摘要
饮水中氟化物的含量对人体的健康有重大影响,饮水中最佳的氟含量是介于0.5～1.0 mg/L之间.利用静态实验,研究了硅藻土对天津市某地区含氟浓度为4.22 mg/L的地下水中氟离子的吸附能力以及pH值、硅藻土投加量、聚合氯化铝投加量、搅拌时间、初始氟浓度对除氟效果的影响.结果表明:硅藻土在原水pH值为6,硅藻土投加量为3.0 g/L,搅拌15 min时达到最佳氟吸附效果,去除率达到97.18%.减少硅藻土投加量可提高其吸附量,最大可以达到1.78 mg/g,此时氟的平衡浓度为0.662 mg/L,证明了硅藻土在饮水除氟上有巨大的应用潜力.
The concentration of fluoride in drinking water has very important effect on human health and the optimal fluo-ride content is within the range of 0.5–1.0 mg/L.The adsorptive capability of diatomite to fluoride in groundwater some-where in Tianjin with concentration of 4.217 mg/L was studied.The influence of pH valve,diatomite dose,poly aluminum chloride dose,contact time and initial concentration on defluoride was investigated by static experiment.The results showed that the optimum defluoride turned up wh...
出处
《天津城市建设学院学报》
CAS
2008年第3期194-196,218,共4页
Journal of Tianjin Institute of Urban Construction
关键词
硅藻土
吸附
除氟
Diatomite
adsorption
defluoride
