含钼废水处理的研究进展

Research Progress in Treatment of Molybdenum-containing Wastewater

钼资源在我国储量丰富,于水中多以钼酸盐的形式存在。钼是人体必需的微量元素,但是过量的钼元素却对动植物体危害极大,因此我们必须采用经济高效的方法来去除废水中的钼酸盐。目前国内外研究较多的是采用化学沉淀法来去除废水中的钼酸盐,同时,人工湿地法与吸附法都有一定的研究,离子交换法也是一种去除水中钼酸盐有效的方法,但是由于其成本较高,所以很难大面积的投入使用。铁钼共沉淀法是一种有效的去除废水中钼酸盐的方法,pH和铁钼比是该方法除钼效果的关键因素。

Molybdenum resource is abundant in our country,and the form of molybdenum in the water is molybdate.Molybdenum is art essential element in human body,but too much molybdenum is great harm to animals and plants,so we must remove the molybdate from waste water by an economic and efficiency method.At present,chemical precipitation method is widely used to remove the molybdate.Meanwhile,there are some studies on artificial wetland and adsorption.Of course,the ion exchange method is an effective method to remove molybdate,due to its high cost it is difficult to put into use in a large area.The iron-molybdenum co-precipitation method is an effective method for removing molybdate from wastewater,the pH and iron-molybdenum ratio are the key factors for the molybdenum removal effect.