CaCl_2+磷酸盐法处理含氟废水的探讨

Discussion on Treating of Fluoric Wastewater by Cacl_2 and Phosphate

用向含氟废水中加入适量的钙盐和磷酸盐生成氟磷酸钙的方法除氟．结果表明，通过控制合适的ｐＨ值，钙盐和磷酸盐的投加量，反应时间和澄清时间，反应后可使氟的浓度降至５ｍｇ／Ｌ．

By adding Ca and phosphate into fluoric wastewater,fluorine can be taken out.The results show that by controlling right ph,amount of Ca and phosrhate reaction time and clarifing time,the concentration of fluorine in wastewater can be reduced down to 5 mg/l after reaction.