冶炼综合废水电化学法脱氮处理

来源期刊：有色金属2010年第3期

论文作者：杨晓松 邵立南

文章页码：146 - 148

关键词：环境工程； 冶炼综合废水； 电化学方法； 氨氮废水

Key words：environment engineering； smelting comprehensive waste water； electrochemical process； ammonia nitrogen waste water

摘    要：针对当前各种冶炼综合废水中氨氮处理方法存在的问题,通过试验系统研究电化学法脱氮的最佳运行参数和去除机理。结果表明,最佳工艺参数为投氯比为1∶5和电流强度为1.7A。运行费用为6.9元/t,与物化法、吹脱法等相比具有处理效率高、运行费用低、设备占地面积小等综合优势。电化学法脱氮中,"活性氯"(OCl^-)与氨氮发生的反应起主导作用。

Abstract: The optimal technical parameters and mechanism of ammonia removal with electrochemical process are investigated by experiments with the aim to solving the various problems in ammonia removal methods for smelting comprehensive waste water.The results show that the optimal adding chlorine ratio and current intensity,are 1∶5 and 1.7A,respectively.Operating cost is 6.9 yuan/m³.Compared with physical-chemical process and air stripping,electrochemical process has advantages such as high efficiency,low operating cost and little floor space.The reaction between OCl^- and ammonia plays an important part in the ammonia removal with electrochemical process.