粉煤灰处理含氟废水的实验研究

The treatment of fluoride-containing wastewater by fly ash

对粉煤灰处理含氟废水的各种影响因素进行了研究。结果表明粉煤灰体系在最佳处理条件下 :灰水比为 1 :2 0 ,pH值为 3 ,搅拌时间为 3 5min ,可使含氟 2 60mg/L的废水的除氟率达 68.3 %。用此法处理含氟废水工艺简单 ,操作方便 ,成本低廉。

Removal of waste water containing fluoride by fly ash was studied .The results demonstrated the best condition is : pH=3,ratio of fly ash and water 1∶20,reaction time 35 minutes. When treated , the removal of fluoride reached 63.8%. Meanwhile this method is simple for operation and has lower operational cost .