水生植物在水污染控制中的应用与发展

Application and Advance of Aquatic Plants in Water Pollution Control

利用水生植物净化污水具有投资、维护和运行费用低,管理简便,污水处理效果好,可改善和恢复生态环境、回收资源和能源以及收获经济植物等优点,是一种低成本高效益的生态工程技术,在污水处理和富营养化水体净化等方面均表现出良好的效果,引起国内外专家关注.介绍了凤眼莲、芦苇、水花生、香蒲、水葱和大薸等几种应用较广泛的水生植物对不同类型污水的净化效果,指出了目前水生植物处理系统中存在的问题,提出了今后的发展方向.

Wastewater treatment system based on aquatic plant is an ecological engineering technology characterized by less dissipation of energy, low investment, economical operation, simple administration, high efficiency, utilizable by-products and so on. It is considered that the aquatic plants have vast prospects in water pollution control. Eichhornia crassipses, Phragmites communis, Alternanthera philoxeroides, Typha spp. , Scirpus validus and Pistia stratiotes are several kinds of aquatic plants that are widely used. In this paper the purification efficiency of these plants on different kinds of wastewater are discussed and the research trends of aquatic plants in wastewater treatment are predicted. The study of this technology should be strengthened.