钨冶炼离子交换工艺废水的治理

Treatment of Waste Water in Ion Exchange Craft of Wolfram Smelting

在钨冶炼的离子交换工序生产仲钨酸铵(APT)过程中,含钨料液经离子交换后产生大量的含砷含氨氮废水,碱度高,成份复杂,处理困难。文章介绍了钨冶炼离子交换工艺废水的治理工程实例,从方法与原理、工艺流程及效果、存在的问题与改进等方面作了说明。实践证明,采用“石灰-亚铁盐除砷、湿式催化氧化吹脱除氮联合工艺”可实现对APT生产废水的有效治理。

In the process of producing the ATP in the ion interchange craft of wolfram smelting, the liquid containing wolfram generates a great quantities of waste water after the ion exchange craft which contains the Arsenic and the Ammonia Nitrogen. The alkalinity of the water is high, the composition is complex and it is difficult to treat. The paper introduced an example of it and made descriptions from the method and priciple, the craft proeesses and the result, existent problems and improvement etc. The results show that adopting＂the line-ferrite oxidizes to blow to take off in addition to the Arsenic, wet type catalyst to unite the craft in addition to the Nitrogen＂ can realize the effective treatment of waste water in APT production.