膜分离技术处理钼酸铵废水的研究

Study on the Separation of Ammonium Molybdate Wastewater by Membrane Technology

钼是稀有金属。生产钼酸铵的废水直接排放不仅造成大量钼资源的流失,而且还严重污染环境。膜分离技术处理钼酸铵废水具有分离效果好、占地小、操作简单、安全环保等优点。通过对在相同压力下钼酸铵溶液经陶瓷膜分离和荷负电膜分离时通量的变化,说明钼酸铵溶液经陶瓷膜和荷负电膜串联分离情况下,陶瓷膜通量比单用大些,荷负电膜变化不明显,但这一情况是在料液已被陶瓷膜分离过一次的基础上进行的,所以串联分离效果比单独使用好。这些研究对改进钼酸铵废水处理生产工艺、降低生产成本具有积极的意义。

Molyhdenum is a valuable metal. The wastewater from the production of ammonium molybdate can not only waste the molybdenum resources, but also pollute the environment. Due to its excellent properties and feasible process, membrane technology is considered as one of the production of ammonium molybdate by means of membrane technology is described in this paper, mainly focused on the technique derived from inorganic and negatively charged membranes. The experimental results offer some techniques to solve the current problem. Based on the results obtained from this experi- ment, a feasible technology to treat a large amount of wastewater is proposed, which will be useful application prospects for the utilization of renewable resources, the protection of natural environment and the recovery of molybdenum re- sources, etc.