The device which was used for treating the waste water containing fluoride was reformed as follows: adding a water seal pot, replacing the vertical submerged pump by horizontal centrifugal pump which was made of high content tantiron and was linked with water seal pot. 对含氟废水处理装置进行了改造:增加水封罐,选用与水封罐相联的高硅铁卧式离心泵代替原立式液下泵。