吸附法去除饮用水中砷的研究进展

Advances in research of arsenic removal from drinking water by adsorption

介绍砷的分布以及饮用水中砷超标的危害,综述当前国内外用不同吸附方法去除饮用水中砷的研究进展,分析其吸附性能和特点。结果表明,在归纳的6种吸附除砷方法中,复合材料与改性材料除砷效率高,处理费用低,目前最具有市场应用前景;活性材料的吸附效果受pH值控制;含铁矿物材料在除砷过程中易导致二次污染;纳米材料除砷效率最高,应是今后的主要发展方向。

The distribution of arsenic and its harms in drinking water were discussed. The removal of arsenic in drinking water by different adsorption techniques at home and abroad and the adsorption characteristics were reviewed. Results show that, among the six adsorption methods for arsenic removal, the method by composite materials and modified materials is of low cost and high removal efficiency, so it has the most marketable prospect; the removal efficiency by activated material is strongly affected by pH; the course of arsenic removal by ferrous minerals may easily lead to secondary contamination; nanometer materials is of the highest efficiency, so it would be the main arsenic removal material in future.