利用水生植物净化水体中的悬浮泥沙

针对特定的滨江城市水环境问题,利用湿地植物风车草(Cyperusalternifolius)、菖蒲(Gladiolushybridus)、菱(Vallisneriaspiralis)、金鱼藻(Ceratophyllumdemersum)、轮叶黑藻(Hydrillaverticillata)和亚洲苦草(Vallisneriaspiralis)构建的湿地植物生态物理模型进行了含沙水体泥沙净化的实验研究。结果表明,湿地植物系统对不同悬浮泥沙含量的水体具有不同的净化效果,净化效果最好的湿地植物分别是金鱼藻、黑藻、菱、菖蒲和风车草。随水体含沙量增加净化效果有所增强。不同粒径的悬浮泥沙在湿地植物群落中的沉降、吸附和过滤的效果不同。

STUDY ON DECONTAMINATION OF SUSPENDED SEDIMENT IN WATER BY HYDROPHYTES

Based on special urban environmental problem,ecological physical mode of decontamination for water with sediment is built with Cyperus alternifolius,Gladiolus hybridus,Vallisneria spiralis,Ceratophyllum demersum,Hydrilla verticillata and Vallisneria spiralis of a wetland.The result indicates that the plant ecosystem of the wetland has different decomtamination effect on the water body with different amount of suspended sediment; and the wetland plants with the best decomtamination effect are Ceratophyllum demersum,Hydrilla verticillata,Vallisneria spiralis,Gladiolus hybridus and Cyperus alternifolius.The sediments with different particle size sediment have different results when they pass through the hydrophytes ecosystem.