人工景观生态湖滨净化带植物的遴选

对水生植物处理生活污水的效果等展开了一些初步的研究。利用盆栽试验,比较了香蒲、美人蕉等8种水生植物的净化效果,所选的8种植物对污水均有不同程度的去除效果。挺水植物对污水的净化效果和耐污能力均优于沉水植物。利用水生植物处理生活污水,5 d的停留时间可以使污水达到较好的去除效果。挺水植物中美人蕉和水竹对污水的净化效果比香蒲和灯心草更好;沉水植物中伊乐藻的净化效果最好。植物对污水的净化效率有明显的季节差异,冬季污水净化效率低于夏秋两季,沉水植物在不同季节脱氮除磷效果有显著的差异。

Plant Selection for Artificial-Landscape Ecological Lakeside Zone

The eight macrophytes(Typha latifolia,Canna flaccida etc) were selected for purifying water in artificial-landscape ecological lakeside zone and all the selected macrophytes could help to remove the pollutants in wastewater in different extent.In total the emerging plants had a stronger ability to remove and resist the pollutant than the submerged plants,and the good treatment effect of domestic wastewater by macrophytes could be obtained in 5 days. The efficiencies of Canna flaccida and Cyperus alternifolius were better than the Typha latifolia and Juncu effuses because they had a longer growing period during the course of test and a developed root system.Egeria had the best effect of depurating wastewater in submerged plants.The macrophytes had different ability to depurate wastewater in different seasons.The efficiency in winter was lower than that in summer and autumn.For the performance of removal nitrogen and phosphorus by the submerged plants the effect of season was notable.