人工浮岛技术及其应用

ARTIFICIAL FLOATING ISLAND TECHNOLOGY AND ITS APPLIED RESEARCH

人工浮岛是一种生长有水生植物或陆生植物的漂浮结构,由于其独特的特点,能够被应用于多种类型的滨水区,且能提供重要的生态功能。人工浮岛单元易于调整空间配置形式,固定方式多样。太湖五里湖的工程实例表明:(1)人工浮岛上植物生长迅速,很快就能形成美丽的景观;(2)湖滨工程区内营养盐的浓度被大幅度消减,工程区内外透明度分别为80～120cm和40～50cm,浊度分别为15.9NTU和53.4NTU;(3)河口段浮岛边营养盐去除率为TP51.86%、TN39.64%、NH4+-N66.92%,浮岛撤除后,河口的净化效果变差,其对营养盐的去除率仅为TP18.2%、TN9.2%、NH4+-N27.8%。

Currently, restoration of aquatic macrophyte of shallow lakes is a difficult problem worldwide.The artificial floating island （AFI） is an artifi- cial floating platform vegetating various plants.Due to its unique features,AFI can be applied in various littoral,and provides important ecological functions.Spacial allocation of AFrs units can be easily changed,and there exist various anchoring modes of AFI＇s vegetation base.Through application cases of AFI in Wuli lake,Taihu Lake,the following conclusions can be drawn：（1 ）plants of AFI develop rapidly, and form beautiful landscape soon;（2） littoral AFI project can reduce concentration of nutrients of water body effectively,and transparency in the project area is 80- 120cm,40-50cm inside and outside the project area,turbidity 14.4NTU, 53.4NTU respectively; （3）nutrient removal rates beside AFI in estuary were TP 51.86%, TN 39.64%, NH^＋4-N 66.92%, while after withdrawing of AFI,purification effects of the estuary got worse,and its removal rate swere only TP 18.2%, TN 9.2%, NH^＋4-N 27.8%.