抚顺社河湿地植物对富营养化水体的修复效果研究

以抚顺社河湿地4种常见水生植物为研究对象,利用小型模拟人工湿地系统,研究不同湿地植被对富营养化水体的修复能力,其结果表明:4种湿地植物都能较好的去除富营养化水体中的总磷含量,试验组的去除率都显著高于对照组(p<0.01),且随着时间的延长,去除率逐渐增大,最后趋于稳定。4种湿地植物对总氮含量的去除率依次为:芦苇(68%)>扁秆藨草(65%)>香蒲(62%)>针蔺(60%)>CK。对氨氮的去除率依次为:芦苇>扁秆藨草>香蒲>针蔺>CK,试验组均能较好的去除氨氮含量,其中芦苇的效果最佳。扁秆藨草对化学需氧量的去除率最高,为77.64%,其次为:芦苇>香蒲>针蔺>CK,扁秆藨草对化学需氧量的去除极显著优于对照组(p<0.01)。

Remediation Function of Wetland Plants to Water Eutrophication of Shehe River Wetland in Fushun

In this paper, four common aquatic plants of Shehe River wetland in Fushun were studied and the restoration capacity of different wetland vegetation to eutrophic water was studied by using a small simulated constructed wetland system. The results showed that four wetland plants could remove the total phosphorus content in eutrophic water better. The removal rate increased gradually with time and finally tended to be stable. The removal rate of the experimental group was significantly higher than that of the control group (p<0.01). The removal rates of total nitrogen content by four wetland plants were as follows Phragmites australis > Scirpus planiculmis > Typha orientalis > Eleocharis congesta and the removal rates was 68%, 65%, 62%, 60%. The removal rates of four wetland plants were higher than those of the control group. The removal rates of ammonia nitrogen were Phragmites australis > Typha orientalis> Eleocharis congesta. Four wetland plants could remove ammonia nitrogen better, and Phragmites australis had the best effect. The removal rates of COD by four wetland plants were as follows Scirpus planiculmis> Phragmites australis > Typha orientalis > Eleocharis congesta and which of Scirpus planiculmis was 77.64%. The removal rates of COD by Scirpus planiculmis was significantly better than that of control group (p<0.01).