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- Title
锌铝电极电絮凝法对含氟水除氟效果研究.
- Authors
徐越群; 刘 佳; 顾吉浩
- Abstract
The content of fluorine in drinking water has an important impact on human health. Compared with the commonly used methods of water treatment, the defluorination efficiency is low and the cost is high. Using self-made electroflocculation reaction tank, zinc electrode was introduced on the basis of electroflocculation with double aluminum electrode plate and the dynamic test of electroflocculation was carried out. The influence of different influent flow rate, ion concentration and pH on the defluorination effect and its change rule were studied when the electroflocculation method was used to treat drinking water with high fluorine content. The defluorination effect of zinc aluminum electrode and double aluminum electrode was compared. The results show that the defluorination effect is different. The influent flow rate and the hydraulic retention time in electrolyzer are different, which have certain influence to the effect of defluorination. When the influent flow rate is too fast, the concentration of fluoride ion in the water cannot he treated to meet the national drinking water standard; under the dynamic operation condition, the water sample with low fluoride ion content can be treated to meet the standard by the electric flocculation method, and when the fluoride ion content is high, the reaction needs to be adjusted compared with the double aluminum electrode, zinc aluminum electrode can not only effectively remove the fluoride ion in water, but also effectively reduce the COD concentration and turbidity of water. At the same time, it is pointed out that the electrolytic removal process of fluoride ion in water is synchronous with the loss process of electrode materials. In the process of electrocoagulation, measure such as changing the positive and negative electrodes of the electrode, reducing the thickness of the electrode plate and setting up a pH regulating tank are adopted to control the anode passivation process.
- Publication
Yellow River, 2021, Vol 43, Issue 5, p100
- ISSN
1000-1379
- Publication type
Article
- DOI
10.3969/j.issn.1000-1379.2021.05.019