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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (20): 353-356.

所属专题： 现代农业发展与乡村振兴

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

钙盐沉淀法处理农村含氟饮用水试验

薛力 呼世斌   

  • 收稿日期:2010-07-12 修回日期:2010-08-14 出版日期:2010-10-20 发布日期:2010-10-20

The Treatment of Calcium Precipitation on Fluoride Drinking Water in Rural Areas

  • Received:2010-07-12 Revised:2010-08-14 Online:2010-10-20 Published:2010-10-20

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摘要：

采用钙盐沉淀法，研究氯化钙投加量，pH值和静置时间三个因素对除氟效果的影响，确定最优的除氟条件；试验在不同氯化钙投加量(分别为100％、150％、200％、250％)下，分析静置时间和反应pH值对除氟的影响；通过试验，确定出三因素的最佳组合为氯化钙的投加量为250%，pH 8.5，静置时间最少50min。在该条件下，可将水中的氟离子浓度由20mg/L降低到7 mg/L左右；应用此方法可以有效减轻地方性氟中毒。

关键词: 柳兰, 柳兰, 褐化, 生根, 增殖

Abstract:

By means of calcium precipitation, the effects of calcium chloride dosage, pH and standing time on fluoride remove were studied in order to optimize the parameters. Under different dosage of calcium chloride (at 100%, 150%, 200%, 250%, respectively), the effects of pH and standing time on fluoride were analyzed. The results showed that, three factors of the best combination were calcium chloride dosage of 250%, pH 8.5, standing time at least 50min,and under this condition, the concentration of fluoride was reduced from 20mg/L to 7mg/L; therefore, the application of this method can effectively reduce endemic fluorosis in rural areas.