摘要
通过采用静态吸附微污染废水实验,研究了沸石对砷和氟的吸附性能,考察了接触时间、吸附剂量、初始浓度和pH值对沸石吸附能力的影响,实验表明,沸石对污染物砷和氟的最佳吸附时间为60 min;沸石较佳的用量为2 g;沸石对于砷和氟的吸附在低浓度条件下比高浓度下效果要好,沸石较适合于处理低浓度的微污染原水。酸度是吸附的重要影响因素,随着pH值增大去除率升高,但是考虑到成本、腐蚀设备等因素,在实验中不调pH值。
In this paper,the adsorption characteristics of zeolite to arsenic and fluorine were researched in static adsorption experiments,and the influence of contact time,sorbent dosage,initial concentration and pH on the adsorption characteristics were researched.The result showed that the optimal processes are based on the following condition：adsorption time is 60 min,and sorbent dosage is 2 g.Adsorption characteristics of zeolite to arsenic and fluorine are better in lower initial concentration,and zeolite is fit to deal with source water.The acidity is important influencing factor to adsorption characteristics,and pH and the removal ratio increase at the same time.But considering the cost and equipment erode,pH is not altered in adsorption experiments.
出处
《应用化工》
CAS
CSCD
2010年第9期1341-1344,1347,共5页
Applied Chemical Industry
关键词
沸石
砷
氟
微污染废水
zeolite
arsenic
fluorine
micro-polluted waste water
