摘要
采用铝酸钙粉,进行去除模拟废水中氟离子的条件研究,并进行了pH值、温度等多项条件的系列实验。实验得出,当氟离子浓度为215mg/L,反应溶液为200mL,反应温度是影响去除率的主要因素,去除主要发生在前15min,除氟主要依靠沉淀、络合等作用。pH为11,40℃时,投加量50g/L时,去除率可以达到95.7%以上,出水可直接达标。
Calcium aluminate was used to remove F-in simulated wastewater.The influence of dosage,temperature and pH on F-removal was investigated by conducting a series of batch experiments.Result showed that F-removal evidently depended on the factor of temperature with F-concentration of 215mg/L and solution volume of 200mL.The reaction took place mostly in 15 minutes,and precipitation and complexation were dominating mechanisms.F-removal efficiency was over 95.7% and up to the criteria when pH was 11,temperature 40℃ and dosage 50g/L.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2006年第7期87-88,96,共3页
Environmental Science & Technology
关键词
铝酸钙
氟离子
温度
沉淀络合
calcium aluminate
fluoride
temperature
precipitation and complexation
