改性海泡石-粉煤灰协同处理农村含氟水的效果

Effect of Sepiolite Cooperated-Powder Coal Treated Fluoride from Wastewater

常规除氟方法由于受技术操作、管理运行等要求影响,不宜在农村推广使用。采用改性海泡石-粉煤灰协同处理含氟水,探讨了各种因素对含氟水处理效果的影响。结果表明,处理的最佳条件为温度20℃、处理时间25 min、pH值为5.6～5.8,在此条件下处理含氟水,除氟率达96%,水中含氟量远低于国家标准,处理效果良好。

Defluoridation conventional methods because of technical operations,managing the impact of running,etc.,should not be used in rural areas.In this paper,the study on treatment of modified sepiolite-powdered coal ash on removal fluoride from wastewater was conducted.The experiment indicated that the processing effect was good when the room temperature was 20℃,reaction time was 25 min,pH was 5.6-5.8 and the amount of the sepiolite-powdered coal ash was 200 mg per 50mL wastewater, the residual fluorine ion electric potential value was for-550mV,the corresponding fluorine ion concentration was 0.009mg/L which was lower than the national standards further.