水生植物修复氮、磷污染水体研究进展

氮、磷是引起水体富营养化、导致水质恶化的重要因素,因此去除氮、磷一直是污水处理的重要任务.鉴于传统物理、化学方法存在的操作难、成本高、易产生二次污染等问题,人们越来越多地将目光转向利用水生植物去除氮、磷营养物质、净化水质上.介绍了近年来国内外应用水生植物修复氮、磷污染水体的方法、效果及其影响因素,探讨了水生植物净化污染水体的机制.针对目前研究中的不足,提出今后应在不同植物种类开发、植物组合优化以及植物的净化机制等方面加强研究.

Research advances on phytoremediation of nitrogen and phosphorus polluted water by aquatic macrophytes

Nitrogen and phosphorus are important factors causing eutrophication of water system and leading to deterioration of water quality,so the removal of nitrogen and phosphorus has always been an important task in wastewater treatment.In view of the problems brought by traditional physical and chemical methods,such as difficult operation,high costs and easy to produce second-pollution,people gradually pay more attention to the phytoremediation technique,which primary use the plants,animals and microbes for nutrient removal and water purification.The latest research achievement both at home and abroad on the polluted water purification by phytoremediation is summarized including the treatment performance and influence factors;the restoration mechanism of phytoremediation is also discussed.The future research directions should be focus on developing different vegetation species,optimization of plant composition and purification mechanism of aquatic plants.