满意的工作液回收效果,降低生产成本,且使污水的COD(化学需氧量)下降至3 000 mg/L以下,再配合过氧化氢催化氧化–絮凝法,易于达到污水排放标准。

The sources and common treatment methods of hydrogen peroxide industrial production waste water are introduced. The reason for difficultly treating the waste water produced from the steam sweeping of the hydrogenation tower, hydrogenation alumina bed and post-treatment alumina bed is emphatically pointed out. The following solutions are proposed： Firstly treating the oil floc floating under the working solution and above the waste water with potassium carbonate in order to recover part of the working solution, then treating the waste water with the combination of alum water purification method and the potassium carbonate method in order to precipitate completely the oil floc in the waste water or the oil bead of working solution and converting them into working solution. Through the whole pretreatment process, the satisfactory results for recovery of the working solution can be obtained. The production cost is reduced, and the COD （chemical oxygen demand） of the waste water decreases to below 3 000 mg/ L. Combining with the hydrogen peroxide catalytic oxidation-flocculation method, it is easy to achieve the discharging standard of the waste water.