花叶芦竹潜流人工湿地处理生活污水的研究

Treatment of Domestic Sewage by Subsurface-flow Constructed Wetland with Arundo Donax Var.Versicolor

采用花叶芦竹潜流人工湿地处理模拟生活污水,当HRT为5 d时,其对生活污水中NH4+-N、TN和TP的去除率分别为93%、88%和98%,空白湿地对生活污水中NH4+-N、TN和TP的去除率则分别为86%、66%和93%;花叶芦竹不同器官的含氮量分布为叶>根>茎,含磷量则为叶>茎>根;植物的吸收作用去除的氮、磷分别占氮、磷总去除量的5%和10%。

The subsurface-flow constructed wetland with Arundo donax var. versicolor was used to treat the simulated domestic sewage. When HRT is 5 d, the removal rates of NH4^＋ - N, TN and TP are 93%, 88% and 98% respectively, while their removal rates are 86%, 66% and 93% respectively in the subsurface-flow constructed wetland without Arundo donax var. versicolor. The nitrogen contents in different organs of Arundo donax var. versicolor are different, its distribution is leaf 〉 root 〉 stem, while the distribution of phosphorus is leaf 〉 stem 〉 root. The plant absorption accounts for 5% and 10% of the total removal of nitrogen and phosphorus.