改性沸石去除废水中氮和磷的机理与应用

摘要

沸石不仅在自然界中广泛分布,而且在水和废水处理中也得到广泛的应用.该文介绍了天然沸石的几种主要改性方法,包括物理改性、酸改性、碱改性、盐改性、稀土改性和有机阳离子表面活性剂改性.讨论了应用以上改性沸石去除废水中氮和磷的机理,回顾了改性沸石强化废水脱氮除磷效果的性能研究,并展望了改性沸石今后进一步的研究方向和应用前景.%Zeolite is widely distributed in nature and has been widely applied in the field of water and wastewater treatment. Several modification methods of natural zeolite, including physical modification, acid modification, alkali modification, salt rare earth modification and organic cationic surfactant modification was introduced in this paper. Trie mechanism of modified zeolite for nitrogen and phosphorus removal in wastewater was discussed. Modified zeolite enhancing the nitrogen and phosphorus removal performance of wastewater treatment processes was reviewed. The research and application prospects of modified zeolite were put forward as well.